Spectroscopy of Four Cataclysmic Variables with Periods above 7 Hours | Zendy

Christopher S. Peters | Zendy; J. R. Thorstensen | Zendy

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Spectroscopy of Four Cataclysmic Variables with Periods above 7 Hours

Author(s) -

Christopher S. Peters,

J. R. Thorstensen

Publication year - 2005

Publication title -

publications of the astronomical society of the pacific

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.294

H-Index - 172

eISSN - 1538-3873

pISSN - 0004-6280

DOI - 10.1086/497384

Subject(s) - cataclysmic variable star , astrophysics , physics , spectroscopy , radial velocity , stars , polar , brightness , spectral line , roche lobe , astronomy , white dwarf

We present spectroscopy of four cataclysmic variables. Using radial velocitymeasurements, we find orbital periods for the first time. The stars and theirperiods are GY Hya, 0.347230(9) d; SDSS J204448-045929, 1.68(1) d; V392 Hya,0.324952(5) d; and RX J1951.7+3716, 0.492(1) d. We also detect the spectra ofthe secondary stars, estimate their spectral types, and derive distances basedon surface brightness and Roche lobe constraints.Comment: 22 pages, 3 figures, 5 tables, to be published in December 2006 PAS

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