Spectroscopy of Four Cataclysmic Variables with Periods above 7 Hours

2005/11/15 by Christopher S. Peters, J. R. Thorstensen, John R. Thorstensen · 4 citations
Physics and Astronomy · #Astrophysical Phenomena and Observations #Gamma-ray bursts and supernovae #Stellar, planetary, and galactic studies #astro-ph

paper · pdf · doi:10.1086/497384

22 pages, 3 figures, 5 tables, to be published in December 2006 PASP

arxiv created 2005/11/15 · openalex publication_date 2005/12/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30

Abstract

We present spectroscopy of four cataclysmic variables. Using radial velocity measurements, we find orbital periods P orb for the first time: for GY Hya, 0.347230(9) days, for SDSS J204448−045929, 1.68(1) days, for V392 Hya, 0.324952(5) days, and for RX J1951.7+3716, 0.492(1) days. We also detect the spectra of the secondary stars, estimate their spectral types, and derive distances based on surface brightness and Roche lobe constraints.

Citations

• UBVRI passbands

Cited by

• Photometry of the long period dwarf nova GY Hya
• Robust Models for Phase Shifts in Accreting Binary Stars
• NSV 1907 - A new eclipsing, nova-like cataclysmic variable
• The Unusual Cataclysmic Binary Star RBS 0490 and the Space Density of Cataclysmic Variables1