The Library

Orbital periods of cataclysmic variables identified by the SDSS. VI, The 4.5-h period eclipsing system SDSS J100658.40+233724.4

Tools

Southworth, J. (John), Hickman, R. D. G. (Richard D. G.), Marsh, T. R., Rebassa-Mansergas, A., Gaensicke, B. T. (Boris T.), Copperwheat, C. M. and Rodríguez-Gil, P.. (2009) Orbital periods of cataclysmic variables identified by the SDSS. VI, The 4.5-h period eclipsing system SDSS J100658.40+233724.4. Astronomy & Astrophysics, Vol.507 (No.2). pp. 929-937. ISSN 0004-6361

PDF
WRAP_Southworth_15_orbital_periods_aa12885-09[1].pdf - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (812Kb)

Official URL: http://dx.doi.org/10.1051/0004-6361/200912885

Abstract

We present time-resolved spectroscopy and photometry of SDSS J100658.40+233724.4, which we have discovered to be an eclipsing cataclysmic variable with an orbital period of 0.18591324 days (267.71507 min). The observed velocity amplitude of the secondary star is 276 ± 7 kms−1, which an irradiation correction reduces to 258 ± 12 km s−1. Doppler tomography of emission lines from the infrared calcium triplet supports this measurement. We have modelled the light curve using the lcurve code and Markov Chain
Monte Carlo simulations, finding a mass ratio of 0.51 ± 0.08. From the velocity amplitude and the light curve analysis we find the mass of the white dwarf to be 0.78±0.12 M and the masses and radii of the secondary star to be 0.40±0.10 M and 0.466±0.036 R,respectively. The secondary component is less dense than a normal main sequence star but its properties are in good agreement with
the expected values for a CV of this orbital period. By modelling the spectral energy distribution of the system we find a distance of 676 ± 40 pc and estimate a white dwarf effective temperature of 16 500 ± 2000 K.

Item Type:	Journal Article
Subjects:	Q Science > QB Astronomy
Divisions:	Faculty of Science > Physics
Library of Congress Subject Headings (LCSH):	Cataclysmic variable stars, Eclipsing binaries, Double stars -- Orbits, Double stars -- Masses
Journal or Publication Title:	Astronomy & Astrophysics
Publisher:	EDP Sciences
ISSN:	0004-6361
Official Date:	November 2009
Volume:	Vol.507
Number:	No.2
Number of Pages:	9
Page Range:	pp. 929-937
Identification Number:	10.1051/0004-6361/200912885
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Open Access
Funder:	Science and Technology Facilities Council (Great Britain) (STFC), European Southern Observatory (ESO), Chile. Comisión Nacional de Investigación Científica y Tecnológica (CONICYT)
Grant number:	ST/F002599/1 (STFC), 32080023 (ESO & CONICYT)
References:	Ak, T., Ozkan, M. T., & Mattei, J. A. 2002, A&A, 389, 478 Baptista, R., & Catalán, M. S. 2001, MNRAS, 324, 599 Baptista, R., Catalán, M. S., & Costa, L. 2000, MNRAS, 316, 529 Bergeron, P., Saumon, D., & Wesemael, F. 1995, ApJ, 443, 764 Bertin, E., & Arnouts, S. 1996, A&AS, 117, 393 Beuermann, K. 2006, A&A, 460, 783 Billington, I., Marsh, T. R., & Dhillon, V. S. 1996, MNRAS, 278, 673 Bruch, A. 1992, A&A, 266, 237 Bruch, A. 2000, A&A, 359, 998 Dillon, M., Gänsicke, B. T., Aungwerojwit, A., et al. 2008, MNRAS, 386, 1568 Drake, A. J., Djorgovski, S. G., Mahabal, A., et al. 2009, ApJ, 696, 870 Echevarría, J., de la Fuente, E., & Costero, R. 2007, AJ, 134, 262 Feline, W. J., Dhillon, V. S.,Marsh, T. R.,Watson, C. A., & Littlefair, S. P. 2005, MNRAS, 364, 1158 Fiedler, H., Barwig, H., & Mantel, K. H. 1997, A&A, 327, 173 Gänsicke, B. T., Fried, R. E., Hagen, H.-J., et al. 2000, A&A, 356, L79 Gänsicke, B. T., Araujo-Betancor, S., Hagen, H.-J., et al. 2004, A&A, 418, 265 Gänsicke, B. T., Rodríguez-Gil, P., Marsh, T. R., et al. 2006, MNRAS, 365, 969 Gänsicke, B. T., Dillon, M., Southworth, J., et al. 2009, MNRAS, 397, 2170 Hessman, F. V., Robinson, E. L., Nather, R. E., & Zhang, E.-H. 1984, ApJ, 286, 747 Horne, K. 1986, PASP, 98, 609 Horne, K.,Welsh, W. F., & Wade, R. A. 1993, ApJ, 410, 357 Horne, K., Marsh, T. R., Cheng, F. H., Hubeny, I., & Lanz, T. 1994, ApJ, 426, 294 Knigge, C. 2006, MNRAS, 373, 484 Littlefair, S. P., Dhillon, V. S., Marsh, T. R., et al. 2006, Science, 314, 1578 Littlefair, S. P., Dhillon, V. S., Marsh, T. R., et al. 2008, MNRAS, 388, 1582 Long, K. S., & Gilliland, R. L. 1999, ApJ, 511, 916 Long, K. S., Brammer, G., & Froning, C. S. 2006, ApJ, 648, 541 Marsh, T. R. 1989, PASP, 101, 1032 Marsh, T. R., & Horne, K. 1988, MNRAS, 235, 269 Marsh, T. R., Horne, K., Schlegel, E. M., Honeycutt, R. K., & Kaitchuck, R. H. 1990, ApJ, 364, 637 Martin, D. C., Fanson, J., Schiminovich, D., et al. 2005, ApJ, 619, L1 Naylor, T., Allan, A., & Long, K. S. 2005, MNRAS, 361, 1091 Press, W. H., Teukolsky, S. A., Vetterling, W. T., & Flannery, B. P. 1992, Numerical recipes in FORTRAN 77, The art of scientific computing, 2nd edn. (Cambridge: University Press) Prialnik, D., & Kovetz, A. 1995, ApJ, 445, 789 Pyrzas, S., Gänsicke, B. T., Marsh, T. R., et al. 2009, MNRAS, 394, 978 Rebassa-Mansergas, A., Gänsicke, B. T., Rodríguez-Gil, P., Schreiber, M. R., & Koester, D. 2007, MNRAS, 382, 1377 Ribeiro, T., Baptista, R., Harlaftis, E. T., Dhillon, V. S., & Rutten, R. G. M. 2007, A&A, 474, 213 Schlegel, D. J., Finkbeiner, D. P., & Davis, M. 1998, ApJ, 500, 525 Schneider, D. P., & Young, P. 1980, ApJ, 238, 946 Shafter, A. W. 1983, ApJ, 267, 222 Shafter, A. W., Szkody, P., & Thorstensen, J. R. 1986, ApJ, 308, 765 Sion, E. M., Cheng, F. H., Szkody, P., et al. 1998, ApJ, 496, 449 Smith, D. A., & Dhillon, V. S. 1998, MNRAS, 301, 767 Southworth, J. 2009, MNRAS, 394, 272 Southworth, J., Smalley, B., Maxted, P. F. L., Claret, A., & Etzel, P. B. 2005, MNRAS, 363, 529 Southworth, J., Gänsicke, B. T., Marsh, T. R., et al. 2006, MNRAS, 373, 687 Southworth, J., Gänsicke, B. T., Marsh, T. R., de Martino, D., & Aungwerojwit, A. 2007a, MNRAS, 378, 635 Southworth, J., Marsh, T. R., Gänsicke, B. T., et al. 2007b, MNRAS, 382, 1145 Southworth, J., Gänsicke, B. T., Marsh, T. R., et al. 2008a, MNRAS, 391, 591 Southworth, J., Townsley, D. M., & Gänsicke, B. T. 2008b, MNRAS, 388, 709 Southworth, J., Hinse, T. C. Burgdorf, M. J., et al. 2009a, MNRAS, in press [arXiv:0907:3356] Southworth, J., Hinse, T. C., Jørgensen, U. G., et al. 2009b, MNRAS, 396, 1023 Steeghs, D., Howell, S. B., Knigge, C., et al. 2007, ApJ, 667, 442 Szkody, P., Henden, A., Mannikko, L., et al. 2007, AJ, 134, 185 Szkody, P., Anderson, S. F., Hayden, M., et al. 2009, AJ, 137, 4011 Thoroughgood, T. D., Dhillon, V. S., Watson, C. A., et al. 2004, MNRAS, 353, 1135 Thoroughgood, T. D., Dhillon, V. S., Steeghs, D., et al. 2005, MNRAS, 357, 881 Thorstensen, J. R. 2000, PASP, 112, 1269 Townsley, D. M., & Gänsicke, B. T. 2009, ApJ, 693, 1007 Unda-Sanzana, E., Marsh, T. R., & Morales-Rueda, L. 2006, MNRAS, 369, 805 Urban, J. A., & Sion, E. M. 2006, ApJ, 642, 1029 Wade, R. A., & Horne, K. 1988, ApJ, 324, 411 Wood, M. A., Robertson, J. R., Simpson, J. C., et al. 2005, ApJ, 634, 570
URI:	http://wrap.warwick.ac.uk/id/eprint/3424