EmFit¶
Overview¶
EmFit is a Python-based emission-line fitting code for fitting H𝛽, [OIII]4959,5007, [NII]6548,6583, H𝛼, and [SII]6716,6731 emission lines in low-redshift (z ≤ 0.45) sources.
It includes testing for extra components for [OIII], [SII], and Halpha. The code is available here. Refer to Notes below when using the catalog.
If you use this catalog and/or the EmFit code, please cite Pucha et al. (2025) and Pucha et al. (in preparation).
Data Access¶
Data URL: https://data.desi.lbl.gov/public/dr1/vac/dr1/emfit
NERSC access:
/global/cfs/cdirs/desi/public/dr1/vac/dr1/emfit
Documentation¶
Files¶
emfit-dr1-v2.3.fits: Emission-Line flux and width measurements for low-redshift (z <= 0.45) sources in DR1
Data Model¶
EXTNAME = EMFIT
| Column Name | Type | Units | Description |
|---|---|---|---|
| TARGETID | int64 | - | Unique identifier of the DESI target |
| SPECPROD | bytes9 | - | Spectral Production Pipeline fuji |
| SURVEY | bytes4 | - | DESI Survey of the spectra main or special or sv1 or sv2 or sv3 or cmx |
| PROGRAM | bytes6 | - | Observing Program dark or bright or backup or other |
| HEALPIX | int32 | - | Healpix number of the target |
| Z | float64 | - | Redshift of the target |
| PROB_BROAD | float64 | - | Percentage of broad Ha detection in iterations |
| HB_N_AMPLITUDE | float64 | 1e-17 erg/(Angstrom cm2 s) | Amplitude of the Narrow Hb component |
| HB_N_AMPLITUDE_ERR | float64 | 1e-17 erg/(Angstrom cm2 s) | Uncertainty in Amplitude of the Narrow Hb component |
| HB_N_MEAN | float64 | Angstrom | Mean of the Narrow Hb component |
| HB_N_MEAN_ERR | float64 | Angstrom | Uncertainty in Mean of the Narrow Hb component |
| HB_N_STD | float64 | Angstrom | Standard Deviation of the Narrow Hb component |
| HB_N_STD_ERR | float64 | Angstrom | Uncertainty in Standard Deviation of the Narrow Hb component |
| HB_N_FLUX | float64 | 1e-17 erg/(cm2 s) | Flux from the Narrow Hb component |
| HB_N_FLUX_ERR | float64 | 1e-17 erg/(cm2 s) | Uncertainty in Flux from the Narrow Hb component |
| HB_N_FLUX_LERR | float64 | 1e-17 erg/(cm2 s) | 16th percentile Flux from the Narrow Hb component |
| HB_N_FLUX_UERR | float64 | 1e-17 erg/(cm2 s) | 84th percentile Flux from the Narrow Hb component |
| HB_N_SIGMA | float64 | km/s | Width (in km/s) of the Narrow Hb component |
| HB_N_SIGMA_ERR | float64 | km/s | Uncertainty in the Width of the Narrow Hb component |
| HB_N_SIGMA_LERR | float64 | km/s | 16th percentile width of the Narrow Hb component |
| HB_N_SIGMA_UERR | float64 | km/s | 84th percentile width of the Narrow Hb component |
| HB_N_SIGMA_FLAG | int64 | - | Flag regarding instrumental resolution correction for Narrow Hb |
| HB_OUT_AMPLITUDE | float64 | 1e-17 erg/(Angstrom cm2 s) | Amplitude of the Outflow Hb component |
| HB_OUT_AMPLITUDE_ERR | float64 | 1e-17 erg/(Angstrom cm2 s) | Uncertainty in Amplitude of the Outflow Hb component |
| HB_OUT_MEAN | float64 | Angstrom | Mean of the Outflow Hb component |
| HB_OUT_MEAN_ERR | float64 | Angstrom | Uncertainty in Mean of the Outflow Hb component |
| HB_OUT_STD | float64 | Angstrom | Standard Deviation of the Outflow Hb component |
| HB_OUT_STD_ERR | float64 | Angstrom | Uncertainty in Standard Deviation of the Outflow Hb component |
| HB_OUT_FLUX | float64 | 1e-17 erg/(cm2 s) | Flux from the Outflow Hb component |
| HB_OUT_FLUX_ERR | float64 | 1e-17 erg/(cm2 s) | Uncertainty in Flux from the Outflow Hb component |
| HB_OUT_FLUX_LERR | float64 | 1e-17 erg/(cm2 s) | 16th percentile Flux from the Outflow Hb component |
| HB_OUT_FLUX_UERR | float64 | 1e-17 erg/(cm2 s) | 84th percentile Flux from the Outflow Hb component |
| HB_OUT_SIGMA | float64 | km/s | Width (in km/s) of the Outflow Hb component |
| HB_OUT_SIGMA_ERR | float64 | km/s | Uncertainty in the Width of the Outflow Hb component |
| HB_OUT_SIGMA_LERR | float64 | km/s | 16th percentile width of the Outflow Hb component |
| HB_OUT_SIGMA_UERR | float64 | km/s | 84th percentile width of the Outflow Hb component |
| HB_OUT_SIGMA_FLAG | int64 | - | Flag regarding instrumental resolution correction for Outflow Hb |
| HB_B_AMPLITUDE | float64 | 1e-17 erg/(Angstrom cm2 s) | Amplitude of the Broad Hb component |
| HB_B_AMPLITUDE_ERR | float64 | 1e-17 erg/(Angstrom cm2 s) | Uncertainty in Amplitude of the Broad Hb component |
| HB_B_MEAN | float64 | Angstrom | Mean of the Broad Hb component |
| HB_B_MEAN_ERR | float64 | Angstrom | Uncertainty in Mean of the Broad Hb component |
| HB_B_STD | float64 | Angstrom | Standard Deviation of the Broad Hb component |
| HB_B_STD_ERR | float64 | Angstrom | Uncertainty in Standard Deviation of the Broad Hb component |
| HB_B_FLUX | float64 | 1e-17 erg/(cm2 s) | Flux from the Broad Hb component |
| HB_B_FLUX_ERR | float64 | 1e-17 erg/(cm2 s) | Uncertainty in Flux from the Broad Hb component |
| HB_B_FLUX_LERR | float64 | 1e-17 erg/(cm2 s) | 16th percentile Flux from the Broad Hb component |
| HB_B_FLUX_UERR | float64 | 1e-17 erg/(cm2 s) | 84th percentile Flux from the Broad Hb component |
| HB_B_SIGMA | float64 | km/s | Width (in km/s) of the Broad Hb component |
| HB_B_SIGMA_ERR | float64 | km/s | Uncertainty in the Width of the Broad Hb component |
| HB_B_SIGMA_LERR | float64 | km/s | 16th percentile width of the Broad Hb component |
| HB_B_SIGMA_UERR | float64 | km/s | 84th percentile width of the Broad Hb component |
| HB_B_SIGMA_FLAG | int64 | - | Flag regarding instrumental resolution correction for Broad Hb |
| HB_CONTINUUM | float64 | 1e-17 erg/(Angstrom cm2 s) | Continuum around the Hb components |
| HB_CONTINUUM_ERR | float64 | 1e-17 erg/(Angstrom cm2 s) | Uncertainty in Continuum around the Hb components |
| HB_NOISE | float64 | 1e-17 erg/(Angstrom cm2 s) | rms of the Continuum around the Hb components |
| HB_NDOF | int64 | - | Number of Degrees of Freedom associated with the Hb Fit |
| HB_RCHI2 | float64 | - | Reduced chi2 associated with the Hb+[OIII]4959,5007 Fit |
| OIII4959_AMPLITUDE | float64 | 1e-17 erg/(Angstrom cm2 s) | Amplitude of the Narrow [OIII]4959 component |
| OIII4959_AMPLITUDE_ERR | float64 | 1e-17 erg/(Angstrom cm2 s) | Uncertainty in Amplitude of the Narrow [OIII]4959 component |
| OIII4959_MEAN | float64 | Angstrom | Mean of the Narrow [OIII]4959 component |
| OIII4959_MEAN_ERR | float64 | Angstrom | Uncertainty in Mean of the Narrow [OIII]4959 component |
| OIII4959_STD | float64 | Angstrom | Standard Deviation of the Narrow [OIII]4959 component |
| OIII4959_STD_ERR | float64 | Angstrom | Uncertainty in Standard Deviation of the Narrow [OIII]4959 component |
| OIII4959_FLUX | float64 | 1e-17 erg/(cm2 s) | Flux from the Narrow [OIII]4959 component |
| OIII4959_FLUX_ERR | float64 | 1e-17 erg/(cm2 s) | Uncertainty in Flux from the Narrow [OIII]4959 component |
| OIII4959_FLUX_LERR | float64 | 1e-17 erg/(cm2 s) | 16th percentile Flux from the Narrow [OIII]4959 component |
| OIII4959_FLUX_UERR | float64 | 1e-17 erg/(cm2 s) | 84th percentile Flux from the Narrow [OIII]4959 component |
| OIII4959_SIGMA | float64 | km/s | Width (in km/s) of the Narrow [OIII]4959 component |
| OIII4959_SIGMA_ERR | float64 | km/s | Uncertainty in the Width of the Narrow [OIII]4959 component |
| OIII4959_SIGMA_LERR | float64 | km/s | 16th percentile width of the Narrow [OIII]4959 component |
| OIII4959_SIGMA_UERR | float64 | km/s | 84th percentile width of the Narrow [OIII]4959 component |
| OIII4959_SIGMA_FLAG | int64 | - | Flag regarding instrumental resolution correction for Narrow [OIII]4959 |
| OIII4959_OUT_AMPLITUDE | float64 | 1e-17 erg/(Angstrom cm2 s) | Amplitude of the Outflow [OIII]4959 component |
| OIII4959_OUT_AMPLITUDE_ERR | float64 | 1e-17 erg/(Angstrom cm2 s) | Uncertainty in Amplitude of the Outflow [OIII]4959 component |
| OIII4959_OUT_MEAN | float64 | Angstrom | Mean of the Outflow [OIII]4959 component |
| OIII4959_OUT_MEAN_ERR | float64 | Angstrom | Uncertainty in Mean of the Outflow [OIII]4959 component |
| OIII4959_OUT_STD | float64 | Angstrom | Standard Deviation of the Outflow [OIII]4959 component |
| OIII4959_OUT_STD_ERR | float64 | Angstrom | Uncertainty in Standard Deviation of the Outflow [OIII]4959 component |
| OIII4959_OUT_FLUX | float64 | 1e-17 erg/(cm2 s) | Flux from the Outflow [OIII]4959 component |
| OIII4959_OUT_FLUX_ERR | float64 | 1e-17 erg/(cm2 s) | Uncertainty in Flux from the Outflow [OIII]4959 component |
| OIII4959_OUT_FLUX_LERR | float64 | 1e-17 erg/(cm2 s) | 16th percentile Flux from the Outflow [OIII]4959 component |
| OIII4959_OUT_FLUX_UERR | float64 | 1e-17 erg/(cm2 s) | 84th percentile Flux from the Outflow [OIII]4959 component |
| OIII4959_OUT_SIGMA | float64 | km/s | Width (in km/s) of the Outflow [OIII]4959 component |
| OIII4959_OUT_SIGMA_ERR | float64 | km/s | Uncertainty in the Width of the Outflow [OIII]4959 component |
| OIII4959_OUT_SIGMA_LERR | float64 | km/s | 16th percentile width of the Outflow [OIII]4959 component |
| OIII4959_OUT_SIGMA_UERR | float64 | km/s | 84th percentile width of the Outflow [OIII]4959 component |
| OIII4959_OUT_SIGMA_FLAG | int64 | - | Flag regarding instrumental resolution correction for Outflow [OIII]4959 |
| OIII5007_AMPLITUDE | float64 | 1e-17 erg/(Angstrom cm2 s) | Amplitude of the Narrow [OIII]5007 component |
| OIII5007_AMPLITUDE_ERR | float64 | 1e-17 erg/(Angstrom cm2 s) | Uncertainty in Amplitude of the Narrow [OIII]5007 component |
| OIII5007_MEAN | float64 | Angstrom | Mean of the Narrow [OIII]5007 component |
| OIII5007_MEAN_ERR | float64 | Angstrom | Uncertainty in Mean of the Narrow [OIII]5007 component |
| OIII5007_STD | float64 | Angstrom | Standard Deviation of the Narrow [OIII]5007 component |
| OIII5007_STD_ERR | float64 | Angstrom | Uncertainty in Standard Deviation of the Narrow [OIII]5007 component |
| OIII5007_FLUX | float64 | 1e-17 erg/(cm2 s) | Flux from the Narrow [OIII]5007 component |
| OIII5007_FLUX_ERR | float64 | 1e-17 erg/(cm2 s) | Uncertainty in Flux from the Narrow [OIII]5007 component |
| OIII5007_FLUX_LERR | float64 | 1e-17 erg/(cm2 s) | 16th percentile Flux from the Narrow [OIII]5007 component |
| OIII5007_FLUX_UERR | float64 | 1e-17 erg/(cm2 s) | 84th percentile Flux from the Narrow [OIII]5007 component |
| OIII5007_SIGMA | float64 | km/s | Width (in km/s) of the Narrow [OIII]5007 component |
| OIII5007_SIGMA_ERR | float64 | km/s | Uncertainty in the Width of the Narrow [OIII]5007 component |
| OIII5007_SIGMA_LERR | float64 | km/s | 16th percentile width of the Narrow [OIII]5007 component |
| OIII5007_SIGMA_UERR | float64 | km/s | 84th percentile width of the Narrow [OIII]5007 component |
| OIII5007_SIGMA_FLAG | int64 | - | Flag regarding instrumental resolution correction for Narrow [OIII]5007 |
| OIII5007_OUT_AMPLITUDE | float64 | 1e-17 erg/(Angstrom cm2 s) | Amplitude of the Outflow [OIII]5007 component |
| OIII5007_OUT_AMPLITUDE_ERR | float64 | 1e-17 erg/(Angstrom cm2 s) | Uncertainty in Amplitude of the Outflow [OIII]4959 component |
| OIII5007_OUT_MEAN | float64 | Angstrom | Mean of the Outflow [OIII]5007 component |
| OIII5007_OUT_MEAN_ERR | float64 | Angstrom | Uncertainty in Mean of the Outflow [OIII]5007 component |
| OIII5007_OUT_STD | float64 | Angstrom | Standard Deviation of the Outflow [OIII]5007 component |
| OIII5007_OUT_STD_ERR | float64 | Angstrom | Uncertainty in Standard Deviation of the Outflow [OIII]5007 component |
| OIII5007_OUT_FLUX | float64 | 1e-17 erg/(cm2 s) | Flux from the Outflow [OIII]5007 component |
| OIII5007_OUT_FLUX_ERR | float64 | 1e-17 erg/(cm2 s) | Uncertainty in Flux from the Outflow [OIII]5007 component |
| OIII5007_OUT_FLUX_LERR | float64 | 1e-17 erg/(cm2 s) | 16th percentile Flux from the Outflow [OIII]5007 component |
| OIII5007_OUT_FLUX_UERR | float64 | 1e-17 erg/(cm2 s) | 84th percentile Flux from the Outflow [OIII]5007 component |
| OIII5007_OUT_SIGMA | float64 | km/s | Width (in km/s) of the Outflow [OIII]5007 component |
| OIII5007_OUT_SIGMA_ERR | float64 | km/s | Uncertainty in the Width of the Outflow [OIII]5007 component |
| OIII5007_OUT_SIGMA_LERR | float64 | km/s | 16th percentile width of the Outflow [OIII]5007 component |
| OIII5007_OUT_SIGMA_UERR | float64 | km/s | 84th percentile width of the Outflow [OIII]5007 component |
| OIII5007_OUT_SIGMA_FLAG | int64 | - | Flag regarding instrumental resolution correction for Outflow [OIII]5007 |
| OIII_CONTINUUM | float64 | 1e-17 erg/(Angstrom cm2 s) | Continuum around the [OIII] components |
| OIII_CONTINUUM_ERR | float64 | 1e-17 erg/(Angstrom cm2 s) | Uncertainty in Continuum around the [OIII] components |
| OIII_NOISE | float64 | 1e-17 erg/(Angstrom cm2 s) | rms of the Continuum around the [OIII] components |
| OIII_NDOF | int64 | - | Number of Degrees of Freedom associated with the [OIII]4959,5007 Fit |
| OIII_RCHI2 | float64 | - | Reduced chi2 associated with the [OIII]4959,5007 Fit |
| OIII_DBL_FLAG | bool | - | Flag regarding whether the [OIII] emission has double narrow-peak Gaussian components |
| HB_OIII_NDOF | int64 | - | Number of Degrees of Freedom associated with the Hb+[OIII]4959,5007 Fit |
| HB_OIII_RCHI2 | float64 | - | Reduced chi2 associated with the Hb+[OIII]4959,5007 Fit |
| NII6548_AMPLITUDE | float64 | 1e-17 erg/(Angstrom cm2 s) | Amplitude of the Narrow [NII]6548 component |
| NII6548_AMPLITUDE_ERR | float64 | 1e-17 erg/(Angstrom cm2 s) | Uncertainty in Amplitude of the Narrow [NII]6548 component |
| NII6548_MEAN | float64 | Angstrom | Mean of the Narrow [NII]6548 component |
| NII6548_MEAN_ERR | float64 | Angstrom | Uncertainty in Mean of the Narrow [NII]6548 component |
| NII6548_STD | float64 | Angstrom | Standard Deviation of the Narrow [NII]6548 component |
| NII6548_STD_ERR | float64 | Angstrom | Uncertainty in Standard Deviation of the Narrow [NII]6548 component |
| NII6548_FLUX | float64 | 1e-17 erg/(cm2 s) | Flux from the Narrow [NII]6548 component |
| NII6548_FLUX_ERR | float64 | 1e-17 erg/(cm2 s) | Uncertainty in Flux from the Narrow [NII]6548 component |
| NII6548_FLUX_LERR | float64 | 1e-17 erg/(cm2 s) | 16th percentile Flux from the Narrow [NII]6548 component |
| NII6548_FLUX_UERR | float64 | 1e-17 erg/(cm2 s) | 84th percentile Flux from the Narrow [NII]6548 component |
| NII6548_SIGMA | float64 | km/s | Width (in km/s) of the Narrow [NII]6548 component |
| NII6548_SIGMA_ERR | float64 | km/s | Uncertainty in the Width of the Narrow [NII]6548 component |
| NII6548_SIGMA_LERR | float64 | km/s | 16th percentile width of the Narrow [NII]6548 component |
| NII6548_SIGMA_UERR | float64 | km/s | 84th percentile width of the Narrow [NII]6548 component |
| NII6548_SIGMA_FLAG | int64 | - | Flag regarding instrumental resolution correction for Narrow [NII]6548 |
| NII6548_OUT_AMPLITUDE | float64 | 1e-17 erg/(Angstrom cm2 s) | Amplitude of the Outflow [NII]6548 component |
| NII6548_OUT_AMPLITUDE_ERR | float64 | 1e-17 erg/(Angstrom cm2 s) | Uncertainty in Amplitude of the Outflow [NII]6548 component |
| NII6548_OUT_MEAN | float64 | Angstrom | Mean of the Outflow [NII]6548 component |
| NII6548_OUT_MEAN_ERR | float64 | Angstrom | Uncertainty in Mean of the Outflow [NII]6548 component |
| NII6548_OUT_STD | float64 | Angstrom | Standard Deviation of the Outflow [NII]6548 component |
| NII6548_OUT_STD_ERR | float64 | Angstrom | Uncertainty in Standard Deviation of the Outflow [NII]6548 component |
| NII6548_OUT_FLUX | float64 | 1e-17 erg/(cm2 s) | Flux from the Outflow [NII]6548 component |
| NII6548_OUT_FLUX_ERR | float64 | 1e-17 erg/(cm2 s) | Uncertainty in Flux from the Outflow [NII]6548 component |
| NII6548_OUT_FLUX_LERR | float64 | 1e-17 erg/(cm2 s) | 16th percentile Flux from the Outflow [NII]6548 component |
| NII6548_OUT_FLUX_UERR | float64 | 1e-17 erg/(cm2 s) | 84th percentile Flux from the Outflow [NII]6548 component |
| NII6548_OUT_SIGMA | float64 | km/s | Width (in km/s) of the Outflow [NII]6548 component |
| NII6548_OUT_SIGMA_ERR | float64 | km/s | Uncertainty in the Width of the Outflow [NII]6548 component |
| NII6548_OUT_SIGMA_LERR | float64 | km/s | 16th percentile width of the Outflow [NII]6548 component |
| NII6548_OUT_SIGMA_UERR | float64 | km/s | 84th percentile width of the Outflow [NII]6548 component |
| NII6548_OUT_SIGMA_FLAG | int64 | - | Flag regarding instrumental resolution correction for Outflow [NII]6548 |
| NII6583_AMPLITUDE | float64 | 1e-17 erg/(Angstrom cm2 s) | Amplitude of the Narrow [NII]6583 component |
| NII6583_AMPLITUDE_ERR | float64 | 1e-17 erg/(Angstrom cm2 s) | Uncertainty in Amplitude of the Narrow [NII]6583 component |
| NII6583_MEAN | float64 | Angstrom | Mean of the Narrow [NII]6583 component |
| NII6583_MEAN_ERR | float64 | Angstrom | Uncertainty in Mean of the Narrow [NII]6583 component |
| NII6583_STD | float64 | Angstrom | Standard Deviation of the Narrow [NII]6583 component |
| NII6583_STD_ERR | float64 | Angstrom | Uncertainty in Standard Deviation of the Narrow [NII]6583 component |
| NII6583_FLUX | float64 | 1e-17 erg/(cm2 s) | Flux from the Narrow [NII]6583 component |
| NII6583_FLUX_ERR | float64 | 1e-17 erg/(cm2 s) | Uncertainty in Flux from the Narrow [NII]6583 component |
| NII6583_FLUX_LERR | float64 | 1e-17 erg/(cm2 s) | 16th percentile Flux from the Narrow [NII]6583 component |
| NII6583_FLUX_UERR | float64 | 1e-17 erg/(cm2 s) | 84th percentile Flux from the Narrow [NII]6583 component |
| NII6583_SIGMA | float64 | km/s | Width (in km/s) of the Narrow [NII]6583 component |
| NII6583_SIGMA_ERR | float64 | km/s | Uncertainty in the Width of the Narrow [NII]6583 component |
| NII6583_SIGMA_LERR | float64 | km/s | 16th percentile width of the Narrow [NII]6583 component |
| NII6583_SIGMA_UERR | float64 | km/s | 84th percentile width of the Narrow [NII]6583 component |
| NII6583_SIGMA_FLAG | int64 | - | Flag regarding instrumental resolution correction for Narrow [NII]6583 |
| NII6583_OUT_AMPLITUDE | float64 | 1e-17 erg/(Angstrom cm2 s) | Amplitude of the Outflow [NII]6583 component |
| NII6583_OUT_AMPLITUDE_ERR | float64 | 1e-17 erg/(Angstrom cm2 s) | Uncertainty in Amplitude of the Outflow [NII]6583 component |
| NII6583_OUT_MEAN | float64 | Angstrom | Mean of the Outflow [NII]6583 component |
| NII6583_OUT_MEAN_ERR | float64 | Angstrom | Uncertainty in Mean of the Outflow [NII]6583 component |
| NII6583_OUT_STD | float64 | Angstrom | Standard Deviation of the Outflow [NII]6583 component |
| NII6583_OUT_STD_ERR | float64 | Angstrom | Uncertainty in Standard Deviation of the Outflow [NII]6583 component |
| NII6583_OUT_FLUX | float64 | 1e-17 erg/(cm2 s) | Flux from the Outflow [NII]6583 component |
| NII6583_OUT_FLUX_ERR | float64 | 1e-17 erg/(cm2 s) | Uncertainty in Flux from the Outflow [NII]6583 component |
| NII6583_OUT_FLUX_LERR | float64 | 1e-17 erg/(cm2 s) | 16th percentile Flux from the Outflow [NII]6583 component |
| NII6583_OUT_FLUX_UERR | float64 | 1e-17 erg/(cm2 s) | 84th percentile Flux from the Outflow [NII]6583 component |
| NII6583_OUT_SIGMA | float64 | km/s | Width (in km/s) of the Outflow [NII]6583 component |
| NII6583_OUT_SIGMA_ERR | float64 | km/s | Uncertainty in the Width of the Outflow [NII]6583 component |
| NII6583_OUT_SIGMA_LERR | float64 | km/s | 16th percentile width of the Outflow [NII]6583 component |
| NII6583_OUT_SIGMA_UERR | float64 | km/s | 84th percentile width of the Outflow [NII]6583 component |
| NII6583_OUT_SIGMA_FLAG | int64 | - | Flag regarding instrumental resolution correction for Outflow [NII]6583 |
| HA_N_AMPLITUDE | float64 | 1e-17 erg/(Angstrom cm2 s) | Amplitude of the Narrow Ha component |
| HA_N_AMPLITUDE_ERR | float64 | 1e-17 erg/(Angstrom cm2 s) | Uncertainty in Amplitude of the Narrow Ha component |
| HA_N_MEAN | float64 | Angstrom | Mean of the Narrow Ha component |
| HA_N_MEAN_ERR | float64 | Angstrom | Uncertainty in Mean of the Narrow Ha component |
| HA_N_STD | float64 | Angstrom | Standard Deviation of the Narrow Ha component |
| HA_N_STD_ERR | float64 | Angstrom | Uncertainty in Standard Deviation of the Narrow Ha component |
| HA_N_FLUX | float64 | 1e-17 erg/(cm2 s) | Flux from the Narrow Ha component |
| HA_N_FLUX_ERR | float64 | 1e-17 erg/(cm2 s) | Uncertainty in Flux from the Narrow Ha component |
| HA_N_FLUX_LERR | float64 | 1e-17 erg/(cm2 s) | 16th percentile Flux from the Narrow Ha component |
| HA_N_FLUX_UERR | float64 | 1e-17 erg/(cm2 s) | 84th percentile Flux from the Narrow Ha component |
| HA_N_SIGMA | float64 | km/s | Width (in km/s) of the Narrow Ha component |
| HA_N_SIGMA_ERR | float64 | km/s | Uncertainty in the Width of the Narrow Ha component |
| HA_N_SIGMA_LERR | float64 | km/s | 16th percentile width of the Narrow Ha component |
| HA_N_SIGMA_UERR | float64 | km/s | 84th percentile width of the Narrow Ha component |
| HA_N_SIGMA_FLAG | int64 | - | Flag regarding instrumental resolution correction for Narrow Ha |
| HA_OUT_AMPLITUDE | float64 | 1e-17 erg/(Angstrom cm2 s) | Amplitude of the Outflow Ha component |
| HA_OUT_AMPLITUDE_ERR | float64 | 1e-17 erg/(Angstrom cm2 s) | Uncertainty in Amplitude of the Outflow Ha component |
| HA_OUT_MEAN | float64 | Angstrom | Mean of the Outflow Ha component |
| HA_OUT_MEAN_ERR | float64 | Angstrom | Uncertainty in Mean of the Outflow Ha component |
| HA_OUT_STD | float64 | Angstrom | Standard Deviation of the Outflow Ha component |
| HA_OUT_STD_ERR | float64 | Angstrom | Uncertainty in Standard Deviation of the Outflow Ha component |
| HA_OUT_FLUX | float64 | 1e-17 erg/(cm2 s) | Flux from the Outflow Ha component |
| HA_OUT_FLUX_ERR | float64 | 1e-17 erg/(cm2 s) | Uncertainty in Flux from the Outflow Ha component |
| HA_OUT_FLUX_LERR | float64 | 1e-17 erg/(cm2 s) | 16th percentile Flux from the Outflow Ha component |
| HA_OUT_FLUX_UERR | float64 | 1e-17 erg/(cm2 s) | 84th percentile Flux from the Outflow Ha component |
| HA_OUT_SIGMA | float64 | km/s | Width (in km/s) of the Outflow Ha component |
| HA_OUT_SIGMA_ERR | float64 | km/s | Uncertainty in the Width of the Outflow Ha component |
| HA_OUT_SIGMA_LERR | float64 | km/s | 16th percentile width of the Outflow Ha component |
| HA_OUT_SIGMA_UERR | float64 | km/s | 84th percentile width of the Outflow Ha component |
| HA_OUT_SIGMA_FLAG | int64 | - | Flag regarding instrumental resolution correction for Outflow Ha |
| HA_B_AMPLITUDE | float64 | 1e-17 erg/(Angstrom cm2 s) | Amplitude of the Broad Ha component |
| HA_B_AMPLITUDE_ERR | float64 | 1e-17 erg/(Angstrom cm2 s) | Uncertainty in Amplitude of the Broad Ha component |
| HA_B_MEAN | float64 | Angstrom | Mean of the Broad Ha component |
| HA_B_MEAN_ERR | float64 | Angstrom | Uncertainty in Mean of the Broad Ha component |
| HA_B_STD | float64 | Angstrom | Standard Deviation of the Broad Ha component |
| HA_B_STD_ERR | float64 | Angstrom | Uncertainty in Standard Deviation of the Broad Ha component |
| HA_B_FLUX | float64 | 1e-17 erg/(cm2 s) | Flux from the Broad Ha component |
| HA_B_FLUX_ERR | float64 | 1e-17 erg/(cm2 s) | Uncertainty in Flux from the Broad Ha component |
| HA_B_FLUX_LERR | float64 | 1e-17 erg/(cm2 s) | 16th percentile Flux from the Broad Ha component |
| HA_B_FLUX_UERR | float64 | 1e-17 erg/(cm2 s) | 84th percentile Flux from the Broad Ha component |
| HA_B_SIGMA | float64 | km/s | Width (in km/s) of the Broad Ha component |
| HA_B_SIGMA_ERR | float64 | km/s | Uncertainty in the Width of the Broad Ha component |
| HA_B_SIGMA_LERR | float64 | km/s | 16th percentile width of the Broad Ha component |
| HA_B_SIGMA_UERR | float64 | km/s | 84th percentile width of the Broad Ha component |
| HA_B_SIGMA_FLAG | int64 | - | Flag regarding instrumental resolution correction for Broad Ha |
| NII_HA_CONTINUUM | float64 | 1e-17 erg/(Angstrom cm2 s) | Continuum around the [NII]+Ha components |
| NII_HA_CONTINUUM_ERR | float64 | 1e-17 erg/(Angstrom cm2 s) | Uncertainty in Continuum around the [NII]+Ha components |
| NII_HA_NOISE | float64 | 1e-17 erg/(Angstrom cm2 s) | rms of the Continuum around the [NII]+Ha components |
| NII_HA_NDOF | int64 | - | Number of Degrees of Freedom associated with the [NII]6548,6583+Ha Fit |
| NII_HA_RCHI2 | float64 | - | Reduced chi2 associated with the [NII]6548,6583+Ha Fit |
| SII6716_AMPLITUDE | float64 | 1e-17 erg/(Angstrom cm2 s) | Amplitude of the Narrow [SII]6716 component |
| SII6716_AMPLITUDE_ERR | float64 | 1e-17 erg/(Angstrom cm2 s) | Uncertainty in Amplitude of the Narrow [SII]6716 component |
| SII6716_MEAN | float64 | Angstrom | Mean of the Narrow [SII]6716 component |
| SII6716_MEAN_ERR | float64 | Angstrom | Uncertainty in Mean of the Narrow [SII]6716 component |
| SII6716_STD | float64 | Angstrom | Standard Deviation of the Narrow [SII]6716 component |
| SII6716_STD_ERR | float64 | Angstrom | Uncertainty in Standard Deviation of the Narrow [SII]6716 component |
| SII6716_FLUX | float64 | 1e-17 erg/(cm2 s) | Flux from the Narrow [SII]6716 component |
| SII6716_FLUX_ERR | float64 | 1e-17 erg/(cm2 s) | Uncertainty in Flux from the Narrow [SII]6716 component |
| SII6716_FLUX_LERR | float64 | 1e-17 erg/(cm2 s) | 16th percentile Flux from the Narrow [SII]6716 component |
| SII6716_FLUX_UERR | float64 | 1e-17 erg/(cm2 s) | 84th percentile Flux from the Narrow [SII]6716 component |
| SII6716_SIGMA | float64 | km/s | Width (in km/s) of the Narrow [SII]6716 component |
| SII6716_SIGMA_ERR | float64 | km/s | Uncertainty in the Width of the Narrow [SII]6716 component |
| SII6716_SIGMA_LERR | float64 | km/s | 16th percentile width of the Narrow [SII]6716 component |
| SII6716_SIGMA_UERR | float64 | km/s | 84th percentile width of the Narrow [SII]6716 component |
| SII6716_SIGMA_FLAG | int64 | - | Flag regarding instrumental resolution correction for Narrow [SII]6716 |
| SII6716_OUT_AMPLITUDE | float64 | 1e-17 erg/(Angstrom cm2 s) | Amplitude of the Outflow [SII]6716 component |
| SII6716_OUT_AMPLITUDE_ERR | float64 | 1e-17 erg/(Angstrom cm2 s) | Uncertainty in Amplitude of the Outflow [SII]6716 component |
| SII6716_OUT_MEAN | float64 | Angstrom | Mean of the Outflow [SII]6716 component |
| SII6716_OUT_MEAN_ERR | float64 | Angstrom | Uncertainty in Mean of the Outflow [SII]6716 component |
| SII6716_OUT_STD | float64 | Angstrom | Standard Deviation of the Outflow [SII]6716 component |
| SII6716_OUT_STD_ERR | float64 | Angstrom | Uncertainty in Standard Deviation of the Outflow [SII]6716 component |
| SII6716_OUT_FLUX | float64 | 1e-17 erg/(cm2 s) | Flux from the Outflow [SII]6716 component |
| SII6716_OUT_FLUX_ERR | float64 | 1e-17 erg/(cm2 s) | Uncertainty in Flux from the Outflow [SII]6716 component |
| SII6716_OUT_FLUX_LERR | float64 | 1e-17 erg/(cm2 s) | 16th percentile Flux from the Outflow [SII]6716 component |
| SII6716_OUT_FLUX_UERR | float64 | 1e-17 erg/(cm2 s) | 84th percentile Flux from the Outflow [SII]6716 component |
| SII6716_OUT_SIGMA | float64 | km/s | Width (in km/s) of the Outflow [SII]6716 component |
| SII6716_OUT_SIGMA_ERR | float64 | km/s | Uncertainty in the Width of the Outflow [SII]6716 component |
| SII6716_OUT_SIGMA_LERR | float64 | km/s | 16th percentile width of the Outflow [SII]6716 component |
| SII6716_OUT_SIGMA_UERR | float64 | km/s | 84th percentile width of the Outflow [SII]6716 component |
| SII6716_OUT_SIGMA_FLAG | int64 | - | Flag regarding instrumental resolution correction for Outflow [SII]6716 |
| SII6731_AMPLITUDE | float64 | 1e-17 erg/(Angstrom cm2 s) | Amplitude of the Narrow [SII]6731 component |
| SII6731_AMPLITUDE_ERR | float64 | 1e-17 erg/(Angstrom cm2 s) | Uncertainty in Amplitude of the Narrow [SII]6731 component |
| SII6731_MEAN | float64 | Angstrom | Mean of the Narrow [SII]6731 component |
| SII6731_MEAN_ERR | float64 | Angstrom | Uncertainty in Mean of the Narrow [SII]6731 component |
| SII6731_STD | float64 | Angstrom | Standard Deviation of the Narrow [SII]6731 component |
| SII6731_STD_ERR | float64 | Angstrom | Uncertainty in Standard Deviation of the Narrow [SII]6731 component |
| SII6731_FLUX | float64 | 1e-17 erg/(cm2 s) | Flux from the Narrow [SII]6731 component |
| SII6731_FLUX_ERR | float64 | 1e-17 erg/(cm2 s) | Uncertainty in Flux from the Narrow [SII]6731 component |
| SII6731_FLUX_LERR | float64 | 1e-17 erg/(cm2 s) | 16th percentile Flux from the Narrow [SII]6731 component |
| SII6731_FLUX_UERR | float64 | 1e-17 erg/(cm2 s) | 84th percentile Flux from the Narrow [SII]6731 component |
| SII6731_SIGMA | float64 | km/s | Width (in km/s) of the Narrow [SII]6731 component |
| SII6731_SIGMA_ERR | float64 | km/s | Uncertainty in the Width of the Narrow [SII]6731 component |
| SII6731_SIGMA_LERR | float64 | km/s | 16th percentile width of the Narrow [SII]6731 component |
| SII6731_SIGMA_UERR | float64 | km/s | 84th percentile width of the Narrow [SII]6731 component |
| SII6731_SIGMA_FLAG | int64 | - | Flag regarding instrumental resolution correction for Narrow [SII]6731 |
| SII6731_OUT_AMPLITUDE | float64 | 1e-17 erg/(Angstrom cm2 s) | Amplitude of the Outflow [SII]6731 component |
| SII6731_OUT_AMPLITUDE_ERR | float64 | 1e-17 erg/(Angstrom cm2 s) | Uncertainty in Amplitude of the Outflow [SII]6731 component |
| SII6731_OUT_MEAN | float64 | Angstrom | Mean of the Outflow [SII]6731 component |
| SII6731_OUT_MEAN_ERR | float64 | Angstrom | Uncertainty in Mean of the Outflow [SII]6731 component |
| SII6731_OUT_STD | float64 | Angstrom | Standard Deviation of the Outflow [SII]6731 component |
| SII6731_OUT_STD_ERR | float64 | Angstrom | Uncertainty in Standard Deviation of the Outflow [SII]6731 component |
| SII6731_OUT_FLUX | float64 | 1e-17 erg/(cm2 s) | Flux from the Outflow [SII]6731 component |
| SII6731_OUT_FLUX_ERR | float64 | 1e-17 erg/(cm2 s) | Uncertainty in Flux from the Outflow [SII]6731 component |
| SII6731_OUT_FLUX_LERR | float64 | 1e-17 erg/(cm2 s) | 16th percentile Flux from the Outflow [SII]6731 component |
| SII6731_OUT_FLUX_UERR | float64 | 1e-17 erg/(cm2 s) | 84th percentile Flux from the Outflow [SII]6731 component |
| SII6731_OUT_SIGMA | float64 | km/s | Width (in km/s) of the Outflow [SII]6731 component |
| SII6731_OUT_SIGMA_ERR | float64 | km/s | Uncertainty in the Width of the Outflow [SII]6731 component |
| SII6731_OUT_SIGMA_LERR | float64 | km/s | 16th percentile width of the Outflow [SII]6731 component |
| SII6731_OUT_SIGMA_UERR | float64 | km/s | 84th percentile width of the Outflow [SII]6731 component |
| SII6731_OUT_SIGMA_FLAG | int64 | - | Flag regarding instrumental resolution correction for Outflow [SII]6731 |
| SII_CONTINUUM | float64 | 1e-17 erg/(Angstrom cm2 s) | Continuum around the [SII] components |
| SII_CONTINUUM_ERR | float64 | 1e-17 erg/(Angstrom cm2 s) | Uncertainty in Continuum around the [SII] components |
| SII_NOISE | float64 | 1e-17 erg/(Angstrom cm2 s) | rms of the Continuum around the [SII] components |
| SII_NDOF | int64 | - | Number of Degrees of Freedom associated with the [SII]6716,6731 Fit |
| SII_RCHI2 | float64 | - | Reduced chi2 associated with the [SII]6717,6731 Fit |
| SII_DBL_FLAG | bool | - | Flag regarding whether the [SII] (and therefore [NII], HA, and HB) emission has double narrow-peak Gaussian components |
| NII_HA_SII_NDOF | int64 | - | Number of Degrees of Freedom associated with the [NII]6548,6583 + Ha + [SII]6717,6731 Fit |
| NII_HA_SII_RCHI2 | float64 | - | Reduced chi2 associated with the [NII]6548,6583+Ha+[SII]6717,6731 Fit |
Notes¶
The catalog contains the fit parameters associated with Hb, [OIII]4959,5007, [NII]6548,6583, Ha, and [SII]6716,6731 emission lines. Please read about the following columns before using the catalog:
-
There are two different modes of fitting in EmFit:
defaultmode and the extreme broad-line (EBL) mode. This depends on the width of the broad Ha component.defaultmode fits haveHB_OIII_NDOF,HB_OIII_RCHI2,NII_HA_SII_NDOF, andNII_HA_SII_RCHI2set to zero.EBLmode fits haveHB_NDOF,HB_RCHI2,OIII_NDOF,OIII_RCHI2,NII_HA_NDOF,NII_HA_RCHI2,SII_NDOF, andSII_RCHI2set to zero.
-
The estimated width values are corrected for the instrumental resolution using an approximated resolution element for each emission line window. The output
SIGMAvalues after correction are associated with the*_SIGMA_FLAGcolumns as follows:- FLAG = -1: The component is not detected.
- FLAG = 0: The component is resolved. The
SIGMAvalue is equal to the estimated width value corrected for instrumental resolution in quadrature. - FLAG = 1: The component is not resolved. The
SIGMAvalue is just set to the estimated width value.
-
There are two double-peak flags:
OIII_DBL_FLAGandSII_DBL_FLAG. If this flag is True, the “narrow” and “outflow” component fluxes should be added for the total flux.- For
OIII_DBL_FLAG= True: OIII_FLUX =OIII5007_FLUX+OIII5007_OUT_FLUX. - For
SII_DBL_FLAG= True: The flux components for [SII], [NII], HA, and HB should be added.
- For
More information is available in the Appendix sections of Pucha et al. (2025) and Pucha et al. (in preparation).
Contact¶
Contact Ragadeepika Pucha for questions about this catalog.
Change Log¶
v2.3¶
- Based on
EmFittag v2.3.0 - Fixed a bug related to the input error spectrum, where the
ivararray is now corrected for MW dust extinction. - Improved emission-line measurements and uncertainties.
- Removed the rows corresponding to bad fits, with cuts specified in Pucha et al. (2025).
- Added the columns corresponding to
*_DBL_FLAGthat checks whether a given narrow emission line has two narrow Gaussian peaks in the fit. - Version: 2025 October 3
v2.2¶
Initial catalog - based on EmFit tag v2.2.0