Curious Variables Experiment (CURVE). CCD Photometry of V419 Lyr in its 2006 July Superoutburst

• Autorzy: Rutkowski A. , Olech A. , Mularczyk K. , Boyd D. , Koff R. , Wiśniewski M.
• Języki publikacji: EN

Abstrakty

EN

We report extensive photometry of the dwarf nova V419 Lyr throughout its 2006 July superoutburst till quiescence. The superoutburst with amplitude of ≈3.5 mag lasted at least 15 days and was characterized by the presence of clear superhumps with a mean period of P_sh=0.089985(58) days (129.58±0.08 min). According to the Stolz-Schoembs relation, this indicates that the orbital period of the binary should be around 0.086 days i.e., within the period gap. During the superoutburst the superhump period was decreasing with the rate of P/P_sh=-24.8(2.2)×10^-5, which is one of the highest values ever observed in SU UMa systems. At the end of the plateau phase, the superhump period stabilized at a value of 0.08983(8) days. The superhump amplitude decreased from 0.3 mag at the beginning of the superoutburst to 0.1 mag at its end. In the case of V419 Lyr we have not observed clear secondary humps, which seems to be typical for long period systems.

Słowa kluczowe

EN

Stars: individual: V419 Lyr; binaries: close; novae; cataclysmic variables

• Wydawca: Copernicus Foundation for Polish Astronomy
• Czasopismo: Acta Astronomica
• Rocznik: 2007
• Tom: Vol. 57, No. 3
• Strony: 267--279
• Opis fizyczny: Bibliogr. 45 poz., tab., wykr.

Twórcy

autor

Rutkowski A.

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

autor

Olech A.

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

autor

Mularczyk K.

• Warsaw University Observatory, Al. Ujazdowskie 4, 00-478 Warszawa, Poland

autor

Boyd D.

• British Astronomical Association, Variable Star Section, West Challow OX12 9TX, England

autor

Koff R.

• Antelope Hills Observatory, 980 Antelope Drive West, Bennett, CO 80102, USA

autor

Wiśniewski M.

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

Bibliografia

• Antipin, S.V., and Pavlenko, E.P. 2002, Astron. Astrophys., 391, 565.
• Barwig, H., Kudritzki, R.P., Vogt, N., and Hunger, K. 1982, Astron. Astrophys., 114, L11.
• Berry R., and Burnell J. 2000, “The Handbook of Astronomical Image Processing”, Willmann-Bell.
• Feline, W.J., Dhillon, V.S., Marsh, T.R., and Brinkworth, C.S. 2004, MNRAS, 355, 1.
• Harvey, D., Skillman, D.R., Patterson, J., and Ringwald, F.A. 1995, P.A.S.P., 107, 551.
• Hellier, C. 2001, “Cataclysmic Variable Stars”, Springer.
• Howell, S.B., Schmidt, R., Deyoung, J.A., Fried, R., Schmeer, P., and Gritz, L. 1993, P.A.S.P., 105, 579.
• Kato, T. 1993, Publ. Astron. Soc. Japan, 45, L67.
• Kato, T., Nogami, D., Masuda, S., and Baba, H. 1998, P.A.S.P., 110, 1400.
• Kato, T., Sekine, Y., and Hirata, R. 2001, Publ. Astron. Soc. Japan, 53, 1191.
• Kato, T., and Uemura, M. 2001, IBVS, 5158.
• Kato, T. 2001, IBVS, 5104.
• Kato, T., et al. 2002, Astron. Astrophys., 395, 541.
• Kato, T. 2002, Publ. Astron. Soc. Japan, 54, 87.
• Kato, T., Nogami, D., Moilanen, M., and Yamaoka, H. 2003a, Publ. Astron. Soc. Japan, 55, 989.
• Kato, T., et al. 2003b, MNRAS, 339, 861.
• Kato, T., Bolt, G., Nelson, P., Monard, B., Stubbings, R., Pearce, A., Yamaoka, H., and Richards, T. 2003c, MNRAS, 341, 901.
• Kato, T., Uemura, M., Ishioka, R., Nogami, D., Kunjaya, C, Baba, H., and Yamaoka, H. 2004a, Publ. Astron. Soc. Japan, 56, 1.
• Kato, T., et al. 2004b, MNRAS, 347, 861.
• Katysheva, N.A., and Pavlenko, E.P. 2003, Astophysics, 46, 114.
• Kuroshkin, N.E. 1990, Peremennye Zvezdy, 17, 186.
• Mennickent, R.E., and Sterken, C. 1998, P.A.S.P., 110, 1032.
• Nogami, D., Kato, T., Masuda, S., and Hirata, R. 1995, IBVS, 4163.
• Nogami, D., Kato, T., and Masuda, S. 1998, Publ. Astron. Soc. Japan, 50, 411.
• Nogami, D., Kato, T., Baba, H., Novák, R., Lockley, J.J., and Somers, M. 2001, MNRAS, 322, 79.
• Nogami, D., et al. 2003, Astron. Astrophys., 404, 1067.
• O’Donoghue, D. 1987, Astrophys. Space Science, 136, 247.
• 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.,Wiśniewski, M., and Stachowski, G. 2004, Acta Astron., 54, 57.
• Olech, A., Złoczewski, K., Cook, L.M., Mularczyk, K., Kędzierski, P., and Wiśniewski, M. 2005, Acta Astron., 55, 237.
• Olech, A., Mularczyk, K., Kędzierski, P., Złoczewski, K., Wiśniewski, M., and Szaruga, K. 2006, Astron. Astrophys., 452, 933.
• Osaki, Y. 1996, P.A.S.P., 108, 39.
• Osaki, Y. 2005, Proc. of the Japan Academy, Series B, 81, 291.
• Patterson, J. 1979, Astron. J., 84, 804.
• Schreiber, M.R, and Lasota, J.-P. 2007, Astron. Astrophys., 473, 897.
• Schwarzenberg-Czerny, A. 1996, Astrophys. J. Letters, 460, L107.
• Smak, J. 2000, New Astron., 44, 171.
• Stetson, P.B. 1987, P.A.S.P., 99, 191.
• Stolz, B., and Schoembs, R. 1984, Astron. Astrophys., 132, 187.
• Udalski A., and Pych W. 1992, Acta Astron., 42, 285.
• Uemura, M., Kato, T., Pavlenko, E., Baklanov, A., and Pietz, J. 2001, Publ. Astron. Soc. Japan, 53, 539.
• Warner, B., O’Donoghue, D., and Wargau, W. 1989, MNRAS, 238, 73.
• Warner B. 1995, “Cataclysmic Variable Stars”, Cambridge University Press.
• Warner B. 2007, http://www.minorplanetobserver.com/MPOSoftware/MPOCanopus.htm.
• Woudt, P.A., and Warner, B. 2001, MNRAS, 328, 159.