Data model: portsmouth_emlinekin

General description: This file contains the plate merged output of the Portsmouth Emission Line Kinematics computation of the BOSS galaxy product, according to the algorithm documentation.

Short Version: of this file available portsmouth_emlinekin.

Naming convention: portsmouth_emlinekin_full-RUN2D.fits

Approximate size: 1 Gbytes.

File type: FITS

Read by products: galaxy/portsmouth_emlinekin

Written by products: galaxy/portsmouth_emlinekin

File Contents:

• HDU 0: NULL - Empty
• HDU 1: fields - Binary FITS Table, Object Emission Line Kinematics

FITS Header Keywords (HDU 1):

• AUTHOR: File Authors
• VERSIDL: Version of IDL
• VERSUTIL: Version of idlutils
• VERS2D: Version of idlspec2d for 2D reduction
• VERS1D: Version of idlspec2d for 1D reduction
• VERSGAL: Version of GALAXY product

HDU 1 Binary FITS Table fields:

• PLATE (LONG): Plate number
• MJD (LONG): Modified Julian date of observation
• FIBERID (LONG): Fiber ID (1 to 1000)
• RA (DOUBLE): Object RA (Plug_RA drilled fiber position) [J2000 degrees]
• Dec (DOUBLE): Object Dec (Plug_Dec drilled fiber position) [J2000 degrees]
• z (FLOAT): Redshift (best pipeline galaxy z_noqso with zwarning_noqso=0)
• z_err (FLOAT): Redshift error (z_err_noqso) based upon fit to chi^2 minimum
• znum (LONG): the znum-th best-fit corresponding to z_noqso (optional input to readspec)
• Vel_stars (FLOAT): Stellar velocity
• Redshift (FLOAT): GANDALF-corrected redshift
• Sigma_Stars (FLOAT): Stellar velocity dispersion
• Sigma_Stars_err (FLOAT): Error on measurement of stellar velocity dispersion
• Chisq (FLOAT): Chi Squared measurement of bestfit template
• Filename (STRING): This holds the filename of either the spectra_emlinekin-PLATE-MJD-FIBERID.fits file or the template_emlinekin-PLATE-MJD-FIBERID.fits by prepending either spectra or template to Filename
• BPT (STRING): BPT classification using the class definitions from Kauffmann et al. (2003), Kewley et al. (2001) and Schawinski et al. (2007) where the emission lines Hβ, [OIII], Hα, [NII] available with AoN > 1.5
• name (STRING[28]): Name of emission line
• lambda (FLOAT[28]): Wavelength of each emission line
• kind (STRING[28]): Identifies whether or not a given line belongs to a doublet or multiplet, in the form "d#" where "#" denotes the index of the strongest line in the multiplet
• a (FLOAT[28]): Identifies the relative strength of the lines in a multiplet
• V (FLOAT[28]): Velocity of emission line
• V_err (FLOAT[28]): Error in the emission line velocity measurement
• Sig (FLOAT[28]): Velocity dispersion of emission line
• Sig_err (FLOAT[28]): Error in the emission line velocity dispersion measurement
• Amplitude (FLOAT[28]): Amplitude of emission line
• Amplitude_err (FLOAT[28]): Error in the emission line amplitude measurement
• Flux (FLOAT[28]): Flux of emission line (reddening corrected)
• Flux_err (FLOAT[28]): Error in the emission line flux measurement
• EW (FLOAT[28]): Equivalent Width of emission line
• EW_err (FLOAT[28]): Error in the emission line equivalent width measurement
• Flux_cont (FLOAT[28]): Continuum flux at emission line location
• Flux_cont_err (FLOAT[28]): Error in the emission line continuum flux measurement
• AoN (FLOAT[28]): A measure of the amplitude-over-noise of each emission line, where AoN = Amplitude / (Original Spectrum: Best-fit Template). Only given for lines that are either the strongest in a multiplet or not in a multiplet
• EBmV (FLOAT): E(B-V) values; Currently, second value always set to 0
• EBmV_err (FLOAT): Error in the emission line E(B-V) measurement
• Fit_Warning (INTEGER[28]): Flag set when Emission Lines fall on sky lines [5577.,6300.,6363.], setting their flux, etc to 0
• Error_Warning (INTEGER): Flag set when the error computation itself does not have a best fit, setting their values to 0.
• BOSS_TARGET1 (LONG64): See BOSS_TARGET
• ANCILLARY_TARGET1 (LONG64): See ANCILLARY_TARGET
• ANCILLARY_TARGET2 (LONG64): See ANCILLARY_TARGET
• SPECPRIMARY (BYTE): Objects observed multiple times will have this set to 1 for one observation only. This is usually the 'best'.
• SPECOBJID (LONG64): CAS-style spectroscopic object identifier.