UBVI photometry of NGC 45 star clusters (Mora+, 2007)

Details UBVI photometry of NGC 45 star clusters (Mora+, 2007) UBVI photometry of NGC 45 star clusters (Mora+, 2007)

Sep 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ycat..34640495m&link_type=abstract

VizieR On-line Data Catalog: J/A+A/464/495. Originally published in: 2007A&A...464..495M

Computer Science

Scientific paper

Star clusters are present in almost all types of galaxies. Here we investigate the star cluster population in the low-luminosity, unperturbed spiral galaxy NGC 45, which is located in the nearby Sculptor group. Both the old (globular) and young star-cluster populations are studied. Previous ground-based observations have suggested that NGC 45 has few if any "massive" young star clusters. We aim to study the population of lower-mass "open" star clusters and also identify old globular clusters that could not be distinguished from foreground stars in the ground-based data. Star clusters were identified using UBVI imaging from the Advanced Camera for Surveys (ACS) and the Wide Field Planetary Camera 2 (WFPC2) on board the Hubble Space Telescope. From broad band colors and comparison with simple stellar population (SSP) models assuming a fixed metallicity, we derived the age, mass, and extinction. We also measured the radius for each star cluster candidate.
(1 data file).

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