Photometry of M31 globular cluster candidates (Ma+, 2006)

Details Photometry of M31 globular cluster candidates (Ma+, 2006) Photometry of M31 globular cluster candidates (Ma+, 2006)

Nov 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005ycat..34490143m&link_type=abstract

VizieR On-line Data Catalog: J/A+A/449/143. Originally published in: 2006A&A...449..143M

Computer Science

Clusters: Globular, Energy Distributions

Scientific paper

This paper presents accurate spectral energy distributions (SEDs) of 16 M31 globular clusters (GCs) confirmed by spectroscopy and/or high spatial-resolution imaging, as well as 30 M31 globular cluster candidates detected by Mochejska et al., Cat. J/AcA/48/455 (1998). Most of these candidates have mV>18, deeper than previous searches, and these candidates have not yet been confirmed to be globular clusters. The SEDs of these clusters and candidates are obtained as part of the BATC Multicolor Survey of the Sky, in which the spectrophotometrically-calibrated CCD images of M31 in 13 intermediate-band filters from 4000 to 10000{AA} were observed. These filters are specifically designed to exclude most of the bright and variable night-sky emission lines including the OH forest. In comparison to the SEDs of true GCs, we find that some of the candidate objects are not GCs in M31. SED fits show that theoretical simple stellar population (SSP) models can fit the true GCs very well. We estimate the ages of these GCs by comparing with SSP models.
(3 data files).

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