Catalogues

Hydra / Milky Way Globular Clusters

«A Catalog of Parameters for Globular Clusters in the Milky Way» William E. Harris, 1996 [148]
ID Name RA Dec RSun RGC Fe/H wt EB-V VHB (m-M)V Vt MV,t U-B B-V V-R V-I spt ellip vr vLSR sigv c rc rh μV ρ0 lg(tc) lg(th)
NGC 4590 M 68 12 39 27.98 -26 44 38.6 10.3 10.2 -2.23 5 0.05 15.68 15.21 7.84 -7.37 0.04 0.63 0.46 0.94 F2/3 0.05 -94.7 ± 0.2 -96.8 2.5 ± 0.4 1.41 0.58 1.51 18.81 2.57 8.45 9.27
AM 4 13 56 21.7 -27 10 03 32.2 27.8 -1.30 1 0.05 18.30 17.69 15.88 -1.81 0.70 0.41 0.43 24.75 -0.05 8.42 8.32
NGC 5694 14 39 36.29 -26 32 20.2 35.0 29.4 -1.98 5 0.09 18.50 18.00 10.17 -7.83 0.08 0.69 0.48 0.98 F4 0.04 -140.3 ± 0.8 -136.2 5.8 ± 0.8 1.89 0.06 0.40 16.51 3.95 7.85 9.27

Legend

Key to columns [148]
ID Cluster identification number
Name Other commonly used cluster name
RA Right ascension (epoch J2000)
Dec Declination (epoch J2000)
RSun Distance from Sun (kiloparsecs)
RGC Distance from Galactic center (kpc), assuming R_0=8.0 kpc
Fe/H Metallicity [Fe/H]
wt Weight of mean metallicity; essentially the number of independent [Fe/H] measurements averaged together.
EB-V Foreground reddening
VHB V magnitude level of the horizontal branch (or RR Lyraes)
(m-M)V Apparent visual distance modulus
Vt Integrated V magnitude of the cluster
MV,t Absolute visual magnitude (cluster luminosity), M_V,t = V_t - (m-M)V
U-B Integrated color indices (uncorrected for reddening)
B-V Integrated color indices (uncorrected for reddening)
V-R Integrated color indices (uncorrected for reddening)
V-I Integrated color indices (uncorrected for reddening)
spt Spectral type of the integrated cluster light
ellip Projected ellipticity of isophotes, e = 1-(b/a)
vr Heliocentric radial velocity (km/s)
vLSR Radial velocity relative to Solar neighborhood LSR
sigv Central velocity dispersion sig_v (km/s)
c King-model central concentration, c = log(r_t/r_c); a 'c' denotes a core-collapsed cluster
rc Core radius in arcmin
rh Half-light radius in arcmin
μV Central surface brightness, V magnitudes per square arcsecond
ρ0 Central luminosity density, log_10(Solar luminosities per cubic parsec)
lg(tc) Core relaxation time t(r_c), in log_10(years)
lg(th) Median relaxation time t(r_h), in log_10(years)

References