RR LYRAE VARIABLE-STARS - PULSATIONAL CONSTRAINTS RELEVANT TO THE OOSTERHOFF CONTROVERSY

被引：0

作者：

BONO, G

CAPUTO, F

CASTELLANI, V

MARCONI, M

机构：

[1] IST ASTROFIS SPAZIALE,I-00044 FRASCATI,ITALY

[2] UNIV PISA,DIPARTIMENTO FIS,I-56100 PISA,ITALY

来源：

ASTROPHYSICAL JOURNAL | 1995年 / 448卷 / 02期

关键词：

GLOBULAR CLUSTERS; INDIVIDUAL; (M3; M15); STARS; EVOLUTION; HORIZONTAL-BRANCH; OSCILLATIONS; VARIABLES; OTHER;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A solution to the old Oosterhoff controversy is proposed on the basis of a new theoretical pulsational scenario concerning RR Lyrae cluster variables (Bone and coworkers). We show that the observed constancy of the lowest pulsation period in both Oosterhoff type I and Oosterhoff type II prototypes (M3, M15) can be easily reproduced only by assuming the canonical evolutionary horizontal-branch luminosity levels of these Galactic globular clusters and therefore by rejecting the Sandage period-shift effect (SPSE).

引用

页码：L115 / L117

页数：3

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