Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002pobeo..73..219s&link_type=abstract
Publications of the Astronomical Observatory of Belgrade (ISSN 0373-3742), No. 73, p. 219 - 230 (2002). In: Proceedings of the T
Astronomy and Astrophysics
Astronomy
2
Globular Clusters, Andromeda Galaxy, Extinction Law, Gas-To-Dust Ratio
Scientific paper
We use the Catalogue of M31 Globular Clusters and Globular Clusters Candidates, compiled by Barmby (2000), containing 400 M31 globular clusters and candidates. We reduce this list to a sample of 41 globular clusters that have: (I) UBVRIK photometry, (II) HI data, (III) reliable [Fe/H] and (IV) reliable extinction as determined by us. For determining the intrinsic colours we used the evolutionary synthesis models for globular clusters by Kurth et al. (1999). The mean total-to-selective ratio in M31 in terms of the analytical formula by Cardelli et al. (1989) is found to be RV = 2.7±0.2. Using data from 21 cm observations of M31 we got the HI column densities and obtained N(HI)/AV ~ 9×1020 atoms cm-2mag-1 but varying with the radius, indicating possible supersolar metallicity toward the centre of M31 galaxy.
Savcheva A. S.
Tassev S. V.
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