Английская Википедия:30 Arietis
Шаблон:Short description Шаблон:Starbox begin Шаблон:Starbox image Шаблон:Starbox observe 2s Шаблон:Starbox character Шаблон:Starbox astrometry Шаблон:Starbox orbit Шаблон:Starbox orbit Шаблон:Starbox orbit Шаблон:Starbox detail Шаблон:Starbox catalog Шаблон:Starbox referenceШаблон:Starbox sources Шаблон:Starbox end
30 Arietis (abbreviated 30 Ari) is a 6th-apparent-magnitude multiple star system[1] in the constellation of Aries. 30 Arietis is the Flamsteed designation. 30 Arietis A and B are separated by Шаблон:Val or about Шаблон:Val at a distance of 130 light years away. The main components of both systems are both binaries with a composite spectra belonging to F-type main-sequence stars, meaning they are fusing hydrogen in their cores. The 30 Arietis system is 910 million years old, one fifth the age of the Sun.
Star system
30 Arietis A and B are separated by 38.1", corresponding to 1,500 AU at a distance of 130 light years. The pair are at almost the same distance, have very similar proper motions, and are considered almost certain to be gravitationally bound with a likely period around 34,000 years.[2] The main components of both systems are both binaries with a composite spectra belonging to F-type main-sequence stars, meaning they are fusing hydrogen in their cores.[3]
30 Arietis A is a spectroscopic binary with an orbital period of 1.1 days.[4] The primary Aa is an F-type main sequence star about 31% more massive than the Sun, while the companion Ab is a faint red dwarf only about 15% the mass of the Sun.
30 Arietis B has been reported to have a red dwarf companion at a distance of Шаблон:Val[2] and another red dwarf Bb at about Шаблон:Val.[3] In 2020, after the inclination of the planetary orbit was measured, the "planet" was found to fall in the mass range of a brown or red dwarf.[5] The more distant companion was referred to as C to distinguish it from Bb, and at about 0.5" it has been imaged using adaptive optics.[2]
30 Arietis Bb
30 Arietis Bb (sometimes abbreviated 30 Ari Bb) is a red dwarf which orbits the F-type main sequence star 30 Arietis Ba, located in a quintuple star system approximately 146 light years away in the constellation Aries. The red dwarf, initially believed to be a massive planet or brown dwarf, was announced in a paper published online on September 24, 2009. It was discovered by using precision radial velocity measurements from the echelle spectrograph installed on the Alfred-Jensch telescope in Karl Schwarzschild Observatory.[3] The star had a minimum mass of nearly 10 times that of Jupiter.[6] In 2020, after the inclination of the planetary orbit was measured to be just 4.14Шаблон:±°, the "planet" was found to fall in the mass range of red dwarf stars.[5]
See also
References
External links
Шаблон:Stars of Aries Шаблон:Sky
- ↑ Ошибка цитирования Неверный тег
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; для сносокClavin2015
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; для сносокRoberts2015
не указан текст - ↑ 3,0 3,1 3,2 Ошибка цитирования Неверный тег
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; для сносокGuenther2009
не указан текст - ↑ Ошибка цитирования Неверный тег
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; для сносокmorbey1974
не указан текст - ↑ 5,0 5,1 Ошибка цитирования Неверный тег
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; для сносокKiefer2020
не указан текст - ↑ Шаблон:Cite web
- Английская Википедия
- Aries (constellation)
- F-type main-sequence stars
- Multiple star systems
- Solar-type stars
- Flamsteed objects
- Bright Star Catalogue objects
- Henry Draper Catalogue objects
- Durchmusterung objects
- Hipparcos objects
- M-type main-sequence stars
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