In: Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 49, no. 2
E. Pavlenko - K. Niijima - P. Mason - N. Wells - A. Sosnovskij - K. Antonyuk - A. Simon - N. Pit - C. Littlefield - H. Itoh - S. Kiyota - T. Tordai - P. Dubovsky - T. Vanmunster - G. Stone - T. Kato - A. Sergeev - V. Godunova - E. Lyumanov - O. Antonyuk - A. Baklanov - Ju. Babina - K. Isogai - Ya. Romanyuk - V. Troianskyi - V. Kashuba
Detaily:
Rok, strany: 2019, 204 - 216
Jazyk: eng
Kľúčové slová:
accretion, accretion disks, cataclysmic variables, stars: dwarf novae, stars: individual: ASASSN-18fk
URL originálneho zdroja: http://www.astro.sk/caosp/Eedition/Abstracts/2019/Vol_49/No_2/pp204-216_abstract.html
O článku:
We present the result of a multi-longitude campaign on the photometric study of the dwarf nova ASASSN-18fk during its superoutburst in 2018. It was observed with 18 telescopes at 15 sites during ∼ 70 nights within a three-month interval. Observations covered the main outburst, six rebrightenings and 50-d decline to a near-quiescent state. We identify ASASSN-18fk as а WZ Sge-type dwarf nova with multiple rebrightenings and show the evolution of the 0.06-d superhump period over all stages of the superoutburst. A strong 22-min brightness modulation that superimposed on superhumps is found during rebrightenings and decline. Some evidence of this modulation in a form of a sideband signal is detected during the very onset of the outburst. We interpret the 22-min modulation as a spin period of the white dwarf and suggest that ASASSN-18fk is a good candidate for a superhumping intermediate polar.
Ako citovať:
ISO 690:
Pavlenko, E., Niijima, K., Mason, P., Wells, N., Sosnovskij, A., Antonyuk, K., Simon, A., Pit, N., Littlefield, C., Itoh, H., Kiyota, S., Tordai, T., Dubovsky, P., Vanmunster, T., Stone, G., Kato, T., Sergeev, A., Godunova, V., Lyumanov, E., Antonyuk, O., Baklanov, A., Babina, J., Isogai, K., Romanyuk, Y., Troianskyi, V., Kashuba, V. 2019. ASASSN-18fk: A new WZ Sge-type dwarf nova with multiple rebrightenings and a new candidate for a superhumping intermediate polar. In Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 49, no.2, pp. 204-216. 1335-1842.
APA:
Pavlenko, E., Niijima, K., Mason, P., Wells, N., Sosnovskij, A., Antonyuk, K., Simon, A., Pit, N., Littlefield, C., Itoh, H., Kiyota, S., Tordai, T., Dubovsky, P., Vanmunster, T., Stone, G., Kato, T., Sergeev, A., Godunova, V., Lyumanov, E., Antonyuk, O., Baklanov, A., Babina, J., Isogai, K., Romanyuk, Y., Troianskyi, V., Kashuba, V. (2019). ASASSN-18fk: A new WZ Sge-type dwarf nova with multiple rebrightenings and a new candidate for a superhumping intermediate polar. Contributions of the Astronomical Observatory Skalnaté Pleso, 49(2), 204-216. 1335-1842.
O vydaní:
Vydavateľ: Astronomical Institute, Slovak Academy of Sciences
Publikované: 1. 5. 2019
Verejná licencia:
