Variable stars in Fornax dwarf spheroidal galaxy

We present the first results of a variable star search in the field and in the globular clusters of the Fornax dwarf spheroidal galaxy. Variable stars were identified using the Image Subtraction Technique (Alard 2000) on time-series data obtained with the ESO 2.2 m and the Magellan 6.5 m telescopes....

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Hauptverfasser:	Greco, C, Clementini, G, Held, E. V, Poretti, E, Catelan, M, Dell'Arciprete, L, Gullieuszik, M, Maio, M, Rizzi, L, Smith, H. A, Pritzl, B. J, Rest, A, De Lee, N
Format:	Artikel
Sprache:	eng
Schlagworte:	Physics - Astrophysics of Galaxies Physics - Cosmology and Nongalactic Astrophysics Physics - Earth and Planetary Astrophysics Physics - High Energy Astrophysical Phenomena Physics - Instrumentation and Methods for Astrophysics Physics - Solar and Stellar Astrophysics
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Beschreibung
Zusammenfassung:	We present the first results of a variable star search in the field and in the globular clusters of the Fornax dwarf spheroidal galaxy. Variable stars were identified using the Image Subtraction Technique (Alard 2000) on time-series data obtained with the ESO 2.2 m and the Magellan 6.5 m telescopes. The variable star sample includes RR Lyrae stars, Dwarf Cepheids and Anomalous Cepheids. The pulsation properties (namely: periods, light curves, period-amplitude relations and classification in Oosterhoff types) of Fornax variables from the present study are discussed in some detail.
DOI:	10.48550/arxiv.astro-ph/0507244