Английская Википедия:HD 192685

Материал из Онлайн справочника
Перейти к навигацииПерейти к поиску

Шаблон:Short description 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

HD 192685, also known as QR Vulpeculae or HR 7739, is a Be star about 1,000 ly away in the Vulpecula constellation. It is visible to the naked eye.

Description

Файл:QRVulLightCurve.png
The main plot is a visual band light curve for QR Vulpeculae, adapted from Pavlovski et al. (1983),[1] showing a sudden brightening. The inset plot, adapted from Lefèvre et al. (2009),[2] shows the periodic variability.

HD 192685 varies slightly in brightness and is classified as a γ Cassiopeiae variable.[3]

From October to December 1982 the Hydrogen alpha absorption line increased in emission strength by 30%.[1] The line is partially filled by redshifted emission.[4]

HD 192685 has excess infrared emissions (12-100 μm) which are interpreted to be free-free radiation in the gas surrounding the star.[5]

Companions

It has at least one companion with separation 0.55" and magnitude 7.55,[6] and may also be a long-period spectroscopic binary.[7]

Шаблон:Clear left

References

Шаблон:Reflist

External links

Шаблон:Stars of Vulpecula

  1. 1,0 1,1 Шаблон:Cite journal
  2. Ошибка цитирования Неверный тег <ref>; для сносок Lefevre не указан текст
  3. Ошибка цитирования Неверный тег <ref>; для сносок gcvs не указан текст
  4. Шаблон:Cite journal
  5. Шаблон:Cite journal
  6. Шаблон:Cite journal Vizier catalog entry
  7. Шаблон:Cite journal Vizier catalog entry