Kataloge

Pegasus / 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 7078 M 15 21 29 58.33 +12 10 01.2 10.4 10.4 -2.37 11 0.10 15.83 15.39 6.20 -9.19 0.06 0.68 0.85 F3/4 0.05 -107.0 ± 0.2 -96.0 13.5 ± 0.9 2.29 c 0.14 1.00 14.21 5.05 7.84 9.32
Pal 13 23 06 44.44 +12 46 19.2 26.0 26.9 -1.88 2 0.05 17.75 17.23 13.47 -3.76 -0.11 0.76 25.2 ± 0.3 30.9 0.9 ± 0.3 0.66 0.48 0.36 24.31 0.16 8.36 8.35

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)

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