Curious Variables Experiment (CURVE). CCD Photometry of Dwarf Nova V660 Herculis

• Autorzy: Olech A. , Złoczewski K. , Cook L. M. , Mularczyk K. , Kędzierski P. , Wiśniewski M.
• Języki publikacji: EN

Abstrakty

EN

We report extensive photometry of the dwarf nova V660 Her. During our campaign, lasting from August 2003 to November 2004, we recorded one bright eruption which turned out to be a superoutburst lasting about 15 days and having amplitude of ≈4.5 mag. Clear superhumps with a mean period of P_sh=0.080924(18) days (116.53±0.03 min) were present during all nights of the superoutburst. The period of the superhumps was not stable and in the interval covered by our observations it decreased with a rate of P/P_sh=-4.0(1.4)×10^-5. Based on our data and the known orbital period of the binary we calculate the period excess of 3.4±0.1%, which is typical for an SU UMa star at this orbital period. This value indicates that the mass ratio of the system is q=0.154

Słowa kluczowe

EN

binaries: close; novae; cataclysmic variables; stars: individual: V660 Her

• Wydawca: Copernicus Foundation for Polish Astronomy
• Czasopismo: Acta Astronomica
• Rocznik: 2005
• Tom: Vol. 55, No. 2
• Strony: 237--246
• Opis fizyczny: Bibliogr. 21 poz., rys., tab., wykr.

Twórcy

autor

Olech A.

• Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, ul. Bartycka 18, 00-716 Warszawa, Poland

autor

Złoczewski K.

• Warsaw University Observatory, Al. Ujazdowskie 4, 00-476 Warszawa, Poland

autor

Cook L. M.

• Center for Backyard Astrophysics (Concord), 1730 Helix Court, Concord, CA 94518, USA

autor

Mularczyk K.

• Warsaw University Observatory, Al. Ujazdowskie 4, 00-476 Warszawa, Poland

autor

Kędzierski P.

• Warsaw University Observatory, Al. Ujazdowskie 4, 00-476 Warszawa, Poland

autor

Wiśniewski M.

• Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, ul. Bartycka 18, 00-716 Warszawa, Poland

Bibliografia

• Berry, R., and Burnell, J. 2000, "The Handbook of Astronomical Imaging Processing", Willmann-Bell, Inc., Richmond, VA, USA.
• Kato, T., Nogami, D., Moilanen, M., and Yamaoka, H. 2003, PASJ, 55, 989.
• Liu, W., Hu, J.Y., Zhu, X.H., and Li, Z.Y. 1999, Astrophys. J. Suppl. Ser., 122, 243.
• Lubow, S.H. 1992, Astrophys. J., 401, 317.
• Olech, A. 1997, Acta Astron., 47, 281.
• Olech, A., K˛edzierski, P., Złoczewski, K., Mularczyk, K., and Wi´sniewski, M. 2003a, Astron. Astrophys., 411, 483.
• Olech, A., Schwarzenberg-Czerny, A., Kędzierski, P., Złoczewski, K., Mularczyk, K., Wiśniewski, M. 2003b, Acta Astron., 53, 175.
• Olech, A., Zloczewski, K.,Mularczyk, K., Kedzierski, P.,Wiśniewski, 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.
• Osaki, Y. 1985, Astron. Astrophys., 144, 369.
• Patterson, J. 1998, PASP, 110, 1132.
• Schwarzenberg-Czerny, A. 1996, Astrophys. J. Letters, 460, L107.
• Semeniuk, I., Olech, A., Kwast, T., and Należyty, M. 1997, Acta Astron., 47, 201.
• Shugarov, S.Y. 1975, Astron. Tsirk., 862.
• Smak, J., and Waagen, E.O. 2004, Acta Astron., 54, 433.
• Spogli, C., Fiorucci, M., and Tosti, G. 1998, Astron. Astrophys. Suppl. Ser., 130, 485.
• Stetson, P.B. 1987, PASP, 99, 191.
• Stolz, B., and Schoembs, R. 1984, Astron. Astrophys., 132, 187.
• Udalski, A., and Pych, W. 1992, Acta Astron., 42, 285.
• Uemura, M., et al. 2005, Astron. Astrophys., 432, 261.
• Warner, B. 1995, "Cataclysmic Variable Stars", Cambridge University Press.