Theoretical interpretations of anomalous Cepheid pulsations

Conference · Tue Jan 01 04:00:00 EST 1985

DOI:https://doi.org/10.1007/3-540-16763-3_219· OSTI ID:6251162

Cox, A N; Proffett, C R

Anomalous Cepheids are variable stars found in metal poor systems, with a low mass main sequence turnoff, that are significantly brighter (0.4 to 1.0 magnitude) than the RR Lyrae variables in the same system. They do have similar periods and effective temperatures. In dwarf spheroidal systems such as Draco, Leo II, Sculptor and Ursae Major, they are quite common, but they are rare in globular clusters. Only one is well known in the globular cluster NGC 5466 (Zinn and Dahn, 1976), but there are other possible candidates in M15 and omega Cen. Similar objects are found in the SMC, but none are seen in the LMC.

• Research Organization: Los Alamos National Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6251162
• Report Number(s): LA-UR-85-4109; CONF-8510265-2; ON: DE86003652
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CEPHEIDS
DATA
INFORMATION
LUMINOSITY
MATHEMATICAL MODELS
NUMERICAL DATA
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
PULSATING VARIABLE STARS
PULSATIONS
STAR MODELS
STARS
THEORETICAL DATA
TIME DEPENDENCE
VARIABLE STARS
VARIATIONS