Planets in Stellar Clusters Extensive Search. III. A search for transiting planets in the metal-rich open cluster NGC 6791
Astrophysics, abstract
astro-ph/0501145
From: B. J. Mochejska [view email]
Date: Sun, 9 Jan 2005 18:57:28 GMT (272kb)
Planets in Stellar Clusters Extensive Search. III. A search for
transiting planets in the metal-rich open cluster NGC 6791
Authors:
B. J. Mochejska,
K. Z. Stanek,
D. D. Sasselov,
A. H. Szentgyorgyi,
G. A. Bakos,
J. Devor,
V. Hradecky,
D. P. Marrone,
J. N. Winn,
M. Zaldarriaga
Comments: 18 pages LaTeX, including 11 figures and 6 tables, submitted to
Astronomical Journal. Version with full resolution figures available through
ftp at this ftp URL
We have undertaken a long-term project, Planets in Stellar Clusters Extensive
Search (PISCES), to search for transiting planets in open clusters. In this
paper we present the results for NGC 6791 — a very old, populous, metal rich
cluster. We have monitored the cluster for over 300 hours, spread over 84
nights. We have not detected any good transiting planet candidates. Given the
photometric precision and temporal coverage of our observations, and current
best estimates for the frequency and radii of short-period planets, the
expected number of detectable transiting planets in our sample is 1.7. We have
discovered 14 new variable stars in the cluster, most of which are eclipsing
binaries, and present high precision light curves, spanning two years, for
these new variables and also the previously known variables.
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