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RR Lyrae Stars and Anomalous Cepheids in the Draco Dwarf Spheroidal Galaxy

Published online by Cambridge University Press:  12 April 2016

K. Kinemuchi ,
H.A. Smith ,
A.P. LaCluyzé ,
C.L. Clark ,
H.C. Harris ,
N. Silbermann  and
L.A. Snyder
K. Kinemuchi
Affiliation:
Michigan State University, Physics & Astronomy Department, East Lansing, MI 48824 USA
H.A. Smith
Affiliation:
Michigan State University, Physics & Astronomy Department, East Lansing, MI 48824 USA
A.P. LaCluyzé
Affiliation:
Michigan State University, Physics & Astronomy Department, East Lansing, MI 48824 USA
C.L. Clark
Affiliation:
Michigan State University, Physics & Astronomy Department, East Lansing, MI 48824 USA
H.C. Harris
Affiliation:
United States Naval Observatory, P.O. Box 1149, Flagstaff, AZ 86002-1149 USA
N. Silbermann
Affiliation:
SIRTF Science Center, California Institute of Technology, Mail Code 220-6, 1200 East California Boulevard, Pasadena, CA 91125 USA
L.A. Snyder
Affiliation:
DePauw University, Physics & Astronomy Department, 602 South College Avenue, Greencastle, IN 46135 USA

Abstract

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We present new results on RR Lyrae stars and anomalous Cepheids in the Draco dwarf spheroidal galaxy. We have increased the number of double-mode RR Lyrae stars and found three new anomalous Cepheids. With period-magnitude and period-amplitude diagrams, we discuss the Oosterhoff classification of Draco. Contradictory results were found in that Draco appears to contain both Oosterhoff I and II type RR Lyrae populations.

Information

Type
Part 1.3. Stellar Pulsation and the Distance Scale
Information
International Astronomical Union Colloquium , Volume 185: Radial and Nonradial Pulsations as Probes of Stellar Physics , 2002 , pp. 130 - 133
Copyright
Copyright © Astronomical Society of the Pacific 2002

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