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{{Planetbox begin
| name = HIP 13044 b
}}
{{Planetbox image
| image = HIP 13044 b.jpg
| caption = 艺术家对HIP 13044 b的幻想图片
}}
{{Planetbox star
| star = [[HIP 13044]]
| constell = [[天炉座]]
| RA = {{RA|02|47|37.4423}}<ref name="SIMBAD data on HIP 13044 "/>
| DEC = {{DEC|-36|06|27.051}}<ref name="SIMBAD data on HIP 13044" />
| app_mag = 9.94<ref name="HIP 13044 at Exoplanet.eu" />
| dist_ly = 2286 ± 65
| dist_pc = 701 ± 20<ref name="HIP 13044 at Exoplanet.eu" />
| class = F2<ref name="SIMBAD data on HIP 13044" />
| mass = 0.8 ± 0.1<ref name="HIP 13044 at Exoplanet.eu" />
| radius = 6.7 ± 0.3<ref name="HIP 13044 at Exoplanet.eu" />
| temperature = 6025 ± 63<ref name="HIP 13044 at Exoplanet.eu" />
| metallicity = -2.09 ± 0.26<ref name="HIP 13044 at Exoplanet.eu" />
| age = >9<ref name="HIP 13044 at Exoplanet.eu" />
}}
{{Planetbox orbit
| semimajor = 0.116 ± 0.001<ref name="HIP 13044 at Exoplanet.eu" />
| eccentricity = 0.25 ± 0.05<ref name="HIP 13044 at Exoplanet.eu" />
| period = 16.2 ± 0.3<ref name="HIP 13044 at Exoplanet.eu" />
| arg_peri = 219.8 ± 1.8<ref name="HIP 13044 at Exoplanet.eu" />
}}
{{Planetbox character
| minimum_mass = 1.25 ± 0.05<ref name="HIP 13044 at Exoplanet.eu" />
}}
{{Planetbox discovery
| discoverers = Johny Setiawan ''等''<ref name="Setiawan et al. 2010" />
| discovery_date = 2010年11月
| discovery_method = [[视向速度]]
| discovery_status=Published
}}
{{Planetbox reference
| star=HIP+13044
| planet=b
}}
{{Planetbox end}}

'''HIP 13044b''' 是一个曾经被认为存在的类似[[木星]]的[[太阳系外行星]]，围绕著离地球2000[[光年]]的[[天炉座]][[恒星]][[HIP 13044]]旋转的，它的发现于2010年11月18日宣布<ref name="Than2010-11-18" />。HIP 13044形成在另一个[[星系]]内，其于6–9亿年前被银河系吸收的时候成为[[银河系]]的一员，该星系的残余成为[[星流|珍珠星流]]。后续研究表明该行星实际上并不存在。<ref name="JonesJenkins2014">{{Cite journal|last=Jones|first=M. I.
|last2=Jenkins|first2=J. S.
|date=2014
|title=No evidence of the planet orbiting the extremely metal-poor extragalactic star HIP 13044
|journal=Astronomy & Astrophysics
|volume=562
|doi=10.1051/0004-6361/201322132
|bibcode=2014A&A...562A.129J
|arxiv=1401.0517
}}</ref>

==发现==

[[马克斯-普朗克天文研究所]]的赖纳·克莱门特说这个发现对天文学家们来说是令人兴奋的，因为这是首次发现源自在银河系外的星流的[[行星系统]]。<ref name="Bowdler2010-11-18" />这个行星的发现使用了[[欧洲南方天文台]]在[[智利]][[拉西拉天文台]]的[[MPG/ESO望远镜|MPG/ESO]]2.2米地面望远镜，通过[[视向速度]]法检测行星造成的恒星位置扯动。<ref name="Bowdler2010-11-18" />

行星的发现还可能建议需要重新考虑[[行星的形成]]与生存，因为它是首次发现的围绕很古老而且极贫金属的恒星的行星。<ref name="Wall2010-11-18" />这个行星因此挑战了核心吸积模型的星球形成理论，因为它在形成时不太可能有一个足够质量的行星核，这可能意味着它的形成是通过竞争磁盘不稳定模型的行星形成方式。<ref name="Than2010-11-18" /><ref name="Bowdler2010-11-18" /><ref name="Wall2010-11-18" /><ref name="Minogue2010-11-18" /><ref name="Spotts2010-11-18" /><ref name="Matson2010-11-18" /><ref name="Santini2010-11-18" />

== 属性 ==

这个行星的恒星HIP 13044旋转稍快，也许是因为它在其[[红巨星]]阶段吞噬了靠内的行星。<ref name="Than2010-11-18" />这个恒星现在是其生命中的晚期的[[水平分支]]阶段，在其核心进行[[3氦过程|融合氦]]的核反应。这个行星很可能曾在离恒星更远的地方绕恒星公转，而在恒星的红巨星阶段由于和恒星的外大气层摩擦而到达其当前的位置。由于恒星有望在成为[[白矮星]]之前进入另一个扩张阶段，这颗行星的最终命运是不确定的。<ref name="Than2010-11-18" /><ref name="Bowdler2010-11-18" />

== 行星的存在被否认 ==
后续的研究表明，此前检测到的由行星造成的恒星扰动实际上并不存在。可能导致这个错误的原因包括观测时较差的[[信噪比]]、以及错误的质心速度矫正。<ref name="JonesJenkins2014" />
==请参阅==
* [[銀河系外行星]]

== 引用 ==

{{Reflist
| refs =

<ref name="SIMBAD data on HIP 13044">{{cite web
| title = SIMBAD query result
| url = http://simbad.u-strasbg.fr/simbad/sim-id?protocol=html&Ident=HIP+13044
| accessdate = 2010-11-19
| archive-date = 2013-12-20
| archive-url = https://web.archive.org/web/20131220195026/http://simbad.u-strasbg.fr/simbad/sim-id?protocol=html&Ident=HIP+13044
| dead-url = no
}}</ref>

<ref name="HIP 13044 at Exoplanet.eu">{{cite web
| title = Notes for star HIP 13044
| url = http://exoplanet.eu/star.php?st=HIP+13044
| accessdate = 2010-11-19
| archive-date = 2012-01-20
| archive-url = https://web.archive.org/web/20120120215909/http://exoplanet.eu/star.php?st=HIP+13044
| dead-url = no
}}</ref>

<ref name="Setiawan et al. 2010">{{cite web
| title = A Giant Planet Around a Metal-Poor Star of Extragalactic Origin
| url = http://www.sciencemag.org/content/early/2010/11/17/science.1193342
| accessdate = 2010-11-19
| archive-date = 2010-12-16
| archive-url = https://web.archive.org/web/20101216103439/http://www.sciencemag.org/content/early/2010/11/17/science.1193342
| dead-url = no
}}</ref>

<ref name="Minogue2010-11-18">{{cite journal
| title = Alien Planet May Have Come From Another Galaxy
| last = Minogue
| first = Kristen
| date = 2010-11-18
| work = ScienceNOW
| issn = 1947-8062
| publisher = American Association for the Advancement of Science
| url = http://news.sciencemag.org/sciencenow/2010/11/alien-planet-may-have-come-from-.html
| accessdate = 2010-11-19
| deadurl = yes
| archiveurl = https://web.archive.org/web/20101119053533/http://news.sciencemag.org/sciencenow/2010/11/alien-planet-may-have-come-from-.html
| archivedate = 2010-11-19
| journal =
}}</ref>

<ref name="Than2010-11-18">{{cite web
| last = Than
| first = Ker
| title = New Planet Discovered: First Spotted Outside Our Galaxy
| work = NationalGeographic.com
| publisher = National Geographic Society
| date = 2010-11-18
| url = http://news.nationalgeographic.com/news/2010/11/101118-science-space-new-planet-discovered-outside-galaxy/
| accessdate = 2010-11-19
| archive-date = 2010-11-20
| archive-url = https://web.archive.org/web/20101120181508/http://news.nationalgeographic.com/news/2010/11/101118-science-space-new-planet-discovered-outside-galaxy/
| dead-url = no
}}</ref>

<ref name="Wall2010-11-18">{{cite web
| last = Wall
| first = Mike
| title = First Alien Planet From Another Galaxy Discovered
| date = 2010-11-18
| work = Space.com
| publisher = TechMediaNetwork
| url = http://www.space.com/scienceastronomy/alien-planet-from-another-galaxy-discovered-101118.html
| accessdate = 2010-11-19
| archive-date = 2010-11-20
| archive-url = https://web.archive.org/web/20101120014804/http://www.space.com/scienceastronomy/alien-planet-from-another-galaxy-discovered-101118.html
| dead-url = no
}}</ref>

<ref name="Bowdler2010-11-18">{{cite web
| last = Bowdler
| first = Neil
| title = 'Alien' planet detected circling dying star
| date = 2010-11-18
| work = BBC.co.uk
| publisher = BBC News
| url = http://www.bbc.co.uk/news/science-environment-11775803
| accessdate = 2010-11-19
| archive-date = 2010-11-19
| archive-url = https://web.archive.org/web/20101119051436/http://www.bbc.co.uk/news/science-environment-11775803
| dead-url = no
}}</ref>

<ref name="Spotts2010-11-18">{{cite web
| title = Found: a planet not from the Milky Way, circling a star in its death throes
| last = Spotts
| first = Pete
| date = 2010-11-18
| work = CSMonitor.com
| publisher = Christian Science Monitor
| url = http://www.csmonitor.com/Science/2010/1118/Found-a-planet-not-from-the-Milky-Way-circling-a-star-in-its-death-throes
| accessdate = 2010-11-19
| archive-date = 2010-11-20
| archive-url = https://web.archive.org/web/20101120044153/http://www.csmonitor.com/Science/2010/1118/Found-a-planet-not-from-the-Milky-Way-circling-a-star-in-its-death-throes
| dead-url = no
}}</ref>

<ref name="Matson2010-11-18">{{cite web
| last = Matson
| first = John
| title = Extragalactic Expat: Newfound Exoplanet Likely Came from Another Galaxy
| date = 2010-11-18
| work = ScientificAmerican.com
| publisher = Scientific American
| url = http://www.scientificamerican.com/article.cfm?id=extragalactic-planet
| accessdate = 2010-11-19
| archive-date = 2011-10-12
| archive-url = https://web.archive.org/web/20111012132925/http://www.scientificamerican.com/article.cfm?id=extragalactic-planet
| dead-url = no
}}</ref>

<ref name="Santini2010-11-18">{{cite web
| first = Jean-Louis
| last = Santini
| title = First glimpse of a planet from another galaxy
| date = 2010-11-18
| work = google.com
| agency = AFP
| publisher = Agence France-Presse
| url = http://www.google.com/hostednews/afp/article/ALeqM5iT02fds1gYLVCNHiWH8dE5Z3Nu5Q?docId=CNG.fff55efe3a0cf7cd78880d52a9d4b7c3.301
| accessdate = 2010-11-19
| archive-date = 2012-12-06
| archive-url = https://archive.today/20121206043748/http://www.google.com/hostednews/afp/article/ALeqM5iT02fds1gYLVCNHiWH8dE5Z3Nu5Q?docId=CNG.fff55efe3a0cf7cd78880d52a9d4b7c3.301
| dead-url = no
}}</ref>

}}

{{HIP 13044}}
[[Category:天爐座]]
[[Category:2010年发现的系外行星]]

HIP 13044b - 版本历史

imported>InternetArchiveBot：​Reformat 1 URL (Wayback Medic 2.5)) #IABot (v2.0.9.5) (GreenC bot

imported>InternetArchiveBot：Reformat 1 URL (Wayback Medic 2.5)) #IABot (v2.0.9.5) (GreenC bot