Astronomy and Astrophysics, volume 416, 917-924 (2004/3-4)
2MASS NIR photometry for 693 candidate globular clusters in M 31 and the Revised Bologna Catalogue.
GALLETI S., FEDERICI L., BELLAZZINI M., FUSI PECCI F. and MACRINA S.
Abstract (from CDS):
We have identified in the 2MASS database 693 known and candidate globular clusters in M 31. The 2MASS J, H, K magnitudes of these objects have been transformed to the same homogeneous photometric system of existing near infrared photometry of M 31 globulars, finally yielding J, H, K integrated photometry for 279 confirmed M 31 clusters, 406 unconfirmed candidates and 8 objects with controversial classification. Of these objects 529 lacked any previous estimate of their near infrared magnitudes. The newly assembled near infrared dataset has been implemented into a revised version of the Bologna Catalogue of M 31 globulars, with updated optical (UBVRI) photometry taken, when possible, from the most recent sources of CCD photometry available in the literature and transformed to a common photometric system. The final Revised Bologna Catalogue (available in electronic form) is the most comprehensive list presently available of confirmed and candidate M 31 globular clusters, with a total of 1164 entries. In particular, it includes 337 confirmed GCs, 688 GC candidates, 10 objects with controversial classification, 70 confirmed galaxies, 55 confirmed stars, and 4 H II regions lying within ∼3° from the center of the M 31 galaxy. Using the newly assembled database we show that the V-K color provides a powerful tool to discriminate between M 31 clusters and background galaxies, and we identify a sample of 83 globular cluster candidates, which is not likely to be contaminated by misclassified galaxies.
galaxies: individual: M 31 - galaxies: star clusters - infrared: general - catalogs
VizieR on-line data:
<Available at CDS (J/A+A/416/917): table2.dat table3.dat table4.dat refs.dat>
Table 2: M31GC JHHMMSS+DDMMSS N=1164.
SH 11 and 12 = [S73] 11, 12. G171 and G162 = SKHB 171, 162. 230D-DAO61 = Bol D230. DAO96 = [CCS85] 96. 3 M31GC names lead to confusion.
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