Newly Discovered Cataclysmic Variables from the INT/WFC Photometric H alpha Survey of the Northern Galactic Plane

Abstract

We report the discovery of 11 new cataclysmic variable (CV) candidates by the Isaac Newton Telescope (INT) Photometric H alpha Survey of the northern Galactic plane (IPHAS). Three of the systems have been the subject of further follow-up observations. For the CV candidates IPHAS J013031.90+622132.4 and IPHAS J051814.34+294113.2, time-resolved optical spectroscopy has been obtained and radial-velocity measurements of the H alpha emission-line have been used to estimate their orbital periods. A third CV candidate (IPHAS J062746.41+ 014811.3) was observed photometrically and found to be eclipsing. All three systems have orbital periods above the CV period-gap of 2-3 h. We also highlight one other system, IPHAS J025827.88+635234.9, whose spectrum distinguishes it as a likely high luminosity object with unusual C and N abundances.

13 pages, 12 figures, accepted by and to be published in MNRAS

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Cited by in corpus (13)

• The Second Data Release of the INT Photometric H-Alpha Survey of the Northern Galactic Plane (IPHAS DR2)
• The IPHAS Catalogue of Halpha Emission Line Sources in the Northern Galactic Plane
• An Halpha-selected sample of cataclysmic variables -- I. Observations of newly discovered systems
• An Halpha-selected sample of cataclysmic variables -- II. Implications for CV evolution
• Discovery of 2716 hot emission-line stars from LAMOST DR5
• A Step towards Unveiling the Nature of Three Cataclysmic Variables: LS Cam, V902 Mon, and SWIFT J0746.3-1608
• Spectroscopic Studies of 30 Short-period Cataclysmic Variable Stars, and Remarks on the Evolution and Population of Similar Objects
• Cataclysmic Variables in the SUPERBLINK Proper Motion Survey
• Candidate Hα emission and absorption line sources in the Galactic Bulge Survey
• Mapping H$\alpha$-Excess Candidate Point Sources in the Southern Hemisphere Using S-PLUS Data
• The orbital period of the V Sge star candidate QU Carinae
• Discovery of deep eclipses in the cataclysmic variable IPHAS J013031.89+622132.3
• MIRIS Paα Galactic Plane Survey. II. The Catalog of Paα Emission-line Sources