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

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

2002-03-16

arxiv.org/abs/astro-ph/0203261v1

Astronomy and Astrophysics

Astrophysics

4 pages, 2 figures, to appear in the proceedings of IAU 185 Colloquium on "Radial and Nonradial Pulsations as Probes of Stella

Scientific paper

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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