SIMBAD references

2007A&A...474..121B - Astronomy and Astrophysics, volume 474, 121-127 (2007/10-4)

A deep near-infrared view of the Galactic globular cluster 2MASS GC02.


Abstract (from CDS):

We have obtained deep infrared images and K-band spectra of the Galactic globular cluster 2MASS GC02. A variable star search has also been carried out. Some basic physical properties of the cluster, such as metallicity, reddening, distance modulus and radial velocity, are derived. These measurements are based on an analysis of the J-Ks versus Ks color-magnitude diagram of the cluster. Spectroscopically derived metallicities and radial velocities of 15 stars are presented. In addition, periods and amplitudes are provided for five RR Lyrae stars discovered in the field. The cluster is moderately metal-rich and has a relatively high radial velocity. Its horizontal branch appears to be predominantly red, though our photometry cannot rule out the presence of a blue component as seen in NGC 6388 and NGC 6441. Similar to these two clusters, the detected RR Lyrae stars in GC02 have anomalously long periods for the cluster's moderately high metallicity, which suggests that it too is an Oosterhoff type III cluster. Comparison with the existing kinematic and abundance information for the Galactic globular clusters shows that GC02 most probably belongs to the bulge sub population, although an inner halo association cannot be ruled out.

Abstract Copyright:

Journal keyword(s): Galaxy: globular clusters: general - Galaxy: globular clusters: individual: 2MASS GC01 - Galaxy: abundances - Galaxy: globular clusters: individual: 2MASS GC02 - Galaxy: globular clusters: individual: NGC 6388 - Galaxy: globular clusters: individual: NGC 6441

VizieR on-line data: <Available at CDS (J/A+A/474/121): table1.dat phot.dat>

Nomenclature: Table 1: [BIS2007] N=15. Table 3: [BIS2007] VN (Nos V1-V5). Catalog: [BIS2007] xxx.xx-yy.yyy N=2142.

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 30

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