Erupting Dwarf Novae in the Large Magellanic Cloud
Author(s) -
Michael M. Shara,
Sasha Hinkley,
David Zurek
Publication year - 2003
Publication title -
the astronomical journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.61
H-Index - 271
eISSN - 1538-3881
pISSN - 0004-6256
DOI - 10.1086/379307
Subject(s) - physics , astrophysics , large magellanic cloud , dwarf nova , observatory , stars , astronomy , galaxy , dwarf galaxy , cataclysmic variable star , white dwarf
We report the first likely detections of erupting Dwarf Novae (DN) in anexternal galaxy: the Large Magellanic Cloud. Six candidates were isolated fromapproximately a million stars observed every second night over 11 nights withthe CTIO 8K x 8K Mosaic2 CCD imager. Artificial dwarf nova and completenesstests suggest that we are seeing only the brightest of the LMC DN, probably SSCygni-like CVs, but possibly SU UMa-type cataclysmics undergoingsuperoutbursts. We derive crude but useful limits on the LMC DN surfacedensity, and on the number of DN in the LMC. Many thousands of cataclysmicvariables in the Magellanic Clouds can be discovered and characterized with 8meter class telescopes.Comment: Accepted for publication in AJ, 28 pages, 9 figures total, Figures 1 and 8 are supplied separately in jpeg forma
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