Column | Description |
pgc | PGC number |
Name | Common name |
J2000 | Equatorial coordinates from LEDA, epoch J2000 |
UGC/AGC | Cornell identifier: alternatively UGC or AGC |
Alt_Name | NGC, IC, ESO, CGCG, MCG, or other names |
RAJ | Right ascension, epoch J2000 in Cornell catalog |
DeJ | Declination, epoch J2000 in Cornell catalog |
Ty | Morphological type; RC3 numeric code |
r23.5 | I band isophotal radius at 23.5 mag/arcsec^2 |
r83L | Optical radius encompassing 83% of light |
mu_out | I band surface magnitude at outermost detected isophote |
ell | Disk ellipticity, seeing corrected |
e_ell | Error in disk ellipticity |
PA | Disk position angle, average over isophotes |
e_PA | Error in disk position angle |
tf | Cases with asterisks are lacking high quality width measurements |
Wtf | Log of the corrected rotational velocity width; Cornell group corrections |
e_Wtf | Error in log Wtf |
m_obs | Observed I band magnitude extrapolated to 8 disk scale lengths, without corrections |
e_m | Measurement error on apparent magnitude M_obs |
m_c | Apparent magnitude, corrected for Galactic and internal extinction |
M_I | Absolute I magnitude, corrected for absorption and at a distance given by redshift assuming Ho=100 km/s/Mpc |
e_MI | Error in M_I, including uncertainties in corrections |
gamma | Extinction coefficient |
inc | Inclination of plane of disk to plane of sky |
Vcmb | Velocity in CMB frame, from midpoint of spectral line profile |
Vpec | Peculiar velocity, uncorrected for bias |
e_Vp | Error in peculiar velocity |
Dist | Distance, uncorrected for bias, Vcmb-Vpec; if in a group then Vcmb is averaged over group |
Vp_b | Bias corrected peculiar velocity; individual - not averaged if in group |
e_Vpb | Error in bias corrected peculiar velocity |
D_bias | Bias corrected distance; individual - not averaged if in group |
Gp_ID | Group ID; SCI/SC2 cluster, NOG groups (30,000 series), VDM groups (40,000 series) |
O/H | Spectroscopy code: O=optical, H=HI |
Theta | Angular separation from cluster center |
Cluster | Template cluster name |
mem | Cluster membership status: c=cluster (in) sample, g= not firm (in+) sample |
RAJg | Right ascension of group center, J2000 |
DeJg | Declination of group center, J2000 |
Vcmbg | CMB frame group velocity, averaged over all constituents |
e_Vg | Error in CMB frame group velocity |
Ng | N0. galaxies in group with data in SFI++ (Template clusters from Masters Table 3: No. `In' galaxies) |
Na | No. AGC galaxies in group (Template clusters from Masters Table 3: No. `In+' galaxies) |
Vpg | Group peculiar velocity, uncorrected for bias (Template clusters: includes only `In' galaxies) |
e_Vpg | Error in group peculiar velocity, uncorrected for bias |
Dg | Distance to group, Vcmbg-Vpg, uncorrected for bias (Template clusters: includes only `In' galaxies) |
Vpg_b | Bias corrected group peculiar velocity (Template clusters: includes only `In' galaxies) |
e_Vpgb | Error in bias corrected group peculiar velocity |
Dg_b | Bias corrected group distance (Template clusters: includes only `In' galaxies) |
Int_ID | Internal group ID number |