Curious Variables Experiment (CURVE). TT Bootis - Superhump Period Change Pattern Confirmed

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

Abstrakty

EN

We report extensive multi-station photometry of TT Boo during its June 2004 superoutburst. The amplitude of the superoutburst was about 5.5 mag and its length about 22 days. The star showed a small re-brightening starting around the 9th day of the superoutburst. During entire bright state we observed clear superhumps with amplitudes from 0.07 mag to 0.26 mag and a mean period of P_sh=0.0779589(47) days (112.261±0.007 min). The period was not constant but decreased at the beginning and the end of superoutburst and increased in the middle phase. We argue that the complicated shape of the O-C diagram is caused by real period changes rather than by phase shifts. Combining the data from two superoutbursts, 1989 and 2004, allowed us to trace the birth of the late superhumps and we conclude that it is a rather quick process lasting about one day.

Słowa kluczowe

EN

stars: individual: TT Boo; binaries: close; novae; cataclysmic variables

• Wydawca: Copernicus Foundation for Polish Astronomy
• Czasopismo: Acta Astronomica
• Rocznik: 2004
• Tom: Vol. 54, No. 3
• Strony: 233--247
• Opis fizyczny: Bibliogr. 29 poz., tab., wykr.

Twórcy

autor

Olech A.

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

autor

Cook L. M.

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

autor

Złoczewski K.

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

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

Udalski A.

• 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

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