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Two Mid-Giant Branch Stars in M15

Published online by Cambridge University Press:  12 April 2016

Y-H Chu ,
C. M. Clement ,
H. Sawyer Hogg  and
T. R. Wells
Y-H Chu
Affiliation:
Purple Mountain Observatory, Nanking, China
C. M. Clement
Affiliation:
David Dunlap Observatory, Univ. of Toronto, Toronto M5S 1A7
H. Sawyer Hogg
Affiliation:
David Dunlap Observatory, Univ. of Toronto, Toronto M5S 1A7
T. R. Wells
Affiliation:
David Dunlap Observatory, Univ. of Toronto, Toronto M5S 1A7

Abstract

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High precision photographic photometry indicates that two stars lying on the giant branch in the C-M diagram of M15 are small amplitude (~0.2 mag) variables. The two stars are Kustner 64 and 152. This investigation is based on plates taken with three telescopes: the Dominion Astrophysical Observatory 1.8-metre reflector, the David Dunlap 1.9-metre reflector and the Yunnan 1-metre reflector in China. The existing data is not sufficient for period determination.

Type
Part IV. Population II Cepheids
Information
International Astronomical Union Colloquium , Volume 82: Cepheids: Theory and Observations , 1985 , pp. 264 - 267
Copyright
Copyright © Cambridge University Press 1985

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