SDSS_DR10.GalaxyAdd1 table (restricted)

Column Type Unit UCD Description
galid int meta.id ID
bptcl tinyint meta.code.class galSpecExtra, Brinchmann et al (2004): 0- measurement not present -1 unclass, 1 star-forming, 2 low S/N star-forming, 3 composite, 4 AGN (excluding liners), 5 low S/N LINER
bptcl2 tinyint meta.code.class emissionLinesPort, GANDALF: -1 uncl, 1 star-forming, 3 composite, 4 Seyfert and 5 LINER 6 Seyfert/LINER
veldisp float km/s phys.veloc.dispersion Velocity dispersion
veldisperr float km/s phys.veloc.dispersion Error in velocity dispersion
fracdevr float stat.weight Weight of deV component in deV+Exp model
ba_exp float phys.size.axisRatio Exponential fit b/a in r filter
ba_dev float phys.size.axisRatio de Vaucouleurs fit b/a in r filter
petrorad float arcsec phys.angSize Petrosian radius r filter
petror50 float arcsec phys.angSize Radius containing 50% of Petrosian flux in r filter
petror90 float arcsec phys.angSize Radius containing 90% of Petrosian flux in r filter
phi float deg pos.posAng position angle (+N thru E): composition of exp-dev model fits
lgm_tot_p50 float Log solar masses stat.median The median estimate of the Log total stellar mass PDF using model photometry.
sfr_tot_p50 float Log Msun/yr stat.median The median estimate of the Log total SFR PDF. This is derived by combining emission line measurements from within the fibre where possible and aperture corrections are done by fitting models ala Gallazzi et al (2005), Salim et al (2007) to the photometry outside the fibre. For those objects where the emission lines within the fibre do not provide an estimate of the SFR, model fits were made to the integrated photometry.
specsfr_tot_p50 float Log Msun/yr stat.median The median estimate of the Log total SPECSFR PDF. This is derived by combining emission line measurements from within the fibre where possible and aperture corrections are done by fitting models ala Gallazzi et al (2005), Salim et al (2007) to the photometry outside the fibre. For those objects where the emission lines within the fibre do not provide an estimate of the SFR, model fits were made to the integrated photometry.
d4000 float 4000AA break, Bruzual (1983) definition
d4000_sub float 4000AA break, Bruzual (1983) definition after correction for emission lines
d4000_n_sub float 4000AA break, Balogh et al (1999) definition after correction for emission lines
tauv_cont float phys.absorption.opticalDepth V-band optical depth (TauV = A_V / 1.086) affecting the stars from best fit model (best of 4 Zs)
best_model_z float phys.abund.Z Metallicity of best fitting (min chisq) model Z = 0.004 / 0.017 / 0.050 (0.2 1.0, 2.5 x solar)
e_bv_sfd float mag phot.color.excess E(B-V) of foreground reddening from SFD maps
galspec_reliable tinyint meta.code.class has “reliable” line measurements and physical parameters
velstars float km/s phys.veloc stellar velocity
sigmastars float km/s phys.veloc.dispersion Stellar velocity dispersion
ebmv float mag phot.color.excess E(B-V) for internal reddening estimated from emission lines (model stellarMassFSPSGranEarlyDust)
stg1_chi2 float stat.fit.chi2 Unreduced chi-square of best fit (model stellarMassFSPSGranEarlyDust)
stg1_nfilter tinyint meta.number Number of filters used in the fit (default is 5 for ugriz) (model stellarMassFSPSGranEarlyDust)
stg1_logmass float dex (solar masses) stat.fit.param Best-fit stellar mass of galaxy (model stellarMassFSPSGranEarlyDust)
stg1_t_age float Gyr time.age Best-fit look-back formation time (model stellarMassFSPSGranEarlyDust)
stg1_met float phys.abund.Z Best-fit metallicity, where Z_sun=0.019 (model stellarMassFSPSGranEarlyDust)
stg1_tau float Gyr time Best-fit star formation history e-folding time (tau (model stellarMassFSPSGranEarlyDust))
stg1_age float Gyr time.age Best-fit mass-weighted average age of the stellar population (model stellarMassFSPSGranEarlyDust)
stg1_ssfr float log Gyr-1 phys.SFR Best-fit specific star formation rate (model stellarMassFSPSGranEarlyDust)
stg2_chi2 float stat.fit.chi2 Unreduced chi-square of best fit (model stellarMassFSPSGranEarlyNoDust)
stg2_nfilter tinyint meta.number Number of filters used in the fit (default is 5 for ugriz) (model stellarMassFSPSGranEarlyNoDust)
stg2_logmass float dex (solar masses) stat.fit.param Best-fit stellar mass of galaxy (model stellarMassFSPSGranEarlyNoDust)
stg2_t_age float Gyr time.age Best-fit look-back formation time (model stellarMassFSPSGranEarlyNoDust)
stg2_met float phys.abund.Z Best-fit metallicity, where Z_sun=0.019 (model stellarMassFSPSGranEarlyNoDust)
stg2_tau float Gyr time Best-fit star formation history e-folding time (tau (model stellarMassFSPSGranEarlyNoDust))
stg2_age float Gyr time.age Best-fit mass-weighted average age of the stellar population (model stellarMassFSPSGranEarlyNoDust)
stg2_ssfr float log Gyr-1 phys.SFR Best-fit specific star formation rate (model stellarMassFSPSGranEarlyNoDust)
stg3_chi2 float stat.fit.chi2 Unreduced chi-square of best fit (model stellarMassFSPSGranWideDust)
stg3_nfilter tinyint meta.number Number of filters used in the fit (default is 5 for ugriz) (model stellarMassFSPSGranWideDust)
stg3_logmass float dex (solar masses) stat.fit.param Best-fit stellar mass of galaxy (model stellarMassFSPSGranWideDust)
stg3_t_age float Gyr time.age Best-fit look-back formation time (model stellarMassFSPSGranWideDust)
stg3_met float phys.abund.Z Best-fit metallicity, where Z_sun=0.019 (model stellarMassFSPSGranWideDust)
stg3_tau float Gyr time Best-fit star formation history e-folding time (tau) (model stellarMassFSPSGranWideDust)
stg3_age float Gyr time.age Best-fit mass-weighted average age of the stellar population (model stellarMassFSPSGranWideDust)
stg3_ssfr float log Gyr-1 phys.SFR Best-fit specific star formation rate (model stellarMassFSPSGranWideDust)
stg4_chi2 float stat.fit.chi2 Unreduced chi-square of best fit (model stellarMassFSPSGranWideNoDust)
stg4_nfilter tinyint meta.number Number of filters used in the fit (default is 5 for ugriz) (model stellarMassFSPSGranWideNoDust)
stg4_logmass float dex (solar masses) stat.fit.param Best-fit stellar mass of galaxy (model stellarMassFSPSGranWideNoDust)
stg4_t_age float Gyr time.age Best-fit look-back formation time (model stellarMassFSPSGranWideNoDust)
stg4_met float phys.abund.Z Best-fit metallicity, where Z_sun=0.019 (model stellarMassFSPSGranWideNoDust)
stg4_tau float Gyr time Best-fit star formation history e-folding time (tau) (model stellarMassFSPSGranWideNoDust)
stg4_age float Gyr time.age Best-fit mass-weighted average age of the stellar population (model stellarMassFSPSGranWideNoDust)
stg4_ssfr float log Gyr-1 phys.SFR Best-fit specific star formation rate (model stellarMassFSPSGranWideNoDust)
stp1_chi2 float stat.fit.chi2 Reduced chi squared of best fit (stellarMassPassivePort)
stp1_nfilter tinyint meta.number Number of filters used in the fit (default is 5 for ugriz) (stellarMassPassivePort)
stp1_logmass float dex (solar masses) phys.mass Best-fit stellar mass of galaxy (stellarMassPassivePort)
stp1_age float Gyr time.age Age of best fit (stellarMassPassivePort)
stp1_sfr float solar masses per year phys.SFR Star-formation rate of best fit (stellarMassPassivePort)
stp2_chi2 float stat.fit.chi2 Reduced chi squared of best fit (stellarMassStarformingPort)
stp2_nfilter tinyint meta.number Number of filters used in the fit (default is 5 for ugriz) (stellarMassStarformingPort)
stp2_logmass float dex (solar masses) phys.mass Best-fit stellar mass of galaxy (stellarMassStarformingPort)
stp2_age float Gyr time.age Age of best fit (stellarMassStarformingPort)
stp2_sfr float solar masses per year phys.SFR Star-formation rate of best fit (stellarMassStarformingPort)
stw1_warning tinyint meta.code Output warnings: 0 if everything is fine. (stellarMassPCAWiscBC03)
stw1_mstellar float dex (solar mass) phys.mass median (50th percentile of PDF) of log stellar mass (best estimator) (stellarMassPCAWiscBC03)
stw1_vdisp float km/s phys.veloc.dispersion median (50th percentile of PDF) of velocity dispersion (best estimator) (stellarMassPCAWiscBC03)
stw2_warning tinyint meta.code Output warnings: 0 if everything is fine. (stellarMassPCAWiscM11)
stw2_mstellar float dex (solar mass) phys.mass median (50th percentile of PDF) of log stellar mass (best estimator) (stellarMassPCAWiscM11)
stw2_vdisp float km/s phys.veloc.dispersion median (50th percentile of PDF) of velocity dispersion (best estimator) (stellarMassPCAWiscM11)
gm8_inc_method tinyint inclination modelling reliability
gm8_inc float deg inclination angle of galaxy
gm8_pos float deg pos.posAng position angle of galaxy