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Cataclysmic variables from a ROSAT/2MASS selection. I, Four new intermediate polars

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Gaensicke, B. T., Marsh, T. R., Edge, A., Rodríguez-Gil, P., Steeghs, D., Araujo-Betancor, S., Harlaftis, E. T., Giannakis, O., Pyrzas, S., Morales-Rueda, L. and Aungwerojwit, A.. (2005) Cataclysmic variables from a ROSAT/2MASS selection. I, Four new intermediate polars. Monthly Notices of the Royal Astronomical Society, Vol.361 (No.1). pp. 141-154. ISSN 0035-8711

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Official URL: http://dx.doi.org/10.1111/j.1365-2966.2005.09138.x

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 active galactic nuclei. 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: 1RXS J063631.9+353537 P(orb)similar or equal to 201 min, P-spin= 1008.3408 s or 930.5829 s), 1RXS J070407.9+262501 (P(orb)similar or equal to 250 min, P-spin= 480.708 s) 1RXS J173021.5-055933 (P-orb= 925.27 min, P-spin= 128.0 s), and 1RXS J180340.0+401214 (P-orb= 160.21 min, P-spin= 1520.51 s). RX J1730, 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.

Item Type:

Journal Article

Subjects:

Q Science > QB Astronomy

Divisions:

Faculty of Science > Physics

Library of Congress Subject Headings (LCSH):

Cataclysmic variable stars

Journal or Publication Title:

Monthly Notices of the Royal Astronomical Society

Publisher:

Wiley

ISSN:

0035-8711

Official Date:

July 2005

Dates:

Date	Event
July 2005	Published

Volume:

Vol.361

Number:

No.1

Number of Pages:

Page Range:

pp. 141-154

Identifier:

10.1111/j.1365-2966.2005.09138.x

Status:

Peer Reviewed

Publication Status:

Published

Access rights to Published version:

Restricted or Subscription Access

Funder:

Particle Physics and Astronomy Research Council (Great Britain) (PPARC), Royal Society (Great Britain), Smithsonian Astrophysical Observatory

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