Astronomy and Astrophysics – Astronomy
Scientific paper
May 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.1608j&link_type=abstract
American Astronomical Society Meeting 210, #16.08; Bulletin of the American Astronomical Society, Vol. 39, p.117
Astronomy and Astrophysics
Astronomy
Scientific paper
We present the results of a photometric monitoring program in the young (3-5 Myr) open cluster NGC 2362. Observations were carried out at the 0.8-m telescope at McDonald Observatory over 8 nights between 18 January 2006 and 25 January 2006. The cluster was imaged multiple times a night, allowing us to be sensitive to periods between 0 and 6 days. The periodic variability of these stars presumably results from the rotation modulation of starlight by stellar spots. One hundred thirty-one images were obtained during this time period through a Bessell I-band filter. Hamilton et al. (2006) have determined the rotation periods of 67 stars in this cluster; however, they were only sensitive to periods longer than 2 days. They found a period distribution similar to that of the Orion Nebula Cluster (age 1 Myr) and NGC 2264 (age 3 Myr), but with a “long period” peak at 3.47 days. We present the results of our periodogram analysis of the McDonald data and compare to those presented by Hamilton et al. (2006). These results will be discussed in the context of rotation period evolution of young stars.
Hamilton Carla M.
Jekielek Kristin
Johns-Krull Christopher M.
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