Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:We present the results of our infrared observations of WR 140 (=V1687 Cyg) in 2001-2010. Analysis of the observations has shown that the J brightness at maximum increased near the periastron by about 0 m .3; the M brightness increased by ˜2 m in less than 50 days. The minimum J brightness and the minimum L and M brightnesses were observed 550-600 and 1300-1400 days after the maximum, respectively. The JHKLM brightness minimum was observed in the range of orbital phases 0.7-0.9. The parameters of the primary O5 component of the binary have been estimated to be the following: R(O5) ≈ 24.7 R sun, L(O5) ≈ 8 × 105 L sun, and M bol(O5) ≈ -10 m . At the infrared brightness minimum, T g ˜ 820-880 K, R g ≈ 2.6 × 105 R sun, the optical depth of the shell at 3.5 µm is ˜5.3 × 10-6, and its mass is ≈1.4 × 10-8 M sun. At the maximum, the corresponding parameters are ˜1300 K, 8.6 × 104 R sun, ˜2 × 10-4, and ˜6 × 10-8 M sun; the mean rate of dust inflow (condensation) into the dust structure is ˜3.3 × 10-8 M sun yr-1. The mean escape velocity of the shell from the heating source is ˜103 km s-1 and the mean dispersal rate of the shell is ˜1.1 × 10-8 M sun yr-1.