Journal of Astronomy and Space Sciences

The Korean Space Science Society (한국우주과학회)
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The First Comprehensive Photometric Study of the Neglected Binary System V345 Cassiopeiae

  • Jeong, Min-Ji (Department of Astronomy & Space Science, Chungbuk National University) ;
  • Kim, Chun-Hwey (Department of Astronomy & Space Science, Chungbuk National University)
  • Received : 2013.11.04
  • Accepted : 2013.11.17
  • Published : 2013.12.15
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Abstract

We present the first BVRI CCD photometric observations of V345 Cas made on 22 nights during the observing seasons in 2007-2008. Our light curves, resembling those of EB-type binary stars, are analyzed with the 2003 version of the Wilson-Devinney binary code. The photometric study shows that V345 Cas is a typical semi-detached binary system with the primary star being about ${\Delta}T$ = 2400 K hotter, two times more massive, but only 17% larger than the secondary star being filled with it's Roche-lobe. The orbit has a relatively large inclination of about $88^{\circ}$. A cool spot on the secondary component is modeled to explain a small light curve asymmetry. Absolute dimensions and related radiometric parameters of the eclipsing pair are calculated and their evolutionary states are discussed with the HR diagrams of mass-radius and temperature-luminosity. A period analysis of all available times of minima, including our measurements, indicates that the orbital period may vary in a cyclical way, unfortunately the secondary period for the variation can not be uniquely determined because of lack of present timing data.

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References

  1. Applegate JH, A mechanism for orbital period modulation in close binaries, ApJ, 385, 621-629 (1992). http:// dx.doi.org/10.1086/170967
  2. Brat L, Zejda M, Svoboda P, B.R.N.O. Contributions 34, OEJV, 74, 1-75 (2007).
  3. Butters OW, West RG, Anderson DR, Collier Cameron A, Clarkson WI, et al., The first WASP public data release, A&A, 520, L10, 1-4 (2010). http://dx.doi. org/10.1051/0004-6361/201015655
  4. Cox AN, Allen's Astrophysical Quantities, fourth edition, ed., A. N. Cox (Springer, New York, 2000), 151, 388.
  5. Diethelm R, 152. List of Minima of Eclipsing Binaries, BBSAG Bull., 119, 1-10 (1999).
  6. Diethelm R, 160. List of Minima of Eclipsing Binaries, BBSAG Bull., 127, 1-11 (2002).
  7. Diethelm R, 162-nd list of minima timings of eclipsing binaries by BBSAG observers, IBVS, No. 5438, 1-11 (2003).
  8. Diethelm R, Timings of Minima of Eclipsing Binaries, IBVS, No. 5920, 1-7 (2010).
  9. Diethelm R, Timings of Minima of Eclipsing Binaries, IBVS, No. 5960, 1-11 (2011).
  10. Diethelm R, Timings of Minima of Eclipsing Binaries, IBVS, No. 6011, 1-13 (2012).
  11. Flower PJ, Transformations from Theoretical Hertzsprung- Russell Diagrams to Color-Magnitude Diagrams: Effective Temperatures, B-V Colors, and Bolometric Corrections, ApJ, 469, 355-365 (1996). https://doi.org/10.1086/177785
  12. Gotz W, Huth H, Hoffmeister C, Die Veraenderlichen Sterne der nordlichen Milchstrasse Teil IX, VeSon, 4, 123-238 (1957).
  13. Girardi L, Bressan A, Bertelli G, Chiosi C, Evolutionary tracks and isochrones for low- and intermediate-mass stars: From 0.15 to 7 $M_{\odot}$, and from Z = 0.0004 to 0.03, A&AS, 141, 371-383 (2000). http://dx.doi.org/10.1051/ aas:2000126
  14. Harmanec P, Stellar masses and radii based on modern binary data, Bull. Astron. Inst. Czech., 39, 329-345 (1988).
  15. Häussler K , Veranderliche im Feld $23^{h}$ $09^{m}$ +$52^{\circ}5$ (supplement), VeSon, 10, 374-388 (1990).
  16. Hilditch RW, An Introduction to Close Binary Stars (Cambridge University Press, Cambridge, 2001), Chap. 6.
  17. Hoffmeister C, 213 neue Veranderliche, AN, 274, 36-40 (1943).
  18. Huth H, Herausgegeben von der sternwarte Sonneberg der Deutschen Akademie der Wissenschaften, MVS, 229 (1956).
  19. Hubscher J, BAV-results of observations-photoelectric minima of selected eclipsing binaries and maxima of pulsating stars, IBVS, 5984, 1-16 (2011).
  20. Hubscher J, Lehmann PB, BAV-Results of Observations-Photoelectric Minima of Selected Eclipsing Binaries and Maxima of Pulsationg Stars, IBVS, No. 6026, 1-23 (2012).
  21. Hubscher J, Lehmann PB, Monninger, G, Steinbach H-M, Walter F, BAV-results of observations-photoelectric minima of selected eclipsing binaries and maxima of pulsating stars, IBVS, No. 5941, 1-16 (2010).
  22. Hubscher J, Lehmann PB, Walter F, BAV-Results of Observations-Photoelectric Minima of Selected Eclipsing Binaries and Maxima of Pulsationg Stars, IBVS, No. 6010, 1-22 (2012).
  23. Hubscher J, Steinbach H-M, Walter F, BAV-Results of Observations-Photoelectric Minima of Selected Eclipsing Binaries and Maxima of Pulsationg Stars, IBVS, No. 5830, 1-8 (2008).
  24. Hubscher J, Steinbach H-M, Walter F, BAV-Results of Observations-Photoelectric Minima of Selected Eclipsing Binaries and Maxima of Pulsationg Stars, IBVS, No. 5874, 1-13 (2009a).
  25. Hubscher J, Steinbach H-M, Walter F, BAV-results of observations-photoelectric minima of selected eclipsing binaries and maxima of pulsating stars, IBVS, No. 5889, 1-13 (2009b).
  26. Irwin JB, The determination of a light-time orbit, ApJ, 116, 211-217 (1952). http://dx.doi.org/10.1086/145604
  27. Irwin JB, Standard light-time curves, AJ, 64, 149-155 (1959). http://dx.doi.org/10.1086/107913
  28. Ibanoglu C, Cakirli O, Degirmenci O, Saygan S, Ulas B, et al., The BV light and it O-C curves analyses of the triple system V505 Sagittarii, A&A, 354, 188-192 (2000).
  29. Jeong JH, Kim C-H, WZ Cephei: a dynamically active W UMa-type binary star, JASS, 28, 163-172 (2011). http:// dx.doi.org/10.5140/JASS.2011.28.3.163
  30. Kim C-H, Jeong JH, V700 Cygni: A Dynamically Active W UMa-type Binary Star II, JASS, 29, 151-161 (2012).
  31. Kim C-H, Kim H-I, Yoon TS, Han W, Lee JW, et al., SW Lyncis-advances and questions, JASS, 27, 263-278 (2010). http://dx.doi.org/10.5140/JASS.2010.27.4.263.
  32. Kreiner JM, Kim C-H, Nha IS, An atlas of O-C diagrams of eclipsing binary stars (Wydawnictwo Naukowe Akademii Pedagogicznej, Krakow, 2001).
  33. Kurucz RL, in Light Curve Modeling of Eclipsing Binary Stars, ed., E. F. Milone (Springer-Verlag, New York, 1993), 93.
  34. Kwee KK, van Woerden H, A method for computing accurately the epoch of minimum of an eclipsing variable, BAN, 12, 327-330 (1956).
  35. Lee JW, Kim C-H, Kim DH, Kim S-L, Lee CU, et al., The First Comprehensive Photometric Study of the Algol-type System CL Aurigae, AJ, 139, 2669-2678 (2010). http:// dx.doi.org/10.1088/0004-6256/139/6/2669
  36. Lee JW, Kim C-H, Kim S-L, Lee C-U, Han W, et al., A Long-term Photometric Study of the Near-contact Binary RU Ursae Minoris, PASP, 120, 720-729 (2008). https://doi.org/10.1086/589976
  37. Lee JW, Kim SL, Lee CU, Kim HI, Park JH, et al., Photometric Properties of the Near-Contact Binary GW Geminorum, PASP, 121, 114-110 (2009).
  38. Locher K, 89th List of Minima of Eclipsing Binaries, BBSAG Bull., 56, 1-7 (1981a).
  39. Locher K, 90th List of Minima of Eclipsing Binaries, BBSAG Bull., 57, 1-7 (1981b).
  40. Locher K, 91th List of Minima of Eclipsing Binaries, BBSAG Bull., 58, 1-7 (1982a).
  41. Locher K, 95th List of Minima of Eclipsing Binaries, BBSAG Bull., 62, 1-7 (1982b).
  42. Lucy LB, Gravity-Darkening for Stars with Convective Envelopes, ZA, 65, 89-92 (1967).
  43. Mikulasek Z, Silhan J, Zejda M, Contributions Nicholas Copernicus Observatory, Brno, 30, 4 (1992).
  44. Monet DG, Levine SE, Canzian B, Ables HD, Bird AR, et al., The USNO-B catalog, AJ, 125, 984-993 (2003). https://doi.org/10.1086/345888
  45. Popper DM, Stellar masses, ARA&A, 18, 115-164 (1980). https://doi.org/10.1146/annurev.aa.18.090180.000555
  46. Press WH, Teukolsky SA, Vetterling WT, Flannery BP, Numerical recipes in C, 2nd ed. (Cambridge University Press, Cambridge, 1992), Chap. 15.
  47. Rucinski SM, The Proximity Effects in Close Binary Systems. II. The Bolometric Reflection Effect for Stars with Deep Convective Envelopes, AcA, 19, 245-255 (1969).
  48. Safar J, Zejda M, CCD times of minima of faint eclipsing binaries III, IBVS, No. 5263, 1-9 (2002).
  49. Sipahi E, 2004 UBVR Photometry of the Eclipsing Binary KR Cyg, IBVS, No. 5635, 1-4 (2005).
  50. Street RA, Pollaco DL, Fitzsimmons A, Keenan FP, Horne K, et al, SuperWASP: Wide Angle Search for Planets, ASPC, 294, 405-408 (2003).
  51. Surgit D, Erdem A, Budding E, The Algol binary system KZ Pavonis revisited, MNRAS, 407, 497-506 (2010). https://doi.org/10.1111/j.1365-2966.2010.16919.x
  52. Torres G, On the Use of Empirical Bolometric Corrections for Stars, AJ, 140, 1158-1162 (2010). https://doi.org/10.1088/0004-6256/140/5/1158
  53. van Hamme W, New limb-darkening coefficients for modeling binary star light curves, AJ, 106, 2096-2117 (1993). https://doi.org/10.1086/116788
  54. van Hamme W, Wilson RE, Stellar atmospheres in eclipsing binary models, ASPC, 298, 323-328 (2003).
  55. Wilson RE, Biermann P, TX CANCRI - Which component is hotter, A&A, 48, 349-357 (1976).
  56. Wilson RE, Devinney EJ, Realization of accurate close-binary light curves: application to MR Cygni, ApJ, 166, 605-619 (1971). http://dx.doi.org/10.1086/150986
  57. Zejda M, Contributions Nicholas Copernicus Observatory, Brno, 31, 4 (1995).

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