pgc
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Principal Catalogue of Galaxies number.
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objname
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Object name in the HyperLEDA.
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id_ned
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Name in NED.
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id_nedd
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Name in NED-Distance Catalogue.
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id_iras
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Name in IRAS-RBGS, or in RIFSCz if in the form Fxxxxx+xxxx.
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id_2mass
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ID in 2MASS-LGA, 2MASS-XSC, or 2MASS-PSC (see `flag_2mass`).
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sdss_photid
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SDSS photometric ID (consistent with DR8 releases and later).
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sdss_specid
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SDSS spectroscopic ID (consistent with DR8 releases and later).
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ra
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Decimal right ascension J2000.0 (degrees).
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dec
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Decimal declination J2000.0 (degrees).
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f_astrom
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Astrometric precision flag: -1 for ~0.1 arcsec, 0 for 1 arcsec, 1 for 10 arcsec, etc.
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r1
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D25 semi-major axis (arcmin).
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r2
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D25 semi-minor axis (arcmin).
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pa
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D25 positional angle, North-to-Northeast (degrees).
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rsource
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Source of the galaxy-size information: H=HyperLEDA, S=SDSS, 2=2MASS, 6=2dFGS, W=WINGS, Y=SkyMapper, A=Amiga-CIG, K=UNGC, V=VIII/77, 1=KKH2001, 7=KKH2007, N=NED.
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rflag
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Galaxy-size information flag: 0=missing, 1=all axes and positional angle defined, 2=r2 and/or pa were missing and they were set equal to r1 and 0 (circular isophote).
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t
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Numerical Hubble-type following the de Vaucouleurs et al. 1976 system.
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e_t
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Uncertainty on the numerical Hubble-type.
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incl
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Inclination (degrees).
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v
|
Heliocentric radial velocity (km/s).
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e_v
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Uncertainty on the heliocentric radial velocity (km/s).
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v_vir
|
Virgo-infall corrected radial velocity (km/s).
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e_v_vir
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Uncertainty on the Virgo-infall corrected radial velocity (km/s).
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ndist
|
Number of redshift-independent measurements in NED-D used for the computation of the distance.
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edist
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If True, the NED-D distance measurements had uncertainties.
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d
|
Distance (Mpc).
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e_d
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Uncertainty on the distance (Mpc).
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d_lo68
|
Lower bound of the 68% confidence interval of the distance (Mpc).
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d_hi68
|
Upper bound of the 68% confidence interval of the distance (Mpc).
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d_lo95
|
Lower bound of the 95% confidence interval of the distance (Mpc).
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d_hi95
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Upper bound of the 95% confidence interval of the distance (Mpc).
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dmethod
|
Method for the estimation of the distance:
N=using NED-D distance measurements,
Z=regression,
Zv=regression for Virgo Cluster members,
C=distance from NED-D measurements but uncertainty from regression, Cv=distance from NED-D measurements but uncertainty from Virgo Cluster regressor.
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ut
|
Total U-band apparent magnitude (mag).
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bt
|
Total B-band apparent magnitude (mag).
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vt
|
Total V-band apparent magnitude (mag).
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it
|
Total I-band apparent magnitude (mag).
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e_ut
|
Uncertainty on the total U-band apparent magnitude (mag).
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e_bt
|
Uncertainty on the total B-band apparent magnitude (mag).
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e_vt
|
Uncertainty on the total V-band apparent magnitude (mag).
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e_it
|
Uncertainty on the total I-band apparent magnitude (mag).
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ag
|
Galactic absorption in B-band (mag).
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ai
|
Intrinsic absorption in B-band (mag).
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s12
|
12μm-band flux from IRAS (Jy)
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s25
|
25μm-band flux from IRAS (Jy)
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s60
|
60μm-band flux from IRAS (Jy)
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s100
|
100μm-band flux from IRAS (Jy)
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q12
|
Quality flag for the 12μm-band flux from IRAS (Jy):
0=not in IRAS, 1=upper limit, 2=moderate, 3=high, 4=flux from IRAS-RBGS.
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q25
|
Quality flag for the 25μm-band flux from IRAS (Jy):
0=not in IRAS, 1=upper limit, 2=moderate, 3=high, 4=flux from IRAS-RBGS.
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q60
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0=not in IRAS, Quality flag for the 60μm-band flux from IRAS (Jy):
0=not in IRAS, 1=upper limit, 2=moderate, 3=high, 4=flux from IRAS-RBGS.
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q100
|
Quality flag for the 100μm-band flux from IRAS (Jy):
0=not in IRAS, 1=upper limit, 2=moderate, 3=high, 4=flux from IRAS-RBGS.
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wf1
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3.3μm-band (W1) apparent magnitude in the WISE forced photometry catalog (mag).
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wf2
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4.6μm-band (W2) apparent magnitude in the WISE forced photometry catalog (mag).
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wf3
|
12μm-band (W3) apparent magnitude in the WISE forced photometry catalog (mag).
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wf4
|
22μm-band (W4) apparent magnitude in the WISE forced photometry catalog (mag).
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e_wf1
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Uncertainty on the 3.3μm-band (W1) apparent magnitude in the WISE forced photometry catalog (mag).
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e_wf2
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Uncertainty on the 4.6μm-band (W2) apparent magnitude in the WISE forced photometry catalog (mag).
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e_wf3
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Uncertainty on the 12μm-band (W3) apparent magnitude in the WISE forced photometry catalog (mag).
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e_wf4
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Uncertainty on the 22μm-band (W4) apparent magnitude in the WISE forced photometry catalog (mag).
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wfpoint
|
True if point source in the WISE forced photometry catalog.
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wftreat
|
True if treated as point source in the WISE forced photometry catalog.
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j
|
J-band apparent magnitude in 2MASS (mag).
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h
|
H-band apparent magnitude in 2MASS (mag).
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k
|
J-band apparent magnitude in 2MASS (mag).
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e_j
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Uncertainty on the J-band apparent magnitude in 2MASS (mag).
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e_h
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Uncertainty on the H-band apparent magnitude in 2MASS (mag).
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e_k
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Uncertainty on the K-band apparent magnitude in 2MASS (mag).
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flag_2mass
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Source of the 2MASS ID and magnitudes:
0=none, 1=LGA, 2=XSC, 3=PSC.
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u
|
u-band SDSS apparent magnitude (mag).
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g
|
g-band SDSS apparent magnitude (mag).
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r
|
r-band SDSS apparent magnitude (mag).
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i
|
i-band SDSS apparent magnitude (mag).
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z
|
z-band SDSS apparent magnitude (mag).
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e_u
|
Uncertainty on the u-band SDSS apparent magnitude (mag).
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e_g
|
Uncertainty on the g-band SDSS apparent magnitude (mag).
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e_r
|
Uncertainty on the r-band SDSS apparent magnitude (mag).
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e_i
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Uncertainty on the i-band SDSS apparent magnitude (mag).
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e_z
|
Uncertainty on the z-band SDSS apparent magnitude (mag).
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logL_TIR
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Decimal logarithm of the total-infrared (TIR) luminosity in solar luminosities (3.83x1033 erg/s)
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logL_FIR
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Decimal logarithm of the far-infrared (FIR) luminosity in solar luminosities.
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logL_60μ
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Decimal logarithm of the 60um-band luminosity in solar luminosities.
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logL_12μ
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Decimal logarithm of the 12um-band luminosity in solar luminosities.
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logL_22μ
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Decimal logarithm of the 22um-band luminosity in solar luminosities.
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logL_K
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Decimal logarithm of the K-band luminosity in solar luminosities.
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ML_ratio
|
Mass-to-light ratio for the 2MASS K-band using SDSS g-r colour (Bell et al. 2003).
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logSFR_TIR
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Decimal logarithm of the TIR-based star-formation rate in solar masses per year.
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logSFR_FIR
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Decimal logarithm of the FIR-based star-formation rate in solar masses per year.
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logSFR_60u
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Decimal logarithm of the 60um-based star-formation rate in solar masses per year.
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logSFR_12u
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Decimal logarithm of the 12um-based star-formation rate in solar masses per year.
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logSFR_22u
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Decimal logarithm of the 22um-based star-formation rate in solar masses per year.
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logSFR_HEC
|
Decimal logarithm of the homogenised star-formation rate in solar masses per year.
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SFR_HEC_flag
|
Flag indicating the source of the photometry and the SFR indicator used in the homogenised SFR:
RT=IRAS-RBGS photometry and TIR indicator.
FT=RIFSCz photometry and TIR indicator.
FF=RIFSCz photometry and FIR indicator.
W3=WISE W3-band forced photometry and indicator.
W4=WISE W4-band forced photometry and indicator.
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logM_HEC
|
Decimal logarithm of the total stellar mass in solar masses.
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logSFR_GSW
|
Decimal logarithm of the SED-based star-formation rate from the GSWLC-2 in solar masses per year.
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logM_GSW
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Decimal logarithm of the SED-based stellar mass from the GSWLC-2 in solar masses.
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min_snr
|
Minimum signal-to-noise ratio of the emission lines used for the activity classification (class_sp).
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metal
|
12+log(O/H) gas-phase metallicity.
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flag_metal
|
Metallicity flag:
-1=missing
0=reliable
1=O3N2 ratio >2 (outside the PP04 range)
2=low signal-to-noise ratio (<3 for the weakest line).
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class_sp
|
Nuclear activity classification using the method in Stampoulis et al. 2019: 0=star-forming, 1=Seyfert, 2=LINER, 3=composite, -1=unknown.
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agn_s17
|
AGN classification in She et al. 2017: Y=AGN, N=non-AGN, ?=unknown
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agn_hec
|
Adopted activity classification based on the combination of class_sp and
agn_s17: Y=AGN, N=non-AGN, ?=unknown
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