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V1057 Лебедя (V1057 Cyg) – неправильная пе … V1057 Лебедя (V1057 Cyg) – неправильная переменная звезда в созвездии Лебедя, фуор. Бывшая звезда типа Т Тельца (спектральный класс К), которая в конце 1969 г. увеличила блеск более чем на 5m. После вспышки звезда имела спектральный класс А1 (в 1972 г. её спектральный класс был F). Она во многом подобна FU Ориона и принадлежит к звёздам, находящимся на стадии эволюции, предшествующей главной последовательности, её масса больше двух солнечных. Эта звезда является источником инфракрасного излучения и эмиссии ОН и СО.инфракрасного излучения и эмиссии ОН и СО.
, 天鵝座V1057 (V1057 Cyg) 是位於天鵝座內的一顆獵戶FU型的變星。它的光譜類型是F，視星等大約是11.660 。它是被發現的第二顆獵戶座FU型變星。
, V1057 Cygni is a suspected binary star sys … V1057 Cygni is a suspected binary star system in the northern constellation of Cygnus. It is a variable star of the FU Orionis-type, and was the second FU Orionis-type variable to be discovered. The system is located at a distance of approximately 3,000 light years from the Sun, in the North America Nebula. It has an apparent visual magnitude of around 12.4. The initial classification of the primary was as a young T Tauri star. During 1969–1970 it underwent a nova-like outburst, increasing in brightness by five magnitudes and emitting a strong mass outflow. For the next ten years the brightness stayed at a plateau before decreasing rapidly in the mid–1990s, accompanied by a change in its spectrum. As of 2013, it is 1.5 magnitudes brighter than it was before the nova-like event. The mass of FU Ori objects is estimated to be in the range of 0.3–0.7 M☉. A faint binary companion was discovered in 2016, and designated component B. It is located at a projected separation of 30±5 AU from the primary, with a possible orbital period of ~300 years. The 1970 outburst of the primary may have been caused by torque of its accretion disk by the companion.ue of its accretion disk by the companion.
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V1057 Лебедя (V1057 Cyg) – неправильная пе … V1057 Лебедя (V1057 Cyg) – неправильная переменная звезда в созвездии Лебедя, фуор. Бывшая звезда типа Т Тельца (спектральный класс К), которая в конце 1969 г. увеличила блеск более чем на 5m. После вспышки звезда имела спектральный класс А1 (в 1972 г. её спектральный класс был F). Она во многом подобна FU Ориона и принадлежит к звёздам, находящимся на стадии эволюции, предшествующей главной последовательности, её масса больше двух солнечных. Эта звезда является источником инфракрасного излучения и эмиссии ОН и СО.инфракрасного излучения и эмиссии ОН и СО.
, V1057 Cygni is a suspected binary star sys … V1057 Cygni is a suspected binary star system in the northern constellation of Cygnus. It is a variable star of the FU Orionis-type, and was the second FU Orionis-type variable to be discovered. The system is located at a distance of approximately 3,000 light years from the Sun, in the North America Nebula. It has an apparent visual magnitude of around 12.4. apparent visual magnitude of around 12.4.
, 天鵝座V1057 (V1057 Cyg) 是位於天鵝座內的一顆獵戶FU型的變星。它的光譜類型是F，視星等大約是11.660 。它是被發現的第二顆獵戶座FU型變星。
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V1057 Лебедя
, 天鵝座V1057
, V1057 Cygni
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