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arXiv:astro-ph/0504460 (astro-ph)
[Submitted on 21 Apr 2005]

Title:Cataclysmic variables from a ROSAT/2MASS selection I: Four new intermediate polars

Authors:B.T. Gaensicke, T.R. Marsh, A. Edge, P. Rodriguez-Gil, D. Steeghs, S. Araujo-Betancor, E. Harlaftis, O. Giannakis, S. Pyrzas, L. Morales-Rueda, A. Aungwerojwit
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Abstract: We report the first results from a new search for cataclysmic variables (CVs) using a combined X-ray (ROSAT) / infrared (2MASS) target selection that discriminates against background AGN. Identification spectra were obtained at the Isaac Newton Telescope for a total of 174 targets, leading to the discovery of 12 new CVs. Initially devised to find short-period low-mass-transfer CVs, this selection scheme has been very successful in identifying new intermediate polars. Photometric and spectroscopic follow-up observations identify four of the new CVs as intermediate polars: 1RXSJ063631.9+353537 (Porb~201min, Pspin=1008.3408s or 930.5829), 1RXSJ070407.9+262501 (Porb~250min, Pspin=480.708s), 1RXSJ173021.5-055933 (Porb=925.27min, Pspin=128.0s), and 1RXSJ180340.0+401214 (Porb=160.21min, Pspin=1520.51s). RXJ1730, also a moderately bright hard X-ray source in the INTEGRAL/IBIS Galactic plane survey, resembles the enigmatic AE Aqr. It is likely that its white dwarf is not rotating at the spin equilibrium period, and the system may represent a short-lived phase in CV evolution.
Comments: MNRAS in press, 23 figures. Some figures have been degraded to match the size limitation of ArXiV
Subjects: Astrophysics (astro-ph)
Cite as: arXiv:astro-ph/0504460
  (or arXiv:astro-ph/0504460v1 for this version)
  https://doi.org/10.48550/arXiv.astro-ph/0504460
Journal reference: Mon.Not.Roy.Astron.Soc. 361 (2005) 141-154
Related DOI: https://doi.org/10.1111/j.1365-2966.2005.09138.x

Submission history

From: Boris Gaensicke [view email]
[v1] Thu, 21 Apr 2005 07:52:02 UTC (912 KB)
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