| Name | Type | Units | Description |
|---|---|---|---|
| Identifiers | |||
objname⭐ |
Common galaxy name | ||
pgc |
PGC number (from HyperLeda) | ||
nsa_id |
NASA-Sloan Atlas NSAID number | ||
specobjid |
unique SDSS 64-bit ID used for optical spectroscopic objects (-1 if not observed) | ||
plate |
SDSS plate number (-1 if not observed) | ||
fiberid |
SDSS fiber number (-1 if not observed) | ||
mjd |
SDSS MJD of spectroscopic observation (-1 if not observed) | ||
group_id |
Galaxy is member of group, number based on Lambert et al. 2020 group catalog | ||
ra⭐ |
deg | Right Ascension combined from catalog sources | |
dec⭐ |
deg | Declination combined from catalog sources | |
ra_nsa |
deg | Right Ascension provided by NSA | |
dec_nsa |
deg | Declination provided by NSA | |
ra_ned |
deg | Primary Right Ascension provided by NED | |
dec_ned |
deg | Primary Declination provided by NED | |
d25 |
arcmin | Apparent Diameter from Karachentsev and HyperLeda | |
v_h⭐ |
km/s | Heliocentric Radial velocity, see Section 3.1 | |
v_cmb |
km/s | Radial velocity with respect to CMB radiation | |
v_source |
Original source for compiled velocity: HyperLeda, LVG, NSA | ||
hl_obj |
True for objects in HyperLeda | ||
lvg_obj |
True for objects in Karachentsev's Catalog of Local Volume Galaxies | ||
nsa_obj |
True for objects in NASA-Sloan Atlas | ||
sga_obj |
True for objects in Siena Galaxy Atlas | ||
| Morphology | - | - | Section 5 |
t_type⭐ |
Numerical Hubble T-Type | ||
color_type |
Color-based Type | ||
best_type⭐ |
Combined galaxy type, see Section 5.1 | ||
| Photometry | - | - | Section 2 |
a_B_leda |
mag | B-band extinction from Hyperleda multiplied by 0.86 to translate to Schlafly, A_V=0.769a_B_leda and A_R=0.629a_B_leda | |
a_g_nsa |
mag | g-band extinction from NASA-Sloan Atlas, the i-band extinction used is = 0.550 a_g_nsa | |
EBV_irsa |
E(B-V) value from IRSA dust website Schlafly values for all galaxies. Used only for the Siena Galaxy Atlas sources, A_g/EBV_sga=3.303, A_r/EBV_sga=2.285. | ||
Bt0_leda |
mag | Extinction corrected total B band magnitude from HyperLeda | |
BV_color_leda |
mag | Extinction corrected (B-V) color from HyperLeda | |
B_lum |
[Lsun] | B-band Luminosity — derived for non-Hyperleda sources as described in Section 2.2 | |
gi_color_nsa |
mag | Extinction corrected (g-i) color from NASA-Sloan Atlas | |
i_lum_nsa |
[Lsun] | i-Band Luminosity, calculated using M_i_sun=4.53 | |
gr_color_sga |
mag | Extinction corrected (g-r) color from Siena Galaxy Atlas | |
r_lum_sga |
[Lsun] | r-band Luminosity, calculated using M_r_sun=4.65 | |
BR_color_ned |
mag | Extinction corrected (B-R) color from NED | |
R_lum_ned |
[Lsun] | R-band Luminosity from NED, calculated using M_R_sun=4.60 | |
BMag |
mag | Estimated absolute B-Band Magnitude for all galaxies | |
gi_color |
mag | Estimated g-i color for all galaxies with color measurements | |
mag_flag |
Flags galaxies with magnitude preference exceptions as described in Section 2.3 | ||
| Distance | - | - | Section 3 |
cf3_dist |
Mpc | Distances from CosmicFlows3 Calculator | |
cf3_dist_error |
Mpc | Error on cf3_dist | |
zind_dist |
Mpc | Redshift independent distances | |
zind_dist_error |
Mpc | Error on zind_dist | |
zind_indicator |
Redshift independent distance indicator listed in NEDD | ||
bestdist⭐ |
Mpc | Our chosen best distance estimate | |
bestdist_error⭐ |
Mpc | error for best distance estimate | |
bestdist_method |
General method used for best distances: CF3-Z, Karachentsev, NED-D, Mei, Cantiello, EVCC, HyperLeda | ||
bestdist_source |
Source/Reference for bestdist, see Section 3 | ||
dist_ned_flag |
Flags galaxies with NED-D best distance exceptions as described in Section 3.2 | ||
| Mass | - | - | Section 4 |
logmass_gi |
[Msun] | log(M*) from (g-i) | |
logmass_gr |
[Msun] | log(M*) from (g-r) | |
logmass_BV |
[Msun] | log(M*) from (B-V) | |
logmass_BR |
[Msun] | log(M*) from (B-R) | |
logmass⭐ |
[Msun] | Compiled best log(M*) estimate | |
logmass_error⭐ |
[Msun] | Error on logmass | |
logmass_src⭐ |
Color used for best mass estimate: g-i, g-r, B-V, B-R | ||
| X-ray | - | - | Section 6 |
chandra_observation |
True if CSCView crossmatch returned a limiting sensitivity at matching position as described in Section 6 | ||
chandra_detection |
True if CSCView crossmatch returned flux information within a 1" matching radius as described in Section 6 | ||
log_lx |
X-ray luminosity log(L_x/erg/sec) calculated from the CSC 0.5-7 keV flux, using a 1" matching radius | ||
chandra_detection_3arcsec |
True if CSCView crossmatch returned flux information within a 3" matching radius as described in Section 6 | ||
log_lx_3arcsec |
X-ray luminosity log(L_x/erg/sec) calculated from the CSC 0.5-7 keV flux, using a 3" matching radius |