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Post common envelope binaries from the SDSS VI. SDSS J120615.73+510047.0 : a new low accretion rate magnetic binary

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Schwope, A. D. (Axel D.), Gomez-Moran, A. Nebot, Schreiber, Matthias R. and Gaensicke, B. T. (Boris T.). (2009) Post common envelope binaries from the SDSS VI. SDSS J120615.73+510047.0 : a new low accretion rate magnetic binary. Astronomy & Astrophysics, Vol.50 (No.2). pp. 867-872. ISSN 0004-6361

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Official URL: http://dx.doi.org/10.1051/0004-6361/200911699

Abstract

We report the discovery of the ninth pre-polar consisting of a late-type ZAMS secondary and a magnetic white dwarf. The white dwarf accretes at an extreme low rate, $\dot{M} \sim 10^$ $M_\odot$ yr-1, from the wind of the companion donor star. The source was found in our systematic search for WD/MS binaries within SDSS/SEGUE. Based on seven Sloan spectra we estimate a binary period of ~200, 230, or 270 min. The UV to IR spectral energy distribution was decomposed into a dM3-dM4 ZAMS secondary and a cool white dwarf, ~9000 K, which consistently imply a distance between 360 and 420 pc. The optical spectrum displays one pronounced cyclotron hump, likely originating from a low-temperature plasma, ~1 keV, in a field of 108 MG. We comment on the evolutionary link between polars and pre-polars.

Item Type:	Journal Article
Subjects:	Q Science > QB Astronomy Q Science > QC Physics
Divisions:	Faculty of Science > Physics
Library of Congress Subject Headings (LCSH):	Sloan Digital Sky Survey, Accretion (Astrophysics) -- Research, Double stars -- Research, Spectral energy distribution, Low temperature plasmas
Journal or Publication Title:	Astronomy & Astrophysics
Publisher:	EDP Sciences
ISSN:	0004-6361
Official Date:	3 June 2009
Volume:	Vol.50
Number:	No.2
Number of Pages:	6
Page Range:	pp. 867-872
Identification Number:	10.1051/0004-6361/200911699
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Open Access
Funder:	Deutsche Forschungsanstalt für Luft- und Raumfahrt (DLR)
Grant number:	50OR0404 (DLR)
References:	# Abazajian, K., Adelman-McCarthy, J., Agüeros, M., et al. 2009, ApJS, 182, 543 [NASA ADS] [CrossRef] # Araujo-Betancor, S., Gänsicke, B. T., Long, K. S., et al. 2005, ApJ, 622, 589 [NASA ADS] [CrossRef] # Cropper, M. 1990, Space Sci. Rev., 54, 195 [NASA ADS] [CrossRef] # Fukugita, M., Ichikawa, T., Gunn, J. E., et al. 1996, AJ, 111, 1748 [NASA ADS] [CrossRef] # Gunn, J. E., Carr, M., Rockosi, C., et al. 1998, AJ, 116, 3040 [NASA ADS] [CrossRef] # Gunn, J. E., Siegmund, W. A., Mannery, E. J., et al. 2006, AJ, 131, 2332 [NASA ADS] [CrossRef] # Hessman, F. V., Gänsicke, B. T., & Mattei, J. A. 2000, A&A, 361, 952 [NASA ADS] # Hogg, D. W., Finkbeiner, D. P., Schlegel, D. J., & Gunn, J. E. 2001, AJ, 122, 2129 [NASA ADS] [CrossRef] # Ivezic, Z., Lupton, R. H., Schlegel, D., et al. 2004, Astron. Nachr., 325, 583 [NASA ADS] [CrossRef] # Leggett, S. K., Allard, F., Dahn, C., et al. 2000, ApJ, 535, 965 [NASA ADS] [CrossRef] # Liebert, J., Bergeron, P., & Holberg, J. B. 2003, AJ, 125, 348 [NASA ADS] [CrossRef] # Liebert, J., Wickramsinghe, D. T., Schmidt, G. D., et al. 2005, AJ, 129, 2376 [NASA ADS] [CrossRef] # Marsh, T. R. 2000, New Astron. Rev., 44, 119 [NASA ADS] [CrossRef] # Morales-Rueda, L., Marsh, T. R., Maxted, P. F. L., et al. 2005, MNRAS, 359, 648 [NASA ADS] [CrossRef] # Nebot Gómez-Morán, A., Schwope, A. D., Schreiber, M. R., et al. 2009, A&A, 495, 561 [NASA ADS] [CrossRef] [EDP Sciences] # Pier, J. R., Munn, J. A., Hindsley, R. B., et al. 2003, AJ, 125, 1559 [NASA ADS] [CrossRef] # Rebassa-Mansergas, A., Gänsicke, B. T., Rodríguez-Gil, P., Schreiber, M. R., & Koester, D. 2007, MNRAS, 382, 1377 [NASA ADS] # Reimers, D., & Hagen, H.-J. 2000, A&A, 358, L45 [NASA ADS] # Reimers, D., Hagen, H.-J., & Hopp, U. 1999, A&A, 343, 157 [NASA ADS] # Ritter, H., & Kolb, U. 2003, A&A, 404, 301 [NASA ADS] [CrossRef] [EDP Sciences] # Schmidt, G. D., Szkody, P., Vanlandingham, K. M., et al. 2005, ApJ, 630, 1037 [NASA ADS] [CrossRef] # Schmidt, G. D., Szkody, P., Henden, A., et al. 2007, ApJ, 654, 521 [NASA ADS] [CrossRef] # Schreiber, M., Nebot Gomez-Moran, A., Schwope, A., & Gaensicke, B. 2009, A&A , in prep. # Schreiber, M. R., & Gänsicke, B. T. 2003, A&A, 406, 305 [NASA ADS] [CrossRef] [EDP Sciences] # Schreiber, M. R., Nebot Gomez-Moran, A., & Schwope, A. D. 2007, in 15th European Workshop on White Dwarfs, ed. R. Napiwotzki, & M. R. Burleigh, ASP Conf. Ser., 372, 459 # Schwarz, R., Schwope, A. D., & Staude, A. 2001, A&A, 374, 189 [NASA ADS] [CrossRef] [EDP Sciences] # Schwope, A. D. 1990, in Rev. Mod. Astron. 3, ed. G. Klare, 44 # Schwope, A. D., Schwarz, R., & Greiner, J. 1999, A&A, 348, 861 [NASA ADS] # Schwope, A. D., Brunner, H., Buckley, D., et al. 2002a, A&A, 396, 895 [NASA ADS] [CrossRef] [EDP Sciences] # Schwope, A. D., Brunner, H., Hambaryan, V., & Schwarz, R. 2002b, in The Physics of Cataclysmic Variables and Related Objects, ed. B. T. Gänsicke, K. Beuermann, & K. Reinsch, ASP Conf. Ser., 261, 102 # Schwope, A. D., Staude, A., Koester, D., & Vogel, J. 2007, A&A, 469, 1027 [NASA ADS] [CrossRef] [EDP Sciences] # Shimansky, V., Sakhibullin, N. A., Bikmaev, I., et al. 2006, A&A, 456, 1069 [NASA ADS] [CrossRef] [EDP Sciences] # Silvestri, N. M., Lemagie, M. P., Hawley, S. L., et al. 2007, AJ, 134, 741 [NASA ADS] [CrossRef] # Smith, J. A., Tucker, D. L., Kent, S., et al. 2002, AJ, 123, 2121 [NASA ADS] [CrossRef] # Staude, A., Schwope, A. D., & Schwarz, R. 2001, A&A, 374, 588 [NASA ADS] [CrossRef] [EDP Sciences] # Stoughton, C., Lupton, R. H., Bernardi, M., etal. 2002, AJ, 123, 485 [NASA ADS] [CrossRef] # Tout, C. A., Wickramasinghe, D. T., Liebert, J., Ferrario, L., & Pringle, J. E. 2008, MNRAS, 387, 897 [NASA ADS] [CrossRef] # Townsley, D. M., & Gänsicke, B. T. 2009, ApJ, 693, 1007 [NASA ADS] [CrossRef] # Tucker, D. L., Kent, S., Richmond, M. W., et al. 2006, Astron. Nachr., 327, 821 [NASA ADS] [CrossRef] # Vogel, J., Schwope, A. D., & Gänsicke, B. T. 2007, A&A, 464, 647 [NASA ADS] [CrossRef] [EDP Sciences] # Webbink, R. F., & Wickramasinghe, D. T. 2005, in The Astrophysics of Cataclysmic Variables and Related Objects, ed. J.-M. Hameury, & J.-P. Lasota, ASP Conf. Ser. 330, 137 # Wickramasinghe, D. T., & Wu, K. 1994, MNRAS, 266, L1 [NASA ADS] # Yanny, B., Rockosi, C., Newberg, H. J., et al. 2009, AJ, 137, 4377 [NASA ADS] [CrossRef] # York, D. G., Adelman, J., Anderson, Jr., J. E., et al. 2000, AJ, 120, 1579 [NASA ADS] [CrossRef]
URI:	http://wrap.warwick.ac.uk/id/eprint/2208