emlin_catalog

Summary:

Concatenation of all of the dark time emission line file outputs

Naming Convention:

emlin_catalog.fits

Regex:

emlin_catalog\.fits

File Type:

FITS, 3 GB

Contents

Number	EXTNAME	Type	Contents
HDU0		IMAGE	Empty
HDU1	LSS	BINTABLE	Catalog data

FITS Header Units

HDU0

This HDU has no non-standard required keywords.

Empty HDU.

HDU1

EXTNAME = EMLIN

Concatenation of all of the dark time tile-based emission line file outputs (CROSS-REF)

Required Header Keywords

Required Header Keywords Table

KEY	Example Value	Type	Comment
NAXIS1	312	int	width of table in bytes
NAXIS2	11632889	int	number of rows in table
DESIDR	dr1	str	DESI Data Release

Required Data Table Columns

Name	Type	Units	Description
TARGETID	int64		Unique DESI target ID
OII_FLUX	float32	10**-17 erg/(s cm2)	Fitted flux for the [OII] doublet
OII_FLUX_IVAR	float32	10**+34 (s2 cm4) / erg2	Inverse variance of the fitted flux for the [OII] doublet
OII_SIGMA	float32	Angstrom	Fitted line width (in the observed frame) for the [OII] doublet
OII_SIGMA_IVAR	float32	Angstrom^-2	Inverse variance of the fitted line width (in the observed frame) for the [OII] doublet
OII_CONT	float32	10**-17 erg/(s cm2 Angstrom)	Continuum used for the fitting (fixed value) for the [OII] doublet
OII_CONT_IVAR	float32	10**+34 (s2 cm4 Angstrom2) / erg2	Inverse variance of the continuum for the [OII] doublet
OII_SHARE	float32		Fitted F1/(F0+F1) for the [OII] doublet, where F0 and F1 are the individual line fluxes
OII_SHARE_IVAR	float32		Inverse variance of the fitted F1/(F0+F1) for the [OII] doublet
OII_EW	float32	Angstrom	Fitted rest-frame equivalent width for the [OII] doublet
OII_EW_IVAR	float32	Angstrom^-2	Inverse variance of the fitted rest-frame equivalent width for the [OII] doublet
OII_CHI2	float32		Reduced chi2 of the fit for the [OII] doublet
OII_NDOF	int32		Number of degrees of freedom of the fit for the [OII] doublet
HDELTA_FLUX	float32	10**-17 erg/(s cm2)	Fitted flux for the HDELTA line
HDELTA_FLUX_IVAR	float32	10**+34 (s2 cm4) / erg2	Inverse variance of the fitted flux for the HDELTA line
HDELTA_SIGMA	float32	Angstrom	Fitted line width (in the observed frame) for the HDELTA line
HDELTA_SIGMA_IVAR	float32	Angstrom^-2	Inverse variance of the fitted line width (in the observed frame) for the HDELTA line
HDELTA_CONT	float32	10**-17 erg/(s cm2 Angstrom)	Continuum used for the fitting (fixed value) for the HDELTA line
HDELTA_CONT_IVAR	float32	10**+34 (s2 cm4 Angstrom2) / erg2	Inverse variance of the continuum for the HDELTA line
HDELTA_SHARE	float32		NaN (SHARE not relevant for HDELTA line)
HDELTA_SHARE_IVAR	float32		NaN (SHARE not relevant for HDELTA line)
HDELTA_EW	float32	Angstrom	Fitted rest-frame equivalent width for the HDELTA line
HDELTA_EW_IVAR	float32	Angstrom^-2	Inverse variance of the fitted rest-frame equivalent width for the HDELTA line
HDELTA_CHI2	float32		Reduced chi2 of the fit for the HDELTA line
HDELTA_NDOF	int32		Number of degrees of freedom of the fit for the HDELTA line
HGAMMA_FLUX	float32	10**-17 erg/(s cm2)	Fitted flux for the HGAMMA line
HGAMMA_FLUX_IVAR	float32	10**+34 (s2 cm4) / erg2	Inverse variance of the fitted flux for the HGAMMA line
HGAMMA_SIGMA	float32	Angstrom	Fitted line width (in the observed frame) for the HGAMMA line
HGAMMA_SIGMA_IVAR	float32	Angstrom^-2	Inverse variance of the fitted line width (in the observed frame) for the HGAMMA line
HGAMMA_CONT	float32	10**-17 erg/(s cm2 Angstrom)	Continuum used for the fitting (fixed value) for the HGAMMA line
HGAMMA_CONT_IVAR	float32	10**+34 (s2 cm4 Angstrom2) / erg2	Inverse variance of the continuum for the HGAMMA line
HGAMMA_SHARE	float32		NaN (SHARE not relevant for HGAMMA line)
HGAMMA_SHARE_IVAR	float32		NaN (SHARE not relevant for HGAMMA line)
HGAMMA_EW	float32	Angstrom	Fitted rest-frame equivalent width for the HGAMMA line
HGAMMA_EW_IVAR	float32	Angstrom^-2	Inverse variance of the fitted rest-frame equivalent width for the HGAMMA line
HGAMMA_CHI2	float32		Reduced chi2 of the fit for the HGAMMA line
HGAMMA_NDOF	int32		Number of degrees of freedom of the fit for the HGAMMA line
HBETA_FLUX	float32	10**-17 erg/(s cm2)	Fitted flux for the HBETA line
HBETA_FLUX_IVAR	float32	10**+34 (s2 cm4) / erg2	Inverse variance of the fitted flux for the HBETA line
HBETA_SIGMA	float32	Angstrom	Fitted line width (in the observed frame) for the HBETA line
HBETA_SIGMA_IVAR	float32	Angstrom^-2	Inverse variance of the fitted line width (in the observed frame) for the HBETA line
HBETA_CONT	float32	10**-17 erg/(s cm2 Angstrom)	Continuum used for the fitting (fixed value) for the HBETA line
HBETA_CONT_IVAR	float32	10**+34 (s2 cm4 Angstrom2) / erg2	Inverse variance of the continuum for the HBETA line
HBETA_SHARE	float32		NaN (SHARE not relevant for HBETA line)
HBETA_SHARE_IVAR	float32		NaN (SHARE not relevant for HBETA line)
HBETA_EW	float32	Angstrom	Fitted rest-frame equivalent width for the HBETA line
HBETA_EW_IVAR	float32	Angstrom^-2	Inverse variance of the fitted rest-frame equivalent width for the HBETA line
HBETA_CHI2	float32		Reduced chi2 of the fit for the HBETA line
HBETA_NDOF	int32		Number of degrees of freedom of the fit for the HBETA line
OIII_FLUX	float32	10**-17 erg/(s cm2)	Fitted flux for the [OIII] doublet
OIII_FLUX_IVAR	float32	10**+34 (s2 cm4) / erg2	Inverse variance of the fitted flux for the [OIII] doublet
OIII_SIGMA	float32	Angstrom	Fitted line width (in the observed frame) for the [OIII] doublet
OIII_SIGMA_IVAR	float32	Angstrom^-2	Inverse variance of the fitted line width (in the observed frame) for the [OIII] doublet
OIII_CONT	float32	10**-17 erg/(s cm2 Angstrom)	Continuum used for the fitting (fixed value) for the [OIII] doublet
OIII_CONT_IVAR	float32	10**+34 (s2 cm4 Angstrom2) / erg2	Inverse variance of the continuum for the [OIII] doublet
OIII_SHARE	float32		F1/(F0+F1) for the [OIII] doublet, where F0 and F1 are the individual line fluxes (SHARE value fixed during the fit)
OIII_SHARE_IVAR	float32		Infinite value, as SHARE is fixed during the fit
OIII_EW	float32	Angstrom	Fitted rest-frame equivalent width for the [OIII] doublet
OIII_EW_IVAR	float32	Angstrom^-2	Inverse variance of the fitted rest-frame equivalent width for the [OIII] doublet
OIII_CHI2	float32		Reduced chi2 of the fit for the [OIII] doublet
OIII_NDOF	int32		Number of degrees of freedom of the fit for the [OIII] doublet
HALPHA_FLUX	float32	10**-17 erg/(s cm2)	Fitted flux for the HALPHA line
HALPHA_FLUX_IVAR	float32	10**+34 (s2 cm4) / erg2	Inverse variance of the fitted flux for the HALPHA line
HALPHA_SIGMA	float32	Angstrom	Fitted line width (in the observed frame) for the HALPHA line
HALPHA_SIGMA_IVAR	float32	Angstrom^-2	Inverse variance of the fitted line width (in the observed frame) for the HALPHA line
HALPHA_CONT	float32	10**-17 erg/(s cm2 Angstrom)	Continuum used for the fitting (fixed value) for the HALPHA line
HALPHA_CONT_IVAR	float32	10**+34 (s2 cm4 Angstrom2) / erg2	Inverse variance of the continuum for the HALPHA line
HALPHA_SHARE	float32		NaN (SHARE not relevant for HALPHA line)
HALPHA_SHARE_IVAR	float32		NaN (SHARE not relevant for HALPHA line)
HALPHA_EW	float32	Angstrom	Fitted rest-frame equivalent width for the HALPHA line
HALPHA_EW_IVAR	float32	Angstrom^-2	Inverse variance of the fitted rest-frame equivalent width for the HALPHA line
HALPHA_CHI2	float32		Reduced chi2 of the fit for the HALPHA line
HALPHA_NDOF	int32		Number of degrees of freedom of the fit for the HALPHA line
LOCATION	int64		Location on the focal plane PETAL_LOC*1000 + DEVICE_LOC
TILEID	int64		Unique DESI tile ID

Notes and Examples