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

(2) U. S. Naval Observatory; (3) SIRTF Science Center; (4) DePauw University); A. LaCluyze (1); C. L. Clark (1); H. A. Smith (1); H. C. Harris (2); K. Kinemuchi (1); L. A. Snyder (4) ((1) Michigan State University; N. Silbermann (3)

arxiv: astro-ph/0203261 · v1 · submitted 2002-03-16 · 🌌 astro-ph

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

K. Kinemuchi (1) , H. A. Smith (1) , A. LaCluyze (1) , C. L. Clark (1) , H. C. Harris (2) , N. Silbermann (3) , L. A. Snyder (4) ((1) Michigan State University , (2) U. S. Naval Observatory

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(3) SIRTF Science Center (4) DePauw University)

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keywords dracolyraeanomalouscepheidsstarsdwarffoundgalaxy

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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.

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

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