Advertisement

Astrophysics and Space Science

, 364:208 | Cite as

Extensive photometry of the intermediate polar V1033 Cas (IGR J00234+6141)

  • V. P. KozhevnikovEmail author
Original Article
  • 20 Downloads

Abstract

To measure the spin period of the white dwarf in V1033 Cas with high precision, we performed extensive photometry. Observations were obtained over 34 nights in 2017. The total duration of the observations was 143 h. We found that the spin period of the white dwarf is equal to \(563.116\,33\pm 0.000\,10~\text{s}\). Using this period, we derived the oscillation ephemeris with a long validity of 100 years. The spin oscillation semi-amplitude was stable and was equal to \(95.5\pm 1.3~\text{mmag}\). This is a very large semi-amplitude of the spin oscillation among intermediate polars, which have similar and lesser spin periods. This large semi-amplitude suggests that the system is noticeably inclined. The spin pulse profile was sinusoidal with high accuracy. This may mean that the spin oscillation is produced by a single accretion curtain whereas the second accretion curtain may be obscured by the accretion disc. Despite the large amount of our observations, we did not detect sidebands. The semi-amplitudes of the undetected sideband oscillations do not exceed 10 mmag. The absence of sideband oscillations seems puzzling. We detected the orbital variability of V1033 Cas with a period of \(4.0243\pm 0.0028~\text{h}\) and with a semi-amplitude of \(55\pm 4~\text{mmag}\). The orbital variability semi-amplitude seems large and also suggests that the system is noticeably inclined. Using our oscillation ephemeris and the times of spin pulse maximum obtained in the past, we found that the spin period is very stable. \(\mathrm{d}P/{\mathrm{d}}t\) is most probably less than \(-4\times 10^{-12}\). This contradicts the assumption that the white dwarf in V1033 Cas is not spinning at equilibrium. Our spin period and our oscillation ephemeris can be used for further investigations of the stability of the spin period in V1033 Cas.

Keywords

Stars: individual: V1033 Cas Novae, cataclysmic variables Stars: oscillations 

Notes

Acknowledgements

This work was supported in part by the Ministry of Education and Science (the basic part of the State assignment, RK No. AAAA-A17-117030310283-7) and by Program 211 of the Government of the Russian Federation (contract No. 02.A03.21.0006). This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France. This research also made use of the NASA Astrophysics Data System (ADS).

References

  1. Anzolin, G., de Martino, D., Falanga, M., Mukai, K., Bonnet-Bidaud, J.-M., et al.: Astron. Astrophys. 501, 1047 (2009).  https://doi.org/10.1051/0004-6361/200911816 ADSCrossRefGoogle Scholar
  2. Bikmaev, I.F., Revnivtsev, M.G., Burenin, R.A., Sunyaev, R.A.: Astron. Lett. 32, 588 (2006) ADSCrossRefGoogle Scholar
  3. Bonnet-Bidaud, J.M., Mouchet, M., de Martino, D., Matt, G., Motch, C.: Astron. Astrophys. 374, 1003 (2001) ADSCrossRefGoogle Scholar
  4. Bonnet-Bidaud, J.M., de Martino, D., Falanga, M., Mouchet, M., Masetti, N.: Astron. Astrophys. 473, 185 (2007).  https://doi.org/10.1051/0004-6361:20077877 ADSCrossRefGoogle Scholar
  5. Breger, M., Pamyatnykh, A.A.: Astron. Astrophys. 332, 958 (1998) ADSGoogle Scholar
  6. de Martino, D., Matt, G., Mukai, K., et al.: Astron. Astrophys. 437, 935 (2005) ADSCrossRefGoogle Scholar
  7. Eastman, J., Siverd, R., Gaudi, B.S.: Publ. Astron. Soc. Pac. 122, 935 (2010) ADSCrossRefGoogle Scholar
  8. Ferrario, L., Wickramasinghe, D.T., King, A.R.: Mon. Not. R. Astron. Soc. 260, 149 (1993) ADSCrossRefGoogle Scholar
  9. Fritz, T., Bruch, A.: Astron. Astrophys. 332, 586 (1998) ADSGoogle Scholar
  10. Gänsicke, B.T., Marsh, T.R., Edge, A., et al.: Mon. Not. R. Astron. Soc. 361, 141 (2005) ADSCrossRefGoogle Scholar
  11. Halpern, J.P., Thorstensen, J.R., Cho, P., Collver, G., Motsoaledi, M., et al.: Astron. J. 155, 247 (2018) ADSCrossRefGoogle Scholar
  12. Hellier, C.: In: Buckley, D.A.H., Warner, B. (eds.) Cape Workshop on Magnetic Cataclysmic Variables. Publ. Astron. Soc. Pac. Conf. Series, vol. 85, p. 185 (1995) Google Scholar
  13. Hellier, C.: Astrophys. J. 519, 324 (1999) ADSCrossRefGoogle Scholar
  14. Hellier, C.: Cataclysmic Variable Stars. Springer, Berlin (2001) Google Scholar
  15. Hellier, C., Cropper, M., Mason, K.O.: Mon. Not. R. Astron. Soc. 248, 233 (1991) ADSCrossRefGoogle Scholar
  16. Kozhevnikov, V.P.: Astron. Astrophys. 366, 891 (2001) ADSCrossRefGoogle Scholar
  17. Kozhevnikov, V.P.: In: Battrick, B., Favata, F., Roxburgh, I.W., Galadi, D. (eds.) Proceedings of the First Eddington Workshop on Stellar Structure and Habitable Planet Finding, 11–15 June 2001, Córdoba, Spain. ESA SP-485, p. 299. ESA Publications Division, Noordwijk (2002) Google Scholar
  18. Kozhevnikov, V.P.: Astron. Lett. 36, 554 (2010) ADSCrossRefGoogle Scholar
  19. Kozhevnikov, V.P.: Mon. Not. R. Astron. Soc. 422, 1518 (2012) ADSCrossRefGoogle Scholar
  20. Kozhevnikov, V.P.: Mon. Not. R. Astron. Soc. 443, 2444 (2014) ADSCrossRefGoogle Scholar
  21. Kozhevnikov, V.P.: New Astron. 41, 59 (2015) ADSCrossRefGoogle Scholar
  22. Kozhevnikov, V.P.: Astrophys. Space Sci. 361, 273 (2016).  https://doi.org/10.1007/s10509-016-2859-0 ADSCrossRefGoogle Scholar
  23. Kozhevnikov, V.P.: Astrophys. Space Sci. 362, 144 (2017).  https://doi.org/10.1007/s10509-017-3129-5 ADSCrossRefGoogle Scholar
  24. Kozhevnikov, V.P.: Astrophys. Space Sci. 363, 130 (2018).  https://doi.org/10.1007/s10509-018-3351-9 ADSCrossRefGoogle Scholar
  25. Kozhevnikov, V.P., Zakharova, P.E.: In: Garzon, F., Eiroa, C., de Winter, D., Mahoney, T.J. (eds.) Disks, Planetesimals and Planets. Publ. Astron. Soc. Pac. Conf. Series, vol. 219, p. 381 (2000) Google Scholar
  26. Kuulkers, E., Norton, A., Schwope, A., Warner, B.: In: Lewin, W., van der Klis, M. (eds.) Compact Stellar X-Ray Sources. Cambridge Astrophysics Ser., vol. 39, p. 421. Cambridge University Press, Cambridge (2006) CrossRefGoogle Scholar
  27. la Dous, C.: Space Sci. Rev. 67, 1 (1994) ADSCrossRefGoogle Scholar
  28. Patterson, J.: Publ. Astron. Soc. Pac. 106, 209 (1994) ADSCrossRefGoogle Scholar
  29. Scaringi, S.: Mon. Not. R. Astron. Soc. 438, 1233 (2014) ADSCrossRefGoogle Scholar
  30. Schwarzenberg-Czerny, A.: Mon. Not. R. Astron. Soc. 253, 198 (1991) ADSCrossRefGoogle Scholar
  31. Schwarzenberg-Czerny, A.: Balt. Astron. 7, 43 (1998) ADSGoogle Scholar
  32. Warner, B.: Mon. Not. R. Astron. Soc. 219, 347 (1986) ADSCrossRefGoogle Scholar
  33. Warner, B.: Cataclysmic Variable Stars. Cambridge Astrophys. Ser., vol. 28. Cambridge University Press, Cambridge (1995) CrossRefGoogle Scholar
  34. Warner, B.: Astrophys. Space Sci. 241, 263 (1996) ADSCrossRefGoogle Scholar

Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  1. 1.Astronomical ObservatoryUral Federal UniversityEkaterinburgRussia

Personalised recommendations