Planets in stellar clusters extensive search. V. Search for planets and identification of 18 new variable stars in the old open cluster NGC 188

B. J. Mochejska, K. Z. Stanek, D. D. Sasselov, A. H. Szentgyorgyi, R. L. Cooper, R. C. Hickox, V. Hradecky, D. P. Marrone, J. N. Winn, A. Schwarzenberg-Czerny

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

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 188, an old, rather populous cluster. We have monitored the cluster for more than 87 hours, spread over 45 nights. We have not detected any good transiting planet candidates. We have discovered 18 new variable stars in the cluster, bringing the total number of identified variables to 28, and present for them high precision light curves, spanning 15 months.

Original languageEnglish (US)
Pages (from-to)263-278
Number of pages16
JournalActa Astronomica
Volume58
Issue number3
StatePublished - Nov 19 2008
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Keywords

  • Binaries: eclipsing
  • Hertzsprung-Russel (HR) and C-M diagrams
  • Novae, cataclysmic variables
  • Planetary systems
  • Stars: variables: general

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