ULTRAVIOLET SPECTRUM VARIABILITY OF BP TAU

Автор(и)

  • N. Z. Ismailov Baku State University, Shamakha Astrophysical Observatory NAS of Azerbaijan, Азербайджан
  • F. N. Alimardanova Shamakha Astrophysical Observatory NAS of Azerbaijan, Азербайджан
  • G. R. Baheddinova Shamakha Astrophysical Observatory NAS of Azerbaijan, Азербайджан
  • H. N. Adygezalzade Baku State University, Азербайджан

DOI:

https://doi.org/10.18524/1810-4215.2010.23.84171

Ключові слова:

Pre-Main Sequence Stars, UV spectrum, variability, individual, BP Tau

Анотація

Results of the ultraviolet IUE archive spectrum researches of classic T Tauri type star BP Tau had been presented. Spectroscopic parameters of mainly strong emission lines were measured. On the more full massive which had been created on the intensity values of the emission doublet MgII λ 2800Å a variability with period P = 8.275 ± 0.005 days with high confidence level was obtained. There is some group of lines, intensities of emission lines for which were showed decreasing for more than 13 years of time interval. As a rule, lines with high potential of excitation related to the first group. More probable, such lines shows periodic variability. It is showed that we have as a minimum two local physical conditions of matter in the circumstellar disk of the star.

Посилання

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Опубліковано

2010-11-23

Номер

Том 23 (2010)

Розділ

Статті

Ліцензія

Авторське право (c) 2016 Odessa Astronomical Publications

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Ця робота ліцензується відповідно до Creative Commons Attribution-NonCommercial 4.0 International License.

Відповідно Закону України про авторське право і суміжні права N 3792-XII від 23 грудня 1993 року