| 词条 | GQ Lupi |
| 释义 |
| name = GQ Lupi }}{{Starbox observe | epoch = J2000.0 | constell = Lupus | ra = {{RA|15|49|12.1056}} | dec = {{DEC|−35|39|05.0540}} | appmag_v = 11.40[1] }}{{Starbox character | class = K7V[1] | b-v = 0.96[1] | u-b = | variable = T Tauri variable[2] }}{{Starbox astrometry | radial_v = | prop_mo_ra = {{val|−14.257|0.097}} | prop_mo_dec = {{val|−23.596|0.066}} | parallax = 6.5868 | p_error = 0.0473 | parallax_footnote = | absmag_v = ~5[3] }}{{Starbox detail | age = <2 million[11] | metal = | mass = 0.7[4] | radius = | rotation = | luminosity = | temperature = }}{{Starbox catalog | names = CD−35°10525, GQ Lup[1] }}{{Starbox reference | Simbad = V*+GQ+Lup | ARICNS = }}{{Starbox end}}GQ Lupi is a T Tauri variable star approximately 495 light-years away in the constellation of Lupus.[2] The star is young and has about 70% of the Sun's mass.[4] Possible planetary systemIn 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.[6] 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."[7] {{OrbitboxPlanet short| exoplanet = b | mass = 1–36[2][8] | separation = 103 ± 37[8] }} References1. ^1 2 3 {{cite simbad|title=V* GQ Lup|accessdate=June 13, 2008}} 2. ^1 2 Astrometric and photometric monitoring of GQ Lupi and its sub-stellar companion, Ralph Neuhaeuser, Markus Mugrauer, Andreas Seifahrt, Tobias Schmidt, and Nikolaus Vogt, Astronomy and Astrophysics 484, #1 (2008), pp. 281–291. {{doi|10.1051/0004-6361:20078493}}. {{Bibcode|2008A&A...484..281N}} 3. ^From parallax and apparent magnitude. 4. ^1 2 [https://www.newscientist.com/article.ns?id=dn7225 First image of exoplanet orbiting Sun-like star], Kelly Young, April 4, 2005, NewScientist.com news service. Accessed on line June 13, 2008. 5. ^1 GQ Lupi, Extrasolar Visions. Accessed on line June 13, 2008. 6. ^Is this a Brown Dwarf or an Exoplanet? New Young Sub-stellar Companion Imaged with the VLT {{webarchive|url=https://web.archive.org/web/20080507074340/http://www.eso.org/public/outreach/press-rel/pr-2005/pr-09-05.html |date=2008-05-07 }}, ESO Press Release 09/05, April 7, 2005. Accessed on line June 13, 2008. 7. ^Lists of Extrasolar Planets {{webarchive|url=https://web.archive.org/web/20131029204807/http://www.dtm.ciw.edu/boss/planets.html |date=2013-10-29 }}, IAU Working Group on Extrasolar Planets, August 28, 2006. Accessed on line June 13, 2008. 8. ^1 Planet : GQ Lup b, Extrasolar Planets Encyclopaedia. Accessed on line June 13, 2008 }} External links
5 : Planetary systems|Lupus (constellation)|T Tauri stars|K-type main-sequence stars|Objects with variable star designations |
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