Light curves and period changes of type II cepheids in the globular clusters M3 and M5

Katie Rabidoux, Horace A. Smith, Barton J. Pritzl, Wayne Osborn, Charles Kuehn, Jill Randall, R. Lustig, K. Wells, Lisa Taylor, Nathan De Lee, K. Kinemuchi, Aaron Lacluyzé, D. Hartley, C. Greenwood, M. Ingber, M. Ireland, E. Pellegrini, Mary Anderson, Gene Purdum, J. LacyM. Curtis, Jason Smolinski, Stephen Danford

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Light curves in the B, V, and Ic passbands have been obtained for the type II Cepheids V154 in M3 and V42 and V84 in M5. Alternating cycle behavior, similar to that seen among RV Tauri variables, is confirmed for V84. Old and new observations, spanning more than a century, show that V154 has increased in period while V42 has decreased in period. V84, on the other hand, has shown large, erratic changes in period that do not appear to reflect the long-term evolution of V84 through the Hertzsprung-Russel diagram.
Original languageEnglish
Pages (from-to)2300-2307
Number of pages8
JournalThe Astronomical journal
Volume139
Issue number6
DOIs
Publication statusPublished - 2010
Externally publishedYes

Keywords

  • Globular clusters: individual (NGC 5272, NGC 5904)
  • Stars: variables: Cepheids

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