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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. doi:10.1111/j.1365-2966.2005.09138.x
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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: |
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| Volume: | Vol.361 | ||||
| Number: | No.1 | ||||
| Number of Pages: | 14 | ||||
| Page Range: | pp. 141-154 | ||||
| DOI: | 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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