Intermediate-Age Clusters in a Field Containing M31 and M32 Stars

Details Intermediate-Age Clusters in a Field Containing M31 and M32 Stars Intermediate-Age Clusters in a Field Containing M31 and M32 Stars

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aj....138.1985r&link_type=abstract

The Astronomical Journal, Volume 138, Issue 6, pp. 1985-1989 (2009).

Astronomy and Astrophysics

Astronomy

Galaxies: Individual: Ngc 221 Ngc 224, Galaxies: Star Clusters, Galaxies: Stellar Content, Local Group, Open Clusters And Associations: Individual: Newly Discovered Clusters

Scientific paper

Hubble Space Telescope/Advanced Camera for Surveys fields toward M31 and M32 were examined for the presence of possible star clusters. On the basis of stellar photometry, two intermediate-age clusters were found in the field that contains both M31 and M32 stars. One is approximately 200 Myr of age with a mass ~400 M sun, and the other is 1 Gyr old with mass ~8 × 104 M sun. Several other cluster candidates are identified, but their stellar populations are more similar to the field: old and slightly metal-poor.

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