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MWGC: The Catalogue of Milky Way Globular Clusters, by W. E. Harris.

Contents

Table name: 	mwgc
Records:  	141.	
Version:        1994 June.
Spectral Band: 	Optical	
Kind of Object:	Globular Clusters. 
Mode:
PreView:
Coordinates: 	J2000

Reference

• For a fuller explanation and extensive references, click here.

Fields

Name		Meaning

ident:	    Cluster identification
name:       Other commonly used cluster name
r_a, dec:   Right ascension and declination (epoch 2000)
lii, bii:   Galactic longitude and latitude (degrees)
r_sun:      Distance from Sun (kiloparsecs)
r_gc:       Distance from Galactic center (kpc), assuming 
            R_0=8.0 kpc
X, Y, Z:    Distance components X,Y,Z in Sun-centered coordinate
            system; X points toward Galactic center, Y in
            direction of Galactic rotation, Z toward North
            Galactic Pole
V_int:      Integrated V magnitude of the cluster
u_b, b_v, 
v_r, v_i:   Integrated color indices (uncorrected for reddening)
e_b_v:      Foreground reddening
dist_mod:   Apparent visual distance modulus
absV_int:   Absolute visual magnitude (cluster luminosity)
mu_v:       Central surface brightness, V magnitudes per square
            arcsecond
v_hb:       V magnitude level of the horizontal branch
            (or RR Lyraes)
s_rr:       Specific frequency of RR Lyrae variables
hbr:        Horizontal-branch ratio, HBR = (B-R)/(B+V+R)
hbt:        Dickens horizontal-branch morphological type
FeH:        Metallicity [Fe/H]
SpT:        Integrated spectral type
radvel:     Heliocentric radial velocity (km/s)
err_radvel: Observational uncertainty in radial velocity
v_lsr:      Radial velocity relative to Solar local standard of rest
conc:       Central concentration, c = log(r_t/r_c);
con_note:   a 'c' denotes a core-collapsed cluster
r_c:        Core radius in arcmin
r_hm:       Half-mass radius in arcmin
r_hnote:    a `:' in case of uncertainty in the above
logtc:      Logarithm (base 10) of core relaxation time,
            in years
logth:      Logarithm of relaxation time at the half-mass
            radius
rho_0:      Logarithm of central luminosity density
            (Solar luminosities per cubic parsec)