Superhumps and their Evolution during Superoutbursts

• Autorzy: Smak, J.
• Języki publikacji: EN

Abstrakty

EN

Light curves of superhumps and their evolution during superoutbursts are analyzed by decomposing them into their Fourier components, including the fundamental mode and the first three overtones. The amplitudes of the fundamental mode are found to decrease significantly during superoutburst while those of the overtones remain practically constant. The phases of maxima of the fundamental mode increase systematically during superoutburst while those of the overtones - systematically decrease. The combination of the two effects is responsible for the characteristic evolution of superhump light curves: the appearance and growth of the secondary humps and the spurious phase jumps in the (O-C) diagrams. Two intrepretations are possible. Either that instead of just one superhump period P_sh there are four periods P_k which resemble - but are significantly different from - the fundamental mode and the first three overtones of P_sh. Or - more likely - that those time-dependent phase shifts are genuine.

Słowa kluczowe

EN

binaries: close; novae; cataclysmic variables; stars: dwarf novae

• Czasopismo: Acta Astronomica
• Rocznik: 2016
• Tom: Vol. 66, No. 1
• Strony: 75--83
• Opis fizyczny: Bibliogr. 27 poz., rys., tab., wykr.

Twórcy

autor

Smak, J.

• N. Copernicus Astronomical Center, Polish Academy of Sciences, Bartycka 18, 00-716 Warsaw, Poland,

Bibliografia

• Bąkowska, K., Olech, A., Rutkowski,A., Koff, R., de Miguel, E., and Otulakowska-Hypka,M. 2014a, Contrib. Astron. Obs. Skalnaté Pleso, 43, 325.
• Bąkowska, K., and Olech, A. 2014b, Acta Astron., 64, 247.
• Hirose, M., and Osaki, Y. 1990, PASJ, 42, 135.
• Kato, T., Nogami, D., and Masuda, S. 2003, PASJ, 55, L7.
• Kato, T., et al. 2009, PASJ, 61, S395.
• Kato, T., et al. 2010, PASJ, 62, 1525.
• Kato, T., et al. 2012, PASJ, 64, 21.
• Montgomery, M.M. 2001, MNRAS, 325, 761.
• Murray, J.R. 2000, MNRAS, 314, L1.
• Olech, A., Schwarzenberg-Czerny, A., Kędzierski, P., Złoczewski, K., Mularczyk, K., and Wiśniewski, M. 2003, Acta Astron., 53, 175.
• Olech, A., Złoczewski, K., Mularczyk, K., Kędzierski, P., Wisniewski, M., and Stachowski, G. 2004a, Acta Astron., 54, 57.
• Olech, A., Cook, L.M., Złoczewski, K., Mularczyk, K., Kędzierski, P., Udalski, A., and Wiśniewski, M. 2004b, Acta Astron., 54, 233.
• Otulakowska-Hypka, M., Olech, A., de Miguel, E., Rutkowski, A., Koff, R., and Bąkowska, K. 2013, MNRAS, 429, 868.
• Patterson, J., Jablonski, F., Koen, C., O’Donoghue, D., and Skillman, D.R. 1995, PASP, 107, 1183.
• Patterson, J., et al. 1998, PASP, 110, 1290.
• Patterson, J. 1999, in: “Disk Instabilities in Close Binary Systems”, Eds. S. Mineshige and J.C. Wheeler, Tokyo: Universal Academy Press, p. 61.
• Smak, J. 2009, Acta Astron., 59, 121.
• Smak, J. 2010, Acta Astron., 60, 357.
• Smak, J. 2013, Acta Astron., 63, 369.
• Smith, A.J., Haswell, C.A., Murray, J.R., Truss, M.R., and Foulkes, S.B. 2007, MNRAS, 378, 785.
• Still, M., Howell, S.B., Wood, M.A., Cannizzo, J.K., and Smale, A.P. 2010, ApJ, 717, L113.
• Udalski, A. 1990, AJ, 100, 226.
• Uemura, M., et al. 2004, PASJ, 56, 141.
• Vogt, N. 1974, A&A, 36, 369.
• Warner, B. 1975, MNRAS, 170, 219.
• Whitehurst, R. 1988, MNRAS, 232, 35.
• Wood, M.A., Still, M.D., Howell, S.B., Cannizzo, J.K., and Smale, A.P. 2011, ApJ, 741, 105.

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).