Column | Description |
pgc | Principal Galaxies Catalog # from LEDA |
objname | Common name: Mathewson & Ford 1996, ApJS 107, 97 (2447 gal.) |
morph | Morphological type |
T | Morphological numeric code running +3 for Sb to +8 for Sdm: see RC3 |
DiamESO | Major axis diameter from ESO catalog |
MajDiamI | Major axis diameter at I 23.5 mag/arcsec^2 isophot |
MinDiamI | Minor axis diameter at I 23.5 mag/arcsec^2 isophot |
Incl | Inclination: Mathewson I photometry averaged over 3 isophot levels |
PA | Position angle: Mathewson I photometry averaged over 3 isophot levels |
DiamFaceOn | Face on diameter: log D(0) = log (a) - 0.235 log (a/b) + 0.09 A_ext |
Ag | Extinction in our Galaxy, A_ext, following Burstein & Heiles |
Ai | Extinction due to inclination of target galaxy following Tully & Fouque' |
Ak | K correction following Schneider et al. 1983 |
It | Total I magnitude extrapolated to sky |
Itc | Total I magnitude corrected for Galactic and internal absorption and K dimming |
SBI | Integrated surface brightness: ISB = I_D(0)^c + 5 log D(0) + 2.5 log pi |
Vhopt | Heliocentric optical velocity |
Vh21 | Heliocentric HI velocity |
dVopt | Half difference between max and min values of optical rotation curve / (1+z) |
dW50 | W50/2: half HI linewidth at 50% peak intensity |
el_W50 | Error in dW50 associated with blue wing |
er_W50 | Error in dW50 associated with red wing |
dW20 | W20/2: half HI linewidth at 20% peak intensity |
el_W20 | Error in dW20 associated with blue wing |
er_W20 | Error in dW20 associated with red wing |
Vrot | dVop/sin i: maximum rotation velocity; if only HI: dVop = 1.03 dV50 - 11 |
FHI | HI flux density corrected for beam effects in Jy km/s |
rms | RMS noise in mJy |
SNR | Peak signal divided by rms noise |
V_CMB | Velocity in CMB reference frame: preference given to Vop over V21 |
V_LG | Velocity in Local Group reference frame |
Qual | Width Quality code : 1-3: good, 8: not checked, 9: profile not available online |
al2000 | Right Ascention (J2000) |
de2000 | Declination (J2000) |