Catalogues

Catalogue

Constellation

«A Catalog of Parameters for Globular Clusters in the Milky Way» William E. Harris, 1996 ^[148]
ID	Name	RA	Dec	R_Sun	R_GC	Fe/H	wt	E_B-V	V_HB	(m-M)V	V_t	M_V,t	U-B	B-V	V-R	V-I	spt	ellip	v_r	v_LSR	sig_v	c	r_c	r_h	μ_V	ρ₀	lg(tc)	lg(th)
Pyxis		09 07 57.8	-37 13 17	39.4	41.4	-1.20	3	0.21	19.25	18.63	12.90	-5.73							34.3 ± 1.9	20.7

Key to columns ^[148]
ID	Cluster identification number
Name	Other commonly used cluster name
RA	Right ascension (epoch J2000)
Dec	Declination (epoch J2000)
R_Sun	Distance from Sun (kiloparsecs)
R_GC	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.
E_B-V	Foreground reddening
V_HB	V magnitude level of the horizontal branch (or RR Lyraes)
(m-M)V	Apparent visual distance modulus
V_t	Integrated V magnitude of the cluster
M_V,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)
v_r	Heliocentric radial velocity (km/s)
v_LSR	Radial velocity relative to Solar neighborhood LSR
sig_v	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
r_c	Core radius in arcmin
r_h	Half-light radius in arcmin
μ_V	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)