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{{Planetbox begin
| name = HD 40307 g
}}
{{Planetbox image
|image = HD 40307 g PHL.jpg
| caption = 想象图
}}
{{Planetbox star
| star = [[HD 40307]]
| constell = [[繪架座]]
| RA = {{RA|05|54|04.2409}}<ref name=sb>{{cite web|url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=HD+40307|title=HD 40307|accessdate=18 June 2008|work=[[SIMBAD]]|publisher=[[Centre de Données astronomiques de Strasbourg]]|year=2008|archive-date=2018-07-02|archive-url=https://web.archive.org/web/20180702131640/http://simbad.u-strasbg.fr/simbad/sim-id?Ident=HD+40307|dead-url=no}}</ref>
| DEC = {{DEC|−60|01|24.498}}<ref name=sb />
| app_mag = 7.17<ref name=sb />
| dist_ly = 41.8 ± 0.3
| dist_pc = 12.83 ± 0.09<ref name=sb />
| class = K2.5V<ref name=sb />
| mass = 0.75{{±|0.03|0.04}}<ref name="geneva">[http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=V/117A/newcat&recno=3947 HD 40307] {{Wayback|url=http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=V%2F117A%2Fnewcat&recno=3947 |date=20180109063645 }}, database entry, Geneva-Copenhagen Survey of Solar neighbourhood, J. Holmberg et al., 2007, [[Centre de Données astronomiques de Strasbourg|CDS]] database [http://vizier.u-strasbg.fr/viz-bin/Cat?V/117A V/117A] {{Wayback|url=http://vizier.u-strasbg.fr/viz-bin/Cat?V%2F117A |date=20160208164929 }}, accessed November 19, 2008; described in The Geneva-Copenhagen survey of the Solar neighbourhood. Ages, metallicities, and kinematic properties of ~14 000 F and G dwarfs, B. Nordström, M. Mayor, J. Andersen, J. Holmberg, F. Pont, B. R. Jørgensen, E. H. Olsen, S. Udry, and N. Mowlavi, ''[[Astronomy and Astrophysics]]'' '''418''' (May 2004), pp. 989–1019, {{bibcode|2004A&A...418..989N}}, {{doi|10.1051/0004-6361:20035959}}.</ref>
| radius = 0.716 ± 0.010<ref name="2massphot">[http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=J/A%2bA/450/735/table2&recno=2686 HD 40307] {{Wayback|url=http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=J%2FA%2BA%2F450%2F735%2Ftable2&recno=2686 |date=20161021151600 }}, entry, [[Centre de Données astronomiques de Strasbourg|CDS]] database [http://cdsarc.u-strasbg.fr/viz-bin/Cat?J/A%2bA/450/735 J/A+A/450/735] {{Wayback|url=http://cdsarc.u-strasbg.fr/viz-bin/Cat?J%2FA%2BA%2F450%2F735 |date=20180119060617 }}; described in Effective temperature scale and bolometric corrections from 2MASS photometry, E. Masana, C. Jordi, and I. Ribas, ''Astronomy and Astrophysics'' '''450''', #2 (May 2006), pp. 735–746. {{bibcode|2006A&A...450..735M}}. {{doi|10.1051/0004-6361:20054021}}.</ref>
| temperature = 4977 ± 59<ref name="mayor08">{{cite journal|author= M. Mayor, S. Udry, C. Lovis, F. Pepe, D. Queloz, W. Benz, J.-L. Bertaux, F. Bouchy, C. Mordasini, D. Segransan|title=The HARPS search for southern extra-solar planets. XIII. A planetary system with 3 Super-Earths (4.2, 6.9, & 9.2 Earth masses)|arxiv=0806.4587|bibcode = 2009A&A...493..639M |doi = 10.1051/0004-6361:200810451|year= 2009|journal= Astronomy and Astrophysics|volume= 493|issue= 2|pages= 639–644 }}</ref>
| metallicity = −0.31 ± 0.03<ref name="mayor08" />
| age = 1.2 (≥ 0.2)<ref name="geneva" />
}}
{{Planetbox orbit
| semimajor = 0.600<ref name="tuomi12" />
| eccentricity = 0.22<ref name="tuomi12" />
| period = 197.8 ± 9.0<ref name="tuomi12" />
| semi-amp = 0.95 ± 0.3<ref name="tuomi12" />
}}
{{Planetbox character
| minimum_mass_earth = 7.1<ref name="tuomi12" />
}}
{{Planetbox discovery
| discovery_date = 2012年10月28日
| discoverers = [[Mikko Tuomi]] 等
| discovery_method = 径向速度，借助[[HARPS]]
| discovery_site = [[智利]][[拉西拉天文台]]
| discovery_status = 已公布<ref name="tuomi12" />
}}
{{Planetbox reference
| star = HD+40307
| planet = g
}}
{{Planetbox end}}
'''HD 40307 g'''，为一颗位于[[绘架座]]的[[太阳系外行星]]，位于恒星[[HD 40307]]的[[适居带]]之内，距离地球42光年。2012年10月28日，米可·托米等人借助[[欧洲南方天文台]][[HARPS]]光谱仪设备发现了该行星。<ref name="tuomi12">{{cite arXiv |last= Tuomi, Anglada-Escude, Gerlach, Jones, Reiners, Rivera, Vogt, Butler|first= Mikko, Guillem, Enrico, Hugh R. R., Ansgar, Eugenio J., Steven S., R. Paul|authorlink= |eprint= 1211.1617|title= Habitable-zone super-Earth candidate in a six-planet system around the K2.5V star HD 40307|class= astro-ph|year= 2012|version= v1|accessdate= November 8, 2012}}</ref><ref name="Space-20121107a">{{cite web |last=Wall |first=Mike |title='Super-Earth' Alien Planet May Be Habitable for Life |url=http://www.space.com/18393-alien-planet-super-earth-habitable-hd-40307g.html |date=November 7, 2012 |publisher=[[Space.com]] |accessdate=November 8, 2012 |archive-date=2020-01-07 |archive-url=https://web.archive.org/web/20200107051724/https://www.space.com/18393-alien-planet-super-earth-habitable-hd-40307g.html |dead-url=no }}</ref><ref name="Space-20121107b">{{cite web |last=Tate |first=Karl |title=Super-Earth Planet: Potentially Habitable Alien World Explained (Infographic) |url=http://www.space.com/18390-super-earth-exoplanet-habitable-zone-infographic.html |date=November 7, 2012 |publisher=[[Space.com]] |accessdate=November 8, 2012 |archive-date=2019-07-18 |archive-url=https://web.archive.org/web/20190718124333/https://www.space.com/18390-super-earth-exoplanet-habitable-zone-infographic.html |dead-url=no }}</ref>11月8日，该天文团队宣布了这一发现。<ref>{{Cite web |url=http://tech.ifeng.com/discovery/detail_2012_11/09/18992369_0.shtml |title=天文学家发现“超级地球” |accessdate=2012-11-09 |archive-date=2016-03-04 |archive-url=https://web.archive.org/web/20160304193423/http://tech.ifeng.com/discovery/detail_2012_11/09/18992369_0.shtml |dead-url=no }}</ref>

HD 40307 g与母恒星的距离接近一个天文单位，可能存在液态水。按照[[赫特福德大学]]天文学家休·琼斯的推断，该行星可能为一颗较适宜类地生命存在的星体。<ref name="Space-20121107a" />

==参考文献==
{{reflist}}

{{HD 40307}}
{{2012年太空活動}}

[[Category:繪架座]]
[[Category:太阳系外行星]]
[[Category:超級地球]]
[[Category:徑向速度法發現的系外行星]]
[[Category:適居帶內的系外行星]]
[[Category:2012年发现的系外行星]]

HD 40307 g - 版本历史

imported>Dksh1412：​/* 参考文献 */ 增加模板

imported>Dksh1412：/* 参考文献 */ 增加模板