Английская Википедия:BF Orionis

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Шаблон:Short description Шаблон:Sky Шаблон:Starbox begin Шаблон:Starbox image Шаблон:Starbox observe Шаблон:Starbox character Шаблон:Starbox astrometry Шаблон:Starbox detail Шаблон:Starbox catalog Шаблон:Starbox reference Шаблон:Starbox end

BF Orionis is a young Herbig Ae/Be star in the constellation of Orion about Шаблон:Val away, within the Orion Nebula. It is the most massive star of the small birth cluster of four stars.[1]

Properties

BF Orionis is a Herbig Ae/Be star variable similar to UX Orionis. It is still accreting mass, producing about 2Шаблон:Solar luminosity through the release of gravitational energy, and is surrounded by a massive, optically thick protoplanetary disk of 0.005Шаблон:±Шаблон:Solar mass[2] visible nearly edge-on. The brightness of the star is strongly variable, with irregular deep minima down to 13th magnitude. The variations are suspected to be partly caused by a brown dwarf or massive planet embedded in the protoplanetary disk,[3] together with very large comets.[4]

Unlike typical Herbig Ae/Be stars, 90-95% of which do not have detectable magnetic fields, BF Orionis has a fairly strong longitudinal magnetic field of −144Шаблон:± gauss.[5] It also has small (0.11 magnitude) short-period, single-mode pulsations of the Delta Scuti type.[6]

References

Шаблон:Reflist

Шаблон:Stars of Orion

  1. Шаблон:Cite arXiv
  2. Ошибка цитирования Неверный тег <ref>; для сносок Guzman2021 не указан текст
  3. Шаблон:Cite journal
  4. Шаблон:Cite journal
  5. Шаблон:Cite journal
  6. Шаблон:Cite journal