TY - JOUR
T1 - Light curves and period changes of type II cepheids in the globular clusters M3 and M5
AU - Rabidoux, Katie
AU - Smith, Horace A.
AU - Pritzl, Barton J.
AU - Osborn, Wayne
AU - Kuehn, Charles
AU - Randall, Jill
AU - Lustig, R.
AU - Wells, K.
AU - Taylor, Lisa
AU - De Lee, Nathan
AU - Kinemuchi, K.
AU - Lacluyzé, Aaron
AU - Hartley, D.
AU - Greenwood, C.
AU - Ingber, M.
AU - Ireland, M.
AU - Pellegrini, E.
AU - Anderson, Mary
AU - Purdum, Gene
AU - Lacy, J.
AU - Curtis, M.
AU - Smolinski, Jason
AU - Danford, Stephen
PY - 2010
Y1 - 2010
N2 - 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.
AB - 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.
KW - Globular clusters: individual (NGC 5272, NGC 5904)
KW - Stars: variables: Cepheids
UR - http://www.scopus.com/inward/record.url?scp=77951929574&partnerID=8YFLogxK
U2 - 10.1088/0004-6256/139/6/2300
DO - 10.1088/0004-6256/139/6/2300
M3 - Article
SN - 0004-6256
VL - 139
SP - 2300
EP - 2307
JO - Astronomical Journal
JF - Astronomical Journal
IS - 6
ER -