The Variable Stars Of The Draco Dwarf Spheroidal Glaxay Revisited PDF Download
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Total Pages | : 20 |
Release | : 2008 |
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Download The Variable Stars of the DRACO DWARF Spheroidal Glaxay: Revisited Book in PDF, ePub and Kindle
We present a CCD survey of variable stars in the Draco dwarf spheroidal galaxy. This survey, which has the largest areal coverage since the original variable star survey by Baade & Swope, includes photometry for 270 RR Lyrae (RRL) stars, 9 anomalous Cepheids (ACs), 2 eclipsing binaries, and 12 slow, irregular red variables, as well as 30 background QSOs. Twenty-six probable double-mode RRL starswere identified. Observed parameters, including mean V and I magnitudes, V amplitudes, and periods, have been derived. Photometric metallicities of the ab-type RRL stars were calculated according to the method of Jurcsik & Kovacs, yielding a mean metallicity of [Fe/H] = 2.19 0.03. Thewell-known Oosterhoff intermediate nature of the RRL stars in Draco is reconfirmed, although the double-mode RRL stars, with one exception, have properties similar to those found in Oosterhoff type II globular clusters. The period luminosity relation of the ACs is rediscussed with the addition of the new Draco ACs.
Author | : S. L. Th. J. van Agt |
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Total Pages | : 40 |
Release | : 1978 |
Genre | : Galaxies |
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Download The Sculptor Dwarf Spheroidal Galaxy: Discovery and identification of variable stars Book in PDF, ePub and Kindle
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Total Pages | : 1254 |
Release | : 2008 |
Genre | : Astronomy |
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Download The Astronomical Journal Book in PDF, ePub and Kindle
Author | : Peter Brailey Stetson |
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Total Pages | : 526 |
Release | : 1979 |
Genre | : Galaxies |
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Download The Dwarf Spheroidal Galaxy in Draco Book in PDF, ePub and Kindle
Author | : Filippina Caputo |
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Total Pages | : |
Release | : 1971 |
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Download On the Evolutionary Stage of Stars in the Draco Dwarf Galaxy Book in PDF, ePub and Kindle
Author | : Matthew D. Lehnert |
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Total Pages | : 13 |
Release | : 1992 |
Genre | : Red giants |
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Download Abundances for Giant Stars in the Draco Dwarf Galaxy Book in PDF, ePub and Kindle
Author | : Claus Gössl |
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Total Pages | : 178 |
Release | : 2007 |
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Download Finding Cepheid Variable Stars in Northern Dwarf Galaxies of the Local Group Book in PDF, ePub and Kindle
Author | : Lara Baldacci |
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Total Pages | : 107 |
Release | : 2004* |
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Download Populations of Variable Stars in the Dwarf Irregular Galaxy NGC6822 Book in PDF, ePub and Kindle
Author | : Steven Leonard Theodoor Jozef Agt |
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Total Pages | : 55 |
Release | : 1968 |
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Download Magnitudes, Phases and Light-curves of Variable Stars in the Central Region of the Ursa Minor Dwarf Galaxy Book in PDF, ePub and Kindle
Author | : S. L. Th. J. van Agt |
Publisher | : |
Total Pages | : |
Release | : 1978 |
Genre | : Galaxies |
ISBN | : |
Download The Sculptor Dwarf Spheroidal Galaxy Book in PDF, ePub and Kindle