Английская Википедия:GQ Lupi

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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

GQ Lupi is a T Tauri variable star approximately 495 light-years away[1] in the constellation of Lupus.[2] The star is young and has about 70% of the Sun's mass.[3]

Possible planetary system

Файл:The Sub-Stellar Companion to GQ Lupi.jpg
VLT NACO image, taken in the Ks-band, of GQ Lupi. The feeble point of light to the right of the star is the newly found cold companion. It is 250 times fainter than the star itself and it located 0.73 arc second west. At the distance of GQ Lupi, this corresponds to a distance of roughly 100 AU. North is up and East is to the left.

In 2005, Ralph Neuhäuser and his colleagues reported a substellar object, GQ Lupi b, orbiting the star. Along with 2M1207b, this was one of the first extrasolar planet candidates to be directly imaged. The image was made with the VLT telescope at Paranal Observatory, Chile, on June 25, 2004. Depending on its mass and the definition of a planet, GQ Lupi b may or may not be considered a planet.[4] As of 2006, the International Astronomical Union Working Group on Extrasolar Planets described GQ Lupi b as a "possible planetary-mass companion to a young star."[5] GQ Lupi b is listed as "confirmed planet" as in 2020.[6]

In 2020, another low-mass companion of GQ Lupi was discovered at a separation distance of about 16 arcseconds, or 2400 AU. Designated 2MASS J15491331-3539118 under the 2MASS catalogue, it is likely a young stellar object that is gravitationally bound to its primary star. It is estimated to be approximately 15% the Sun's mass and 21% the Sun's radius. It has an effective temperature of about 3190 K, indicating that it is a red dwarf with the spectral type M4.[7]

Шаблон:OrbitboxPlanet short

References

Шаблон:Reflist

External links

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Шаблон:Stars of Lupus

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  1. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Gaia DR2 не указан текст
  2. ↑ Ошибка цитирования Неверный тег <ref>; для сносок n08 не указан текст
  3. ↑ Ошибка цитирования Неверный тег <ref>; для сносок ns не указан текст
  4. ↑ Is this a Brown Dwarf or an Exoplanet? New Young Sub-stellar Companion Imaged with the VLT Шаблон:Webarchive, ESO Press Release 09/05, April 7, 2005. Accessed on line June 13, 2008.
  5. ↑ Lists of Extrasolar Planets Шаблон:Webarchive, IAU Working Group on Extrasolar Planets, August 28, 2006. Accessed on line June 13, 2008.
  6. ↑ openexoplanetcatalogue.com GQ Lup
  7. ↑ Шаблон:Cite journal
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