Column | Description |
pgc | PGC number |
Nest | 2MASS group ID |
Dist | Luminosity distance (weighted average if more than one source) |
DM | Luminosity distance modulus (weighted average if more than one source) |
eD | 1 sigma error in fractional distance (from weights if more than one source) |
C | Distance method: Cepheid Period-Luminosity relation |
T | Distance method: Tip of the Red Giant Branch from collaboration HST program (Jacobs et al. 2009) |
L | Distance method: Tip of the Red Giant Branch (literature) |
M | Distance method: miscellaneous (RR Lyrae, Horizontal Branch, Eclipsing Binary) |
S | Distance method: Surface Brightness Fluctuation |
N | Distance method: Supernovae |
H | Distance method: spiral luminosity-rotation correlation (Tully-Fisher) |
F | Distance method: E/S0 Fundamental Plane |
RAJ | Right Ascension (J2000) |
DeJ | Declination (J2000) |
Glon | Galactic longitude |
Glat | Galactic latitude |
SGL | Supergalactic longitude |
SGB | Supergalactic latitude |
Ty | Morphological type; RC3 numeric code |
Asfd | Reddening at B band from Schlegel et al (1998) dust maps |
Btot | Total B magnitude from LEDA |
Ks | 2MASS Ks magnitude, extinction corrected from Huchra et al. 2012 or else Lavaux-Hudson 2011 |
Vhel | Heliocentric velocity |
Vgsr | Velocity in Galactic standard of rest (circular velocity at Sun of 239 km/s; total velocity 251 km/s toward l=90,b=0) |
Vls | Velocity in Local Sheet standard of rest (Tully et al. 2008) |
Vcmb | Velocity in CMB standard of rest (Fixsen et al. 1996) |
Vmod | Velocity in CMB standard of rest adjusted in accordance with a cosmological model with Omega_matter=0.27 and Omega_Lambda=0.73 |
Name | Common name |
Icnt | Internal group ID |
2Mass | Group ID from 2MASS++ catalog of Lavaux & Hudson (2011) |
Ndgp | Number of galaxies with distance measures in group |
Dgp | Luminosity distance to group |
DMgp | Luminosity distance modulus to group |
eDgp | 1 sigma error in fractional group distance |
NV | Number of galaxies with positions and velocities in group |
Lgp | Galactic longitude of group |
Bgp | Galactic latitude of group |
SGLgp | Supergalactic longitude of group |
SGBgp | Supergalactic latitude of group |
Tgp | Mean galaxy type in group |
S_B | Total B magnitude summed across all members of group |
S_K | Total Ks magnitude summed across all members of group |
Vhgp | Mean heliocentric velocity of group |
Vggp | Group mean velocity in Galactic standard of rest (circular velocity at Sun of 239 km/s; total velocity 251 km/s toward l=90,b=0) |
Vlsgp | Group velocity in Local Sheet standard of rest (Tully et al. 2008) |
Vcgp | Group velocity in CMB standard of rest (Fixsen et al. 1996) |
Vmgp | Group velocity in CMB standard of rest adjusted in accordance with a cosmological model with Omega_matter=0.27 and Omega_Lambda=0.73 |
Vrms | Group r.m.s. velocity dispersion |
GroupName | Alternate names for group or cluster |