Post-common envelope binaries from SDSS – III. Seven new orbital periods
Corresponding Author
A. Rebassa-Mansergas
Department of Physics, University of Warwick, Coventry CV4 7AL
E-mail: [email protected]Search for more papers by this authorB. T. Gänsicke
Department of Physics, University of Warwick, Coventry CV4 7AL
Search for more papers by this authorM. R. Schreiber
Departamento de Física y Astronomía, Universidad de Valparaíso, Avenida Gran Bretana 1111, Valparaíso, Chile
Search for more papers by this authorJ. Southworth
Department of Physics, University of Warwick, Coventry CV4 7AL
Search for more papers by this authorA. D. Schwope
Astrophysikalisches Inst. Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany
Search for more papers by this authorA. Nebot Gomez-Moran
Astrophysikalisches Inst. Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany
Search for more papers by this authorA. Aungwerojwit
Department of Physics, University of Warwick, Coventry CV4 7AL
Department of Physics, Faculty of Science, Naresuan University, Phitsanulok 65000, Thailand
Search for more papers by this authorP. Rodríguez-Gil
Isaac Newton Group of Telescopes, Apdo. de Correos 321, E-38700, Santa Cruz de La Palma, Spain
Instituto de Astrofísica de Canarias, Vía Láctea, s/n, La Laguna, E-38205 Tenerife, Spain
Search for more papers by this authorV. Karamanavis
Department of Physics, Section of Astrophysics, Astronomy & Mechanics, University of Thessaloniki, 541 24 Thessaloniki, Greece
Search for more papers by this authorM. Krumpe
Astrophysikalisches Inst. Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany
Search for more papers by this authorE. Tremou
Department of Physics, Section of Astrophysics, Astronomy & Mechanics, University of Thessaloniki, 541 24 Thessaloniki, Greece
Search for more papers by this authorR. Schwarz
Astrophysikalisches Inst. Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany
Search for more papers by this authorA. Staude
Astrophysikalisches Inst. Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany
Search for more papers by this authorJ. Vogel
Astrophysikalisches Inst. Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany
Search for more papers by this authorCorresponding Author
A. Rebassa-Mansergas
Department of Physics, University of Warwick, Coventry CV4 7AL
E-mail: [email protected]Search for more papers by this authorB. T. Gänsicke
Department of Physics, University of Warwick, Coventry CV4 7AL
Search for more papers by this authorM. R. Schreiber
Departamento de Física y Astronomía, Universidad de Valparaíso, Avenida Gran Bretana 1111, Valparaíso, Chile
Search for more papers by this authorJ. Southworth
Department of Physics, University of Warwick, Coventry CV4 7AL
Search for more papers by this authorA. D. Schwope
Astrophysikalisches Inst. Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany
Search for more papers by this authorA. Nebot Gomez-Moran
Astrophysikalisches Inst. Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany
Search for more papers by this authorA. Aungwerojwit
Department of Physics, University of Warwick, Coventry CV4 7AL
Department of Physics, Faculty of Science, Naresuan University, Phitsanulok 65000, Thailand
Search for more papers by this authorP. Rodríguez-Gil
Isaac Newton Group of Telescopes, Apdo. de Correos 321, E-38700, Santa Cruz de La Palma, Spain
Instituto de Astrofísica de Canarias, Vía Láctea, s/n, La Laguna, E-38205 Tenerife, Spain
Search for more papers by this authorV. Karamanavis
Department of Physics, Section of Astrophysics, Astronomy & Mechanics, University of Thessaloniki, 541 24 Thessaloniki, Greece
Search for more papers by this authorM. Krumpe
Astrophysikalisches Inst. Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany
Search for more papers by this authorE. Tremou
Department of Physics, Section of Astrophysics, Astronomy & Mechanics, University of Thessaloniki, 541 24 Thessaloniki, Greece
Search for more papers by this authorR. Schwarz
Astrophysikalisches Inst. Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany
Search for more papers by this authorA. Staude
Astrophysikalisches Inst. Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany
Search for more papers by this authorJ. Vogel
Astrophysikalisches Inst. Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany
Search for more papers by this authorABSTRACT
We present follow-up spectroscopy and photometry of 11 post-common envelope binary (PCEB) candidates identified from multiple Sloan Digital Sky Survey (SDSS) spectroscopy in an earlier paper. Radial velocity measurements using the Na i λλ8183.27, 8194.81 absorption doublet were performed for nine of these systems and provided measurements of six orbital periods in the range Porb= 2.7– 17.4 h. Three PCEB candidates did not show significant radial velocity variations in the follow-up data, and we discuss the implications for the use of SDSS spectroscopy alone to identify PCEBs. Differential photometry confirmed one of our spectroscopic orbital periods and provided one additional Porb measurement. Binary parameters are estimated for the seven objects for which we have measured the orbital period and the radial velocity amplitude of the low-mass companion star, Ksec. So far, we have published nine SDSS PCEBs orbital periods, all of them Porb < 1 d. We perform Monte Carlo simulations and show that 3σ SDSS radial velocity variations should still be detectable for systems in the orbital period range of Porb∼ 1– 10 d. Consequently, our results suggest that the number of PCEBs decreases considerably for Porb > 1 d, and that during the CE phase the orbital energy of the binary star is may be less efficiently used to expel the envelope than frequently assumed.
REFERENCES
- Adelman-McCarthy J. K. et al., 2008, ApJS, 175, 297
- Andronov N., Pinsonneault M., Sills A., 2003, ApJ, 582, 358
- Aungwerojwit A., Gänsicke B. T., Rodríguez-Gil P., Hagen H.-J., Giannakis O., Papadimitriou C., Allende Prieto C., Engels D., 2007, A&A, 469, 297
- Bertin E., Arnouts S., 1996, A&AS, 117, 393
- Cardini D., Cassatella A., 2007, ApJ, 666, 393
- Chabrier G., Gallardo J., Baraffe I., 2007, A&A, 472, L17
- Davis P. J., Kolb U., Willems B., Gänsicke B. T., 2008, MNRAS, 389, 1563
- Dewi J. D. M., Tauris T. M., 2000, A&A, 360, 1043
- Eggleton P. P., 1983, ApJ, 268, 368
- Eibe M. T., 1998, A&A, 337, 757
- Gänsicke B. T., Araujo-Betancor S., Hagen H.-J., Harlaftis E. T., Kitsionas S., Dreizler S., Engels D., 2004, A&A, 418, 265
- Howell S. B., Nelson L. A., Rappaport S., 2001, ApJ, 550, 897
- Iben I. J., Livio M., 1993, PASP, 105, 1373
- Kawka A., Vennes S., 2003, AJ, 125, 1444
-
Kolb U., 1993, A&A, 271, 149
10.1111/j.1365-2966.2006.11096.x Google Scholar
- Livio M., Soker N., 1988, ApJ, 329, 764
- Marsh T. R., 1989, PASP, 101, 1032
- Marsh T. R., Robinson E. L., Wood J. H., 1994, MNRAS, 266, 137
- Maxted P. F. L., Napiwotzki R., Marsh T. R., Burleigh M. R., Dobbie P. D., Hogan E., Nelemans G., 2007, in R. Napiwotzki, R. Burleigh, eds, ASP Conf. Ser. Vol. 372, 15th European Workshop on White Dwarfs. Astron. Soc. Pac., San Francisco , p. 471
- Mullan D. J., MacDonald J., 2001, ApJ, 559, 353
- Nelemans G., Tout C. A., 2005, MNRAS, 356, 753
- Nelemans G., Verbunt F., Yungelson L. R., Portegies Zwart S. F., 2000, A&A, 360, 1011
- Orosz J. A., Wade R. A., Harlow J. J. B., Thorstensen J. R., Taylor C. J., Eracleous M., 1999, AJ, 117, 1598
-
Paczynski B., 1976, in
P. Eggleton,
S. Mitton,
J. Whelan, eds, IAU Symp. 73, Structure and Evolution of Close Binary Systems. Reidel,
Dordrecht
, p. 75
10.1007/978-94-010-1483-0_8 Google Scholar
- Politano M., Weiler K. P., 2006, ApJ, 641, L137
- Politano M., Weiler K. P., 2007, ApJ, 665, 663
- Rappaport S., Joss P. C., Verbunt F., 1983, ApJ, 275, 713
- Raymond S. N. et al., 2003, AJ, 125, 2621
- Rebassa-Mansergas A., Gänsicke B. T., Rodríguez-Gil P., Schreiber M. R., Koester D., 2007, MNRAS, 382, 1377
- Ricker P. M., Taam R. E., 2008, ApJ, 672, L41
- Ritter H., Kolb U., 2003, A&A, 404, 301
- Sandquist E. L., Taam R. E., Burkert A., 2000, ApJ, 533, 984
- Scargle J. D., 1982, ApJ, 263, 835
- Schreiber M. R., Gänsicke B. T., 2003, A&A, 406, 305
- Schreiber M., Nebot Gomez-Moran A., Schwope A., 2007, in R. Napiwotzki, R. Burleigh, eds, ASP Conf. Ser. Vol. 372, 15th European Workshop on White Dwarfs. Astron. Soc. Pac., San Francisco , p. 459
- Schreiber M. R., Gänsicke B. T., Southworth J., Schwope A. D., Koester D., 2008, A&A, 484, 441
- Schwarzenberg-Czerny A., 1996, ApJ, 460, L107
- Silvestri N. M. et al., 2007, AJ, 134, 741
-
Southworth J.,
Gänsicke B. T.,
Marsh T. R.,
De Martino D.,
Hakala P.,
Littlefair S.,
Rodríguez-Gil P.,
Szkody P., 2006, MNRAS, 373, 687
10.1111/j.1365-2966.2006.11042.x Google Scholar
- Steinfadt J. D. R., Bildsten L., Howell S. B., 2008, ApJ, 677, L113
- Stoughton C. et al., 2002, AJ, 123, 485
- Taam R. E., Ricker P. M., 2006, preprint (0611043)
- Tappert C., Gänsicke B. T., Schmidtobreick L., Aungwerojwit A., Mennickent R. E., Koester D., 2007, A&A, 474, 205
- Vennes S., Thorstensen J. R., Polomski E. F., 1999, ApJ, 523, 386
- Verbunt F., Zwaan C., 1981, A&A, 100, L7
- Wade R. A., Horne K., 1988, ApJ, 324, 411
- Webbink R. F., 1984, ApJ, 277, 355
- Webbink R. F., 2007, in E. F. Milone, D. A. Leahy, D. W. Hobill, eds, Short Period Binary Stars. Springer, New York , in press
- Willems B., Kolb U., 2004, A&A, 419, 1057
- Wood M. A., 1995, in D. Koester, K. Werner, eds, Lecture Notes in Physics, Vol. 443, White Dwarfs. Springer-Verlag, Heidelberg , p. 41
- York D. G. et al., 2000, AJ, 120, 1579
