Theoretical interpretations of anomalous Cepheid pulsations

Conference · Tue Jan 01 00:00:00 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 Laboratory (LANL), Los Alamos, NM (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6251162
• Report Number(s): LA-UR-85-4109; CONF-8510265-2; ON: DE86003652
• Resource Relation: Journal Volume: 254; Conference: 4. Cambridge workshop on cool stars, stellar systems, and the sun, Santa Fe, NM, USA, 16 Oct 1985; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

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