GLOBCLUST - Milky Way Globular Clusters Catalog (February 2003 Version)
Please acknowledge the use of this catalog in any published work you derive from it. The proper reference to the literature is the published paper (Harris, W.E. 1996, AJ, 112, 1487) which briefly describes the setup of the catalog. The author would also greatly appreciate receiving any new information, in published or preprint form, which would help him to keep the list up to date (contact W. E. Harris at firstname.lastname@example.org).
A full discussion of the sources used in the creation of this catalog and of the parameters that it contains can be found in the file: http://www.physics.mcmaster.ca/~harris/mwgc.ref
A catalog of parameters for globular clusters in the Milky Way Harris W.E. <Astron. J. 112, 1487 (1996)> =1996AJ....112.1487H (SIMBAD/NED BibCode)
The commonly used name of the globular cluster.
An alternative commonly used name of the globular cluster.
The Right Ascension of the cluster in the specified equinox. This was given in equinox 2000 and with a precision of 0.1 seconds of time in the originating table.
The Declination of the cluster in the specified equinox. This was given in equinox 2000 and with a precision of 1 arcsecond in the originating table.
The Galactic Longitude of the cluster.
The Galactic Latitude of the cluster.
The distance of the cluster from the Sun, in kiloparsecs (kpc).
The distance of the cluster from the Galactic Center, in kiloparsecs (kpc), assuming that the distance of the Sun from the Galactic Center R_0 is 8.0 kpc.
The distance component X in a Sun-centered coordinate system, in kiloparsecs (kpc), where X points toward the Galactic center, Y points in the direction of the Galactic rotation, and Z points towards the North Galactic Pole.
The distance component Y in a Sun-centered coordinate system, in kiloparsecs (kpc), where X points toward the Galactic center, Y points in the direction of the Galactic rotation, and Z points towards the North Galactic Pole.
The distance component Z in a Sun-centered coordinate system, in kiloparsecs (kpc), where X points toward the Galactic center, Y points in the direction of the Galactic rotation, and Z points towards the North Galactic Pole.
The foreground reddening, E(B-V), in magnitudes.
The V magnitude level of the cluster horizontal branch (or of the cluster's RR Lyrae variables).
The apparent visual distance modulus, (m-M)_V, in magnitudes.
The integrated V magnitude of the cluster.
The absolute visual magnitude (cluster luminosity).
The integrated U-B color index (uncorrected for reddening).
The integrated B-V color index (uncorrected for reddening).
The integrated V-R color index (uncorrected for reddening).
The integrated V-I color index (uncorrected for reddening).
The specific frequency of RR Lyrae variables in the cluster, i.e., the number of RR Lyrae variables in the cluster, normalized to a total cluster luminosity M_Vt = -7.5.
The horizontal-branch ratio parameter, HBR = (B-R)/(B+V+R), where, in this case, B denotes the number of horizontal-branch stars on the blue side of the RR Lyrae region, V the number of stars in the RR Lyrae region, and R the number of stars on the red side of the RR Lyrae region.
The Dickens horizontal-branch morphological type on an integer scale from 1 to 7, where 1 denotes a cluster with a completely blue HB (all stars on the blue side of the RR Lyrae region) and 7 denotes a completely red HB. The author of this catalog has introduced, in addition, a new type of "0" to denote any cluster with an extremely blue extension of the HB. In a few cases, where the distribution of stars along the HB is bimodal, the cluster has been assigned two simultaneous HB types.
The cluster metallicity, [Fe/H], relative to the solar value.
The cluster integrated spectral type.
The heliocentric radial velocity of the cluster, in km/s.
The observational (internal) uncertainty in the radial velocity of the cluster, in km/s.
The radial velocity of the cluster relative to the Solar Local Standard of Rest, in km/s.
The cluster central concentration, c = log(r_t/r_c), where r_t is the tidal radius of the cluster and r_c is the core radius of the cluster.
A flag that is set to 'C' to denote a core-collapsed cluster.
The core radius r_c of the cluster, in arcminutes.
The half-mass radius of the cluster, in arcminutes.
The tidal radius r_t of the cluster, in arcminutes.
The logarithm (base 10) of the core relaxation time of the cluster, in years.
The logarithm (base 10) of the relaxation time at the half-mass radius of the cluster, in years.
The central surface brightness of the cluster, in V magnitudes per square arcsecond.
The logarithm (base 10) of the central luminosity density of the cluster, in units of Solar luminosities per cubic parsec (L_sun/pc^3).
The HEASARC Browse object classification: all objects in this catalog have been given the (same) class, globular cluster.
The ellipticity or eccentricity of the cluster e = (1 - b/a), where a and b are the semimajor and semiminor axes of the cluster light profile, respectively. This parameter is a measure of the projected shape of the cluster.