A Search for long-period brightness variations of the T Tauri stars T Tau, DI Cep, and SU Aur

被引：0
作者：
N. Z. Ismailov
P. N. Shustarev
A. A. Alieva
F. N. Alimardanova
机构：
[1] Baku State University,Shamakha Astrophysical Observatory
[2] National Academy of Sciences of Azerbaijan,undefined
来源：
Astronomy Reports | 2009年 / 53卷
关键词：
97.21.+a;
D O I：
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摘要：
We have searched for protostellar or protoplanetary structures in the vicinity of young T Tauri stars using a technique that is able to distinguish long-period components of the observed light curves. We perform a statistical spectral analysis of the one-year mean light curves of three selected stars (T Tau, DI Cep, and SU Aur) and plot synthetic light curves for the most reliable period of each star. In a first approximation, the results show a good coincidence between our synthetic light curves and the original light curves, supporting the hypothesis that protostellar or protoplanetary structures are present in the studied systems. An analysis of the 0.36–20 µm spectral energy distributions of the program stars also leads to the conclusion that infrared anomalies for young stars are most likely due to thermal radiation from not-yet-formed companions in the vicinity of the star.
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页码：643 / 650
页数：7
相关论文
共 59 条
  • [1] Ghez A. M.(1993)undefined Astron. J. 106 2005-undefined
  • [2] Neugebauer G.(1966)undefined Astrophys. J. 143 1010-undefined
  • [3] Matthews K.(1973)undefined Mon. Not. R. Astron. Soc. 161 97-undefined
  • [4] Mendoza E. E.(1994)undefined Astron. J. 108 1906-undefined
  • [5] Cohen M.(1994)undefined Astron. Astrophys. Suppl. Ser. 107 9-undefined
  • [6] Herbst W.(2004)undefined Astron. Zh. 81 431-undefined
  • [7] Herbst D. K.(1991)undefined Astrophys. Space Sci. 186 283-undefined
  • [8] Grossman E. J.(2007)undefined Pis’ma Astron. Zh. 33 133-undefined
  • [9] Weinstein D.(1977)undefined Astrophys. J. 217 693-undefined
  • [10] Petrov P. P.(2004)undefined Astrophys. J. 612 496-undefined
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