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Add 1 book for verifiability (20251017sim)) #IABot (v2.0.9.5) (GreenC bot

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{{Planetbox begin
| name = HD 40307 f
}}
{{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 />
| 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">[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>
}}
{{Planetbox orbit
| semimajor = 0.247 [0.233, 0.258]<ref name="tuomi12" />
| eccentricity = 0.03 [0, 0.13]<ref name="tuomi12" />
| period = 51.76 [51.30, 52.26]<ref name="tuomi12" />
| semi-amp = 1.09 [0.77, 1.37]<ref name="tuomi12" />
}}
{{Planetbox character
| minimum_mass_earth = 5.2 [3.6, 6.7]<ref name="tuomi12" />
}}
{{Planetbox discovery
| discovery_date = 2012年10月28日
| discoverers = [[米科·圖米]]等人
| discovery_method = [[徑向速度]]（使用 [[HARPS]]）
| discovery_site = {{CHL}}[[拉西拉天文台]]
| discovery_status = 公布<ref name="tuomi12" />
}}
{{Planetbox reference
| star = HD+40307
| planet = g
}}
{{Planetbox end}}

'''HD 40307 f'''是一顆位於[[繪架座]]的[[太陽系外行星]]，母恆星是 [[HD 40307]]，距離地球約42光年。

==發現==
該行星是英國[[赫特福德大學]]的天文學家[[米科·圖米]]（Mikko Tuomi）和德國[[哥廷根大學]]的天文學家古勒姆·安格拉达-伊斯库德（Guillem Anglada-Escude）<ref>{{cite web |last=Murrin |first=Marc |title=Astronomers discover a potentially habitable Super-Earth HD 40307g (Infographic) |url=http://www.tech-stew.com/post/2012/11/08/Astronomers-discover-a-potentially-habitable-Super-Earth-HD40307g.aspx |date=November 8, 2012 |publisher=[[tech-stew.com]] |accessdate=November 8, 2012 |archive-url=https://web.archive.org/web/20121110203130/http://www.tech-stew.com/post/2012/11/08/Astronomers-discover-a-potentially-habitable-Super-Earth-HD40307g.aspx |archive-date=2012-11-10 |dead-url=yes }}</ref>帶領的團隊以[[歐洲南方天文台]]的[[高精度徑向速度行星搜索器]]發現<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>。

==行星性質==
該行星是從母恆星算起第五顆恆星，距離母恆星0.25天文單位（低於水星距離太陽的0.39天文單位），並且軌道離心率可忽略。

HD 40307 f 的[[質量下限]]是地球的5.2倍，而動力學模型也指出它的質量不可能更高（因此該量測值相當接近邊界值）<ref name=tuomi12/>，被認為是超級地球<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>。

即使 HD 40307 f 和母恆星距離低於水星和太陽的距離<ref>{{cite web|title=Mercury Fact Sheet|url=http://nssdc.gsfc.nasa.gov/planetary/factsheet/mercuryfact.html|publisher=[[NASA]] Goddard Space Flight Center|date=November 17, 2010|accessdate=2012-11-10|archive-date=2015-11-06|archive-url=https://web.archive.org/web/20151106171436/http://nssdc.gsfc.nasa.gov/planetary/factsheet/mercuryfact.html|dead-url=no}}</ref>，它從母恆星接收的照射量仍稍低於水星的照射量，因為母恆星光度較太陽低<ref>Tuomi, Fig 17</ref>。不過它接收到的熱量仍高於金星（類似[[格利泽581c]]），並且它的重力位高於金星，因此 HD 40307 f 更可能是「超級金星」，而非超級地球<ref>Tuomi, Fig 17 cites Fig 4 in {{cite journal | author=F. Selsis et al. |title= Habitable planets around the star Gl 581? | year=2007| journal=Astronomy & Astrophysics |arxiv=0710.5294 |volume=476, 1373}}, "100% clouds" region</ref>。

另外這個系統中的行星 b、c 和 d 被認為是從距離母恆星較遠處向內遷移了，而行星 b 被認為是質量和體積低於海王星的「次海王星」<ref name="barnes">{{cite journal|arxiv=0901.1698|author=Barnes, R., Jackson, B., Raymond, S., West, A., Greenberg, R.|title=The HD 40307 Planetary System: Super-Earths or Mini-Neptunes?|url=https://archive.org/details/sim_astrophysical-journal_2009-04-20_695_2/page/1006|journal=[[The Astrophysical Journal]]|year=2009|doi=10.1088/0004-637X/695/2/1006|volume=695|issue=2|pages=1006|bibcode=2009ApJ...695.1006B}}</ref>。因此 HD 40307 f 可能形成於距離母恆星較遠處。目前仍無法得知該行星是次海王星或者是超級金星。
{{-}}

==參考資料==
{{reflist}}

==外部連結==
* {{cite web | url=http://news.discovery.com/space/habitable-zone-exoplanet-super-earth-121107.html | title=Super-Earth Discovered in Star’s Habitable Zone | work=Exoplanets | accessdate=2012-12-04 | archive-date=2013-01-07 | archive-url=https://www.webcitation.org/6DV19ZtZP?url=http://news.discovery.com/space/habitable-zone-exoplanet-super-earth-121107.html | dead-url=no }}

{{HD 40307}}
{{2012年太空活動}}
{{Sky|05|54|04.2409|-|60|01|24.498|41.8}}

{{DEFAULTSORT:Hd 40307 f}}
[[Category:繪架座]]
[[Category:2012年發現的系外行星]]
[[Category:徑向速度法發現的系外行星]]
[[Category:超級地球]]

HD 40307 f - 版本历史

imported>InternetArchiveBot：​Add 1 book for verifiability (20251017sim)) #IABot (v2.0.9.5) (GreenC bot

imported>InternetArchiveBot：Add 1 book for verifiability (20251017sim)) #IABot (v2.0.9.5) (GreenC bot