Английская Википедия:HD 207129
Шаблон:Short description Шаблон:Starbox begin Шаблон:Starbox observe Шаблон:Starbox character Шаблон:Starbox astrometry Шаблон:Starbox detail Шаблон:Starbox catalog Шаблон:Starbox reference Шаблон:Starbox end
HD 207129 is a G-type pre-main-sequence star in the constellation of Grus.[1] It has an apparent visual magnitude of approximately 5.58.[1] This is a Sun-like star with the same stellar classification G2V and a similar mass. It is roughly the same age as the Sun, but has a lower abundance of elements other than hydrogen and helium; what astronomers term the star's metallicity.[2]
A debris disk has been imaged around this star in visible light using the ACS instrument on the Hubble Space Telescope; it has also been imaged in the infrared (70 μm) using the MIPS instrument on the Spitzer Space Telescope. Based on the ACS image, the disk appears to have a radius of about 163 astronomical units and to be about 30 AU wide, and to be inclined at 60° to the plane of the sky.[3]
Another star, CCDM J21483-4718B (also designated CD−47 13929 or WDS J21483-4718B), of apparent visual magnitude 8.7, has been observed 55 arcseconds away from this star,[4] but based on comparison of proper motions, it is believed to be an optical double and not physically related to its companion.[5]
References
- ↑ 1,0 1,1 Ошибка цитирования Неверный тег
<ref>; для сносокsb0не указан текст - ↑ Ошибка цитирования Неверный тег
<ref>; для сносокgeneva2не указан текст - ↑ HST and Spitzer Observations of the HD 207129 Debris Ring, John E. Krist et al., The Astronomical Journal 140, #4 (October 2010), pp. 1051-1061, Шаблон:Doi, Шаблон:Bibcode.
- ↑ CCDM J21483-4718, database entry, CCDM (Catalog of Components of Double & Multiple stars), J. Dommanget and O. Nys, second edition, 2002, VizieR database I/274.
- ↑ Notes, WDS 21483-4718, The Washington Double Star Catalog, B. D. Mason et al., version 2011-02-06, VizieR database B/wds.
- Английская Википедия
- Grus (constellation)
- G-type main-sequence stars
- Pre-main-sequence stars
- Double stars
- Henry Draper Catalogue objects
- Gliese and GJ objects
- Hipparcos objects
- Bright Star Catalogue objects
- Durchmusterung objects
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