Stellar Variability in the Young, Metal Rich Open Cluster NGC 2301

Details Stellar Variability in the Young, Metal Rich Open Cluster NGC 2301 Stellar Variability in the Young, Metal Rich Open Cluster NGC 2301

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...205.1406v&link_type=abstract

American Astronomical Society Meeting 205, #14.06; Bulletin of the American Astronomical Society, Vol. 36, p.1361

Astronomy and Astrophysics

Astronomy

Scientific paper

Using an Orthogonal Transfer CCD camera (OPTIC), we observed the young, metal rich open cluster NCG 2301 over a 14 night period in Feb. 2004. Six adjacent fields centered on the cluster were observed in sequence each night with a field repeat cadence of about 12 minutes. Our photometric precision was near 1-2 mmag for the top 5 magnitudes of dynamic range of the detector, a vast improvement over normal CCD observations. Using a reduced chi-squared of greater than three as our determining variability statistic, we find that 56% of all our point sources are variable. Of these variables, 64% are periodic (at a 99% confidence level). Details on this variability in terms of stellar type, cluster location, etc. will be presented and discussed. Partial support of this research was provided by the NSF.

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