IJAA  Vol.3 No.2 , June 2013
Photometric Study of Three Short-Period Eclipsing Binaries from the ASAS Catalogue
ABSTRACT

We present the results of our study of three previously unstudied short-period eclipsing binaries, namely: ASAS 110609 2045.3, ASAS105331 7424.7, and ASAS 130057 + 2120.3. Using the visual (V)-band data obtained from the ASAS catalogue, the orbital and physical parameters of the systems were derived for the first time using the Wilson-Divenney (WD) codes. Our investigation revealed that ASAS 110609 2045.3 is a near-contact binary star of the W Uma type having an angle of inclination of 80° ± 1, a mass ratio of about 0.5, an orbital period of 0.2933 ± 0.0130 days, and an effective temperature in the range of 5800 K - 6200 K, making it a G2V-F7V spectral system. ASAS 105331 7424.7 was established to be an over-contact binary system of the W Uma type, inclined at 86° ± 2 to the line of sight, having a mass ratio of about 0.9, a period of 0.4825 ± 0.0002, and an effective temperature in the range of 5200 K - 5300 K, making it a K2V-K0V spectral system. A third light factor of just 0.1 was established for the system, however, no evidence of starspots or discs was inferred for either component. ASAS 130,057 + 2120.3 is a W Uma binary having a mass ratio of about 0.6 in a state of marginal contact. Its orbital inclination is 55° ± 1; the effective temperature is in the range of 6200 K - 6500 K, making it a F7V-F5V stellar system. The system showed evidence of third light, with a third light factor of 0.6, however, the presence of spots or discs could not be established for either component. The deduced period was 0.8930 ± 0.0014 days. None of the systems showed any evidence of the O’Connell effect on either component.


Cite this paper
J. Obu and P. Okeke, "Photometric Study of Three Short-Period Eclipsing Binaries from the ASAS Catalogue," International Journal of Astronomy and Astrophysics, Vol. 3 No. 2, 2013, pp. 123-130. doi: 10.4236/ijaa.2013.32014.
References
[1]   H. A. Abt, “Normal and Abnormal Binary Frequencies,” Annual Review of Astronomy and Astrophysics, Vol. 21, 1983, pp. 343-372. doi:10.1146/annurev.aa.21.090183.002015

[2]   D. W. Latham, T. Mazeh, R. P. Stefanik, R. J. Davis, B. W. Carney, G. Torres and J. B. Laird, “Spectroscopic Binaries in the Halo,” In: H. A. McAlister and W. I. Hartkopf, Eds., Complementary Approaches to Double and Multiple Star Research, IAU Colloquium 135, ASP Conference Series, Vol. 32, 1992, pp. 158-161.

[3]   D. J. Pinfield, P. D. Dobbie, R. F. Jameson, I. A. Steele, H. R. A. Jones and A. C. Katsiyannis, “Brown Dwarfs and Low-Mass Stars in the Pleiades and Praesepe: Membership and Binarity,” Monthly Notices of the Royal Astronomical Society, Vol. 342, No. 4, 2003, pp. 1241-1259. doi:10.1046/j.1365-8711.2003.06630.x

[4]   C. Maceroni, “Binaries as Astrophysical Laboratories: An Overview,” In: C. Sterken and C. Aerts, Eds., Astrophysics of Variable Stars, ASP Conference Series, Vol. 349, 2006, pp. 41-53.

[5]   I. Ribas, “Binary Stars as Astrophysical Laboratories: Open Questions,” In: C. Sterken and C. Aerts, Eds., Astrophysics of Variable Stars, ASP Conference Series, Vol. 349, 2006, pp. 55-70.

[6]   B. Paczynski, D. M. Szczygiel, B. Pilecki and G. Pojmanski, “Eclipsing Binaries in the All Sky Automated Survey Catalogue,” Monthly Notices of the Royal Astronomical Society, Vol. 368, No. 3, 2006, pp. 1311-1318. doi:10.1111/j.1365-2966.2006.10223.x

[7]   R. E. Wilson and E. J. Divenney, “Realization of Accurate Close-Binary Light Curves: Application to MR Cygni,” The Astrophysical Journal, Vol. 166, 1971, pp. 605-619. doi:10.1086/150986

[8]   T. Vanmunster, “Peranso 2.5: A Light Curve and Analysis Software User Manual,” 2008. CBABelgium.com

[9]   D. H. Bradstreet and D. P. Steelman, “Binary Maker 3: User Manual,” Contact Software, Norristown, 2005.

[10]   G. Pojmanski, “The All Sky Automated Survey. Catalog of Variable Stars I. 0h-6h Quarter of the Southern Hemisphere,” Acta Astronomica, Vol. 52, 2002, pp. 397-427.

[11]   M. S. Bessell and J. M. Brett, “JHKLM Photometry: Standard Systems, Passbands, and Intrinsic Colors,” Publications of the Astronomical Society of the Pacific, Vol. 100, 1988, pp. 1134-1151. doi:10.1086/132281

[12]   R. E. Wilson, “Eccentric Orbit Generalization and Simultaneous Solution of Binary Star Light and Velocity Curves,” The Astrophysical Journal, Vol. 234, 1979, pp. 1054-1066. doi:10.1086/157588

[13]   A. T. Tokunaga, “Effective Temperatures and Intrinsic Colours for Main Sequence, Giant, and Supergiant Stars,” In: A. N. Cox, Ed., Allen’s Astrophysical Quantities, 4th Edition, Springer-Verlag, New York, 2000, pp. 143-149. doi:10.1007/978-1-4612-1186-0_7

[14]   S. Ferraz-Mello, “Estimation of Periods from Unequally Spaced Observations,” Astronomical Journal, Vol. 86, 1981, pp. 619-624. doi:10.1086/112924

[15]   W. van Hamme, “New Limb-Darkening Coefficients for Modeling Binary Star Light Curves,” Astronomical Journal, Vol. 106, No. 5, 1993, pp. 2096-2117. doi:10.1086/116788

[16]   L. B. Lucy, “The Light Curves of W Ursae Majoris Stars,” Astrophysical Journal, Vol. 153, 1968, pp. 877-884. doi:10.1086/149712

[17]   S. M. Rucinski, “The Photometric Proximity Effects in Close Binary Systems. I. The Distortion of the Components and the Related Effects in Early Type Binaries,” Acta Astronomica, Vol. 19, 1969, pp. 125-153.

[18]   G. Djurasevic, M. Yilmaz, O. Bastürk, T. Kiliuoglu, O. Latkovic and S. Caliskan, “Physical Parameters of Close Binaries QX Andromedae, RW Comae Berenices, MR Delphini, and BD + 07? 3142,” Astronomy and Astrophysics, Vol. 525, 2011. doi:10.1051/0004-6361/201014895

[19]   K. Yakut, “An Observational Study of Unevolved Close Binary Stars,” Ph.D. Dissertation, Ege University, Izmir, 2006.

[20]   R. Y. Kiron, K. Sriram and R. Vivekananda, “Photometric Parameters, Distance and Period-Colour Study of Contact Binary Stars in the Globular Cluster ω Centauri,” Bulletin of the Astronomical Society of India, Vol. 39, 2011, pp. 247-257.

[21]   Qian, “Possible Mass and Angular Loss in Algol-Type Binaries. V. RT Persei and TX Ursae Majoris,” Astronomical Journal, Vol. 122, 2001, pp. 2686-2691.

[22]   R. G. Samec, D. R. Faulker and D. B. Williams, “The Physical Nature and Orbital Behavior of V523 Cassiopeiae,” Astronomical Journal, Vol. 128, No. 6, 2004, pp. 2997-3004. doi:10.1086/426357

[23]   O. Latkovic, M. Zboril and G. Djurassevic, “Light Curve Analysis of the Late Type Binary V523 Cassiopeiae” Serbian Astronomical Journal, Vol. 178, 2009, pp. 45-48. doi:10.2298/SAJ0978045L

[24]   S. Zola, P. Niarchos, V. Manimamis and A. Dapergolas, “A Photometric Study of BH Cas,” Astronomy & Astrophysics, Vol. 374, 2001, pp. 164-170.

 
 
Top