New Value of Apsidal Motion Velocity and Physical Parameters of the Triple Eclipsing System AS Cam

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Abstract

Applying a new approach to the measurement of the rate of apsidal motion in the system AS Cam (P=3.43d, V=8.58m, e=0.17, Sp B7.5 V+B9.0 V), we obtained the value ω˙obs= 0.38°/yr, which is not as large as results of earlier measurements differs from the theoretical value for synchronized motion ω˙theor = 0.44°/yr. Previous generally accepted value was three times lower. Physical parameters of the components have been refined: T1=12980±150 K, M1=3.21±0.03M⊙, R1=2.46±0.01R⊙, T2=10850±100 K, M2 = 2.32 ± 0.03M⊙, R2=1.84±0.01R⊙. For the first time, a reliable orbit and physical parameters of the invisible satellite, the third body in the system, have been determined: P=2.21 yr, ω = 88°, e=0.70, M3sini=0.97±0.01M⊙.

About the authors

I. M. Volkov

Lomonosov Moscow State University, Sternberg State Astronomical Institute

Author for correspondence.
Email: hwp@yandex.ru
Moscow, Russia

References

  1. K. F. Khaliullin and V. S. Kozyreva, Astrophys. Space Sci. 94, 115 (1983).
  2. J. W. Moffat, Phys. Rev. D 19, 3554 (1979).
  3. J. W. Moffat, Astrophys. J. Letters 287, L77 (1984).
  4. J. W. Moffat, Phys. Rev. D 39, 474 (1989).
  5. D. I. Martynov and K. F. Khaliullin, Astrophys. Space Sci. 71, 147 (1980).
  6. K. F. Khaliullin, S. A. Khodykin, and A. I. Zakharov, 375, 314 (1991).
  7. S. A. Khodykin and V. G. Vedeneyev, 475, 798 (1997).
  8. S. A. Khodykin, A. I. Zakharov, and W. L. Andersen, 615, 506 (2004).
  9. L. V. Mossakovskaya, Astron. Letters 19, 35 (1993).
  10. E. Guinan, M. Bonaro, S. Engle, and A. Prsa, J. AAVSO 40, 417 (2012).
  11. I. M. Volkov, D. Chochol, J. Grygar, M. Jelinek, et al., Inform. Bull. Var. Stars № 6066, 1 (2013).
  12. I. M. Volkov, D. Chochol, J. Grygar, M. Mašek, and J. Juryšek, Contrib. Astron. Observ. Skalnate Pleso 47, 29 (2017).
  13. N. I. Shakura, Soviet Astron. Letters 11, 224 (1985).
  14. S. Albrecht, S. Reffert, I. A. G. Snellen, and J. N. Winn, Nature 461, 373 (2009).
  15. D. B. McLaughlin, Publ. Michigan Observ. 5, 91 (1934).
  16. I. M. Volkov, Astrophys. Space Sci. 296, 105 (2005).
  17. K. Pavlovski, J. Southworth, and V. Kolbas, Astrophys. J. Letters 734, id. L29 (2011).
  18. R. W. Hilditch, Publ. Astron. Soc. Pacific 84, 519 (1972).
  19. F. P. Maloney, E. F. Guinan, and P. T. Boyd, Astron. J. 98, 1800 (1989).
  20. V. S. Kozyreva, A. I. Zakharov, and K. F. Khaliullin, Inform. Bull. Var. Stars № 4690, 1 (1999).
  21. V. S. Kozyreva and K. F. Khaliullin, Astron. Rep. 43, 679 (1999).
  22. Z. Bozkurt and Ö. L. Değirmenci, Monthly Not. Roy. Astron. Soc. 379, 370 (2007).
  23. R. W. Hilditch, Mem. Roy. Astron. Soc. 76, 1 (1972).
  24. V. Kozyreva, A. Kusakin, and A. Bogomazov, Res. Astron. and Astrophys. 18(1), id. 010 (2018).
  25. V. S. Kozyreva and A. I. Zakharov, Astron. Letters 32, 313 (2006).
  26. T. D. Padalia and R. K. Srivastava, Astrophys. Space Sci. 38, 87 (1975).
  27. C. H. Lacy, Astron. J. 104, 801 (1992).
  28. P. J. Flower, 469, 355 (1996).
  29. V. Straiys, Multicolor stellar photometry (Tucson: Pachart Pub. House, 1992).
  30. J. C. Mermilliod, M. Mermilliod, and B. Hauck, Astron. and Astrophys. Suppl. Ser. 124, 349 (1997).
  31. G. M. Green, E. F. Schlafly, D. P. Finkbeiner, H.-W. Rix, et al., Astrophys. J. 810, id. 25 (2015).
  32. C. H. S. Lacy, Astron. J. 124, 1162 (2002).
  33. H. C. Lines, R. D. Lines, Z. Glownia, and E. F. Guinan, Publ. Astron. Soc. Pacific 101, 925 (1989).
  34. K. G. Stassun, R. J. Oelkers, M. Paegert, G. Torres, et al., Astron. J. 158(4), id. 138 (2019).
  35. I. M. Volkov, N. S. Volkova, and D. Chochol, Astron. Rep. 54, 418 (2010).
  36. I. M. Volkov, N. S. Volkova, I. V. Nikolenko, and D. Chochol, Astron. Rep. 55, 824 (2011).
  37. I. M. Volkov, D. Chochol, and A. S. Kravtsova, Astron. Rep. 61, 440 (2017).
  38. I. M. Volkov and A. S. Kravtsova, Astron. Rep. 64, 211 (2020).
  39. M. A. Burlak, I. M. Volkov, and N. P. Ikonnikova, Contrib. Astron. Observ. Skalnate Pleso 48, 536 (2018).
  40. O. Gulmen, C. Ibanoglu, S. Bozkurt, and N. Gudur, Inform. Bull. Var. Stars № 1090, 1 (1976).
  41. R. A. Wade and S. M. Rucinski, Astron. and Astrophys. Suppl. Ser. 60, 471 (1985).
  42. L. A. Bagaev, I. M. Volkov, and I. V. Nikolenko, Astron. Rep. 62, 664 (2018).
  43. P. De Cat, in IAU Colloq. 185 Radial and Nonradial Pulsations as Probes of Stellar Physics, edited by C. Aerts, T. R. Bedding, and J. Christensen-Dalsgaard, Astron. Soc. Pacific Conf. Ser. 259, 196 (2002).
  44. L. Girardi, A. Bressan, G. Bertelli, and C. Chiosi, Astron. and Astrophys. Suppl. Ser. 141, 371 (2000).
  45. D. Y. Martynov, Eclipsing Variable Stars (New York: John Wiley and Sons, 1973).
  46. K. F. Khaliullin and A. I. Khaliullina, Astron. Rep. 33, 41 (1989).
  47. J. Krzesinski, E. Kuczawska, and G. Pajdosz, Inform. Bull. Var. Stars № 3495, 1 (1990).
  48. P. Battistini, A. Bonifazi, and A. Guarnieri, Inform. Bull. Var. Stars № 951, 1 (1974).
  49. D. B. Caton and W. C. Burns, Inform. Bull. Var. Stars № 3900, 1 (1993).
  50. W. Ogoza, Inform. Bull. Var. Stars № 4263, 1 (1995).
  51. T. Hegedus, I. B. Biro, T. Borkovits, and Z. Paragi, Inform. Bull. Var. Stars № 4340, 1 (1996).
  52. M. Wolf, L. Sarounova, and R. Diethelm, Astron. and Astrophys. Suppl. Ser. 116, 463 (1996).
  53. G. Samolyk, J. AAVSO 39, 177 (2011).
  54. R. Diethelm, Inform. Bull. Var. Stars № 5653, 1 (2005).
  55. I. B. Biro, T. Borkovits, S. Csizmadia, T. Hegedus, et al., Inform. Bull. Var. Stars № 5684, 1 (2006).
  56. L. Brát, L. melcer, H. Kuèáková, R. Ehrenberger, et al., Open European J. Var. Stars 0094(1), 1 (2008).
  57. E. Pohl, E. Hamzaoglu, N. Gudur, and C. Ibanoglu, Inform. Bull. Var. Stars № 2385, 1 (1983).
  58. I. B. Biro, T. Borkovits, T. Hegedus, and Z. Paragi, Inform. Bull. Var. Stars № 4555, 1 (1998).
  59. T. Borkovits, I. B. Biro, T. Hegedus, S. Csizmadia, et al., Inform. Bull. Var. Stars № 5313, 1 (2002).
  60. I. B. Biro, T. Borkovits, T. Hegedus, Z. T. Kiss, et al., Inform. Bull. Var. Stars № 5753, 1 (2007).
  61. I. M. Volkov, Peremennye Zvezdy 42, 1 (2022).
  62. I. M. Volkov, A. S. Kravtsova, and D. Chochol, Astron. Rep. 65, 184 (2021).

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