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{{noteTA
|G1=天文学
}}
{{Starbox begin
| name = HD 13445<br />Gliese 86
}}
{{Starbox observe 2s
| epoch = [[J2000.0]]
| constell = [[波江座]]<ref name=SIMBAD>{{cite web
| url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=HR+637
| title=Pulsating variable Star
| publisher=Centre de Données astronomiques de Strasbourg
| work=SIMBAD
| accessdate=2012-07-13
| archive-date=2019-06-09
| archive-url=https://web.archive.org/web/20190609135849/http://simbad.u-strasbg.fr/simbad/sim-id?Ident=HR+637
| dead-url=no
}}</ref><ref name=DATA>{{cite web
| url=http://vizier.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=5050&-corr=PK=HR&-out.max=9999&HR=637
| title=VizieR Detailed Page
| accessdate=2012-07-13
| archive-date=2018-10-01
| archive-url=https://web.archive.org/web/20181001122313/http://vizier.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=5050&-corr=PK=HR&-out.max=9999&HR=637
| dead-url=no
}}</ref>
| 星官 =
| component1 = Gliese 86 A
| ra1 = {{RA|02|10|25.93}}<ref name="van Leeuwen2007"/>
| dec1 = {{DEC|-50|49|25.4}}<ref name="van Leeuwen2007"/>
| appmag_v1 = 6.17<ref name=spectral_library_gj86A/>
| component2 = Gliese 86 B
| ra2 = {{RA|02|10|26}}
| dec2 = {{DEC|-50|49|25}}
| appmag_v2 = 
}}
{{Starbox character
| class = K1V / D?
| r-i = 0.40
| v-r = 0.45
| b-v = 0.812<ref name="van Leeuwen2007"/>
| u-b = 0.45
| variable = 
}}
{{Starbox astrometry
| radial_v = 
| prop_mo_ra = 2092.86 ± 0.27<ref name="van Leeuwen2007"/>
| prop_mo_dec = 653.21 ± 0.30<ref name="van Leeuwen2007"/>
| parallax = 92.74
| p_error = 0.32
| parallax_footnote = <ref name="van Leeuwen2007"/>
| absmag_v = 
}}
{{Starbox orbit
| reference = <ref name=Zeng>{{cite journal | doi=10.3847/1538-3881/ac8ff7 | title=The Gliese 86 Binary System: A Warm Jupiter Formed in a Disk Truncated at ≈2 au | year=2022 | last1=Zeng | first1=Yunlin | last2=Brandt | first2=Timothy D. | last3=Li | first3=Gongjie | last4=Dupuy | first4=Trent J. | last5=Li | first5=Yiting | last6=Brandt | first6=G. Mirek | last7=Farihi | first7=Jay | last8=Horner | first8=Jonathan | last9=Wittenmyer | first9=Robert A. | last10=Butler | first10=R. Paul. | last11=Tinney | first11=Christopher G. | last12=Carter | first12=Bradley D. | last13=Wright | first13=Duncan J. | last14=Jones | first14=Hugh R. A. | last15=o'Toole | first15=Simon J. | journal=The Astronomical Journal | volume=164 | issue=5 | page=188 | s2cid=252872318 | doi-access=free }}</ref>
| primary = Gliese 86 A
| name = Gliese 86 B
| axis_unitless = 23.7 au
| eccentricity = 0.429
| inclination = 126.44
| node = 234.2
}}
{{Starbox detail
| source = 
| mass = 0.79
| radius = 0.855 ± 0.005
| gravity = 
| luminosity = 
| luminosity_bolometric = 
| luminosity_visual = 
| temperature = 5188
| metal = [Fe/H] = -0.24
| rotation = 31 [[day]]s
| age = {{nowrap|2.4 × 10<sup>9</sup>}}<ref name="apj687">{{cite journal
| author=Mamajek, Eric E.; Hillenbrand, Lynne A.
| title=Improved Age Estimation for Solar-Type Dwarfs Using Activity-Rotation Diagnostics
| url=https://archive.org/details/sim_astrophysical-journal_2008-11-10_687_2/page/1264
| journal=The Astrophysical Journal | volume=687 | issue=2
| pages=1264–1293 | doi=10.1086/591785 | bibcode=2008ApJ...687.1264M |arxiv = 0807.1686 |date=November 2008}}</ref>
}}
{{Starbox catalog
| names =13 G. Eridani，CD-51 532，[[格利泽近星星表|GJ]] 86，[[SAO星表|SAO]] 232658，[[HD星表|HD]] 13445，[[Hipparcos Catalogue|HIP]] 10138，[[HR星表|HR]] 637}}
{{Starbox reference |Simbad=HR+637}}
{{Starbox end}}

'''HD 13445'''，又名'''CD-51 532'''、'''SAO 232658'''、'''HR 637'''、'''葛利斯86'''，是一個[[波江座]]的恒星系統<ref name=SIMBAD /><ref name=DATA />，视星等为6.12，位于[[銀道座標系|銀經]]275.99，[[銀道座標系|銀緯]]-61.97，其[[B1900.0]]坐标为赤經{{RA|2|6|23.7}}，赤緯{{DEC|-51|-61.97|52}}。

1998年[[歐洲南方天文台]]宣布在該恆星系統中發現一顆[[太陽系外行星]]<ref name="eso9855"/>。

== 成員星 ==
該聯星系統的主星（HD 13445 A、Gliese 86 A）是一顆[[恆星光譜|光譜類型]] K1V 的[[橙矮星]]，質量是太陽的79%，半徑則是太陽的0.86倍，光度則是太陽的35%。該恆星旁有一顆距離相當近的類木行星

伴星 HD 13445 B（Gliese 86 B）是一顆白矮星，距離主星約21天文單位，因此讓該聯星系統成為擁有系外行星的聯星中結構最緊密的系統之一<ref>{{cite journal | url=http://www.iop.org/EJ/article/0004-637X/646/1/523/64035.html | title=Two Suns in The Sky: Stellar Multiplicity in Exoplanet Systems | author=Raghavan |display-authors=etal | journal=The [[Astrophysical Journal]] | volume=646 | issue=1 | pages=523–542 | year=2006 | doi=10.1086/504823 | last2=Henry | first2=Todd J. | last3=Mason | first3=Brian D. | last4=Subasavage | first4=John P. | last5=Jao | first5=Wei‐Chun | last6=Beaulieu | first6=Thom D. | last7=Hambly | first7=Nigel C. | bibcode=2006ApJ...646..523R | arxiv=astro-ph/0603836 | access-date=2013-03-26 | archive-date=2020-04-28 | archive-url=https://web.archive.org/web/20200428162417/https://hkvalidate.perfdrive.com/captcha?ssa=1ba0b55e-0b1b-4271-8dc3-16486b421f08&ssb=za2z2m6f2adih2m541gai0c5h&ssc=http%3A%2F%2Fiopscience.iop.org%2Farticle%2F0004-637X%2F646%2F1%2F523%2F64035.html&ssd=463308223507856&sse=adb%40jciedbcleel&ssf=cabbbe92ac3fea603c4b236ce0d026e2a3a7dc24&ssg=603d6e36-3553-4bbe-a751-8be11a318fa7&ssh=cf9a8d8a-c6ab-4ba5-881e-8bda531f1e6c&ssi=193c4e08-8427-4a68-9b82-6c95a701fad8&ssj=9e871f84-d77d-4a17-97fc-901e35c24f6e&ssk=support%40shieldsquare.com&ssl=040603155946&ssm=42544857964150236107565674411659&ssn=7b26e3023f13e17498682021a6d87ba4f295192fc894-bdd8-4a27-9918e9&sso=987691c9-760ce8b2495e594392fdb2bdf1577489429cad276e99f8d4&ssp=16246728041588005526158807818302904&ssq=40203459105690637448291056473541058707772&ssr=MjA3LjI0MS4yMjYuMjMw&sss=Chrome%2F5.0%20%28iPhone%3B%20U%3B%20CPU%20iPhone%20OS%203_0%20like%20Mac%20OS%20X%3B%20en-us%29%20AppleWebKit%2F528.18%20%28KHTML%2C%20like%20Gecko%29%20Version%2F4.0%20Mobile%2F7A341%20Safari%2F528.16&sst=python-requests%2F2.23.0&ssu=Mozilla%2F5.0%20%28compatible%3B%20Googlebot%2F2.1%3B%20+http%3A%2F%2Fwww.google.com%2Fbot.html%29&ssv=p%40r3lrv11vrt%404%40&ssw=&ssx=775604223893518&ssy=mmgmgnhmafbk%40lgbibelaogjlbdl%40hhjllgjnlen&ssz=647afc3a18dc228 | dead-url=no }}</ref>。該白矮星發現於2001年，原被認為是[[棕矮星]]<ref>{{cite journal | url=http://www.aanda.org/articles/aa/full/2001/16/aadb012/aadb012.html | title=A second substellar companion in the Gliese 86 system. A brown dwarf in an extrasolar planetary system | author=Els, S. G. |display-authors=etal | journal=[[Astronomy and Astrophysics]] | volume=370 | issue=1 | pages=L1–L4 | year=2001 | doi=10.1051/0004-6361:20010298 | bibcode=2001A&A...370L...1E | access-date=2013-03-26 | archive-date=2019-06-26 | archive-url=https://web.archive.org/web/20190626032216/https://www.aanda.org/articles/aa/full/2001/16/aadb012/aadb012.html | dead-url=no }}</ref>，但在2005年的觀測結果中顯示它是白矮星，因為它的光譜並沒有代表棕矮星特徵的分子吸收線<ref>{{cite journal |bibcode=2005MNRAS.361L..15M |title=Gl86B: a white dwarf orbits an exoplanet host star|author=Mugrauer, M. and Neuhäuser, R.|journal=[[Monthly Notices of the Royal Astronomical Society|Monthly Notices of the Royal Astronomical Society: Letters]]|volume=361|issue=1|pages=L15–L19|year=2005|doi=10.1111/j.1745-3933.2005.00055.x|arxiv = astro-ph/0506311 }}</ref>。假設該白矮星的質量大約是太陽的一半，並且徑向速度觀測的線性趨勢是因為這顆伴星，它環繞主星的軌道半長軸可能是18.42天文單位，並且[[軌道離心率]]是0.3974<ref>{{cite journal |bibcode=2006A&A...459..955L |title=New constrains on Gliese 86 B. VLT near infrared coronographic imaging survey of planetary hosts|author=Lagrange, A.-M. |display-authors=etal |journal=[[Astronomy and Astrophysics]]|volume=459|issue=3|pages=955–963|year=2006|doi=10.1051/0004-6361:20054710}}</ref>。

== 行星系 ==
先前根據[[依巴谷卫星]]的[[天文測量]]資料顯示該系統中行星的[[軌道傾角]]是164.0°，質量是木星的15倍，因此被認為是[[棕矮星]]<ref>{{cite journal | url=http://www.iop.org/EJ/article/1538-4357/548/1/L57/005774.html | author=Han |display-authors=etal | title=Preliminary astrometric masses for proposed extrasolar planetary companions | journal=The [[Astrophysical Journal]] Letters | volume=548 | issue=1 | pages=L57–L60 | year=2001 | doi=10.1086/318927 | last2=Black | first2=David C. | last3=Gatewood | first3=George | bibcode=2001ApJ...548L..57H | access-date=2013-03-26 | archive-date=2009-04-29 | archive-url=https://www.webcitation.org/5gP5VrdoG?url=http://www.iop.org/EJ/article/1538-4357/548/1/L57/005774.html | dead-url=no }}</ref>。但更進一步分析顯示依巴谷卫星的天文測量資料並不足以準確到能確認亞恆星伴星的軌道，因此至今仍無法得知該行星的軌道傾角和它的[[真實質量]] <ref>{{cite journal | url=http://www.aanda.org/articles/aa/full/2001/24/aa1274/aa1274.html | title=Screening the Hipparcos-based astrometric orbits of sub-stellar objects | author=Pourbaix, D. and Arenou, F. | journal=[[Astronomy and Astrophysics]] | volume=372 | issue=3 | pages=935–944 | year=2001 | doi=10.1051/0004-6361:20010597 | bibcode=2001A&A...372..935P | arxiv=astro-ph/0104412 | access-date=2013-03-26 | archive-date=2019-06-11 | archive-url=https://web.archive.org/web/20190611092049/https://www.aanda.org/articles/aa/full/2001/24/aa1274/aa1274.html | dead-url=no }}</ref>。該行星是由[[日內瓦天文台]]的[[萊昂哈德·歐拉望遠鏡]]發現<ref>{{Cite web |url=http://obswww.unige.ch/~udry/planet/coralie.html |title=Southern Sky extrasolar Planet search Programme |accessdate=2013-03-26 |archive-date=2020-07-15 |archive-url=https://web.archive.org/web/20200715185914/http://obswww.unige.ch/~udry/planet/coralie.html |dead-url=no }}</ref>。

對 HD 13445 A 的徑向速度量測顯示即使扣除了行星的影響，仍然觀察到線性變化趨勢，這可能與它的白矮星伴星有關。

{{OrbitboxPlanet begin
| table_ref = <ref name="Butler2006"/>
}}
{{OrbitboxPlanet
| exoplanet = [[格利泽86b|b]]
| mass = >3.91 ± 0.32
| semimajor = 0.1130 ± 0.0065
| period = 15.76491 ± 0.00039
| eccentricity = 0.0416 ± 0.0072
}}
{{Orbitbox end}}

== 參考資料 ==

{{reflist|2|refs=

<ref name="Butler2006">{{cite journal | title=Catalog of Nearby Exoplanets | url=http://iopscience.iop.org/0004-637X/646/1/505/fulltext/ | last1=Butler | first1=R. P. | last2=Wright | first2=J. T. | last3=Marcy | first3=G. W. | last4=Fischer | first4=D. A. | last5=Vogt | first5=S. S. | last6=Tinney | first6=C. G. | last7=Jones | first7=H. R. A. | last8=Carter | first8=B. D. | last9=Johnson | first9=J. A. | display-authors=1 | journal=The Astrophysical Journal | volume=646 | issue=1 | pages=505–522 | year=2006 | arxiv=astro-ph/0607493 | bibcode=2006ApJ...646..505B | doi=10.1086/504701 }}</ref>

<ref name="eso9855">{{cite press release | title=Extrasolar Planet in Double Star System Discovered from La Silla | date=1998-11-24 | publisher=European Southern Observatory | location=Garching, Germany | url=http://www.eso.org/public/news/eso9855/ | accessdate=2012-12-29 | archive-date=2020-05-21 | archive-url=https://web.archive.org/web/20200521205711/https://www.eso.org/public/news/eso9855/ | dead-url=no }}</ref>

<ref name=spectral_library_gj86A>{{cite journal | url=http://www.aanda.org/index.php?option=com_article&access=standard&Itemid=129&url=/articles/aa/full/2004/05/aa3890/aa3890.html | title=Library of flux-calibrated echelle spectra of southern late-type dwarfs with different activity levels | author=C. Cincunegui and P. J. D. Mauas | journal=[[Astronomy and Astrophysics]] | volume=414 | issue=2 | pages=699–706 | year=2004 | doi=10.1051/0004-6361:20031671 | bibcode=2004A&A...414..699C | access-date=2021-02-06 | archive-date=2019-06-22 | archive-url=https://web.archive.org/web/20190622061809/https://www.aanda.org/index.php?option=com_article&access=standard&Itemid=129&url=%2Farticles%2Faa%2Ffull%2F2004%2F05%2Faa3890%2Faa3890.html | dead-url=no }}</ref>

<ref name="van Leeuwen2007">{{cite journal |title=Validation of the new Hipparcos reduction |url=http://www.aanda.org/index.php?option=com_article&access=bibcode&Itemid=129&bibcode=2007A%2526A...474..653VFUL |last1=van Leeuwen |first1=F. |journal=Astronomy and Astrophysics |volume=474 |issue=2 |pages=653–664 |year=2007 |arxiv=0708.1752 |bibcode=2007A&A...474..653V |doi=10.1051/0004-6361:20078357 |deadurl=yes |archiveurl=https://web.archive.org/web/20160402233353/http://www.aanda.org/index.php?option=com_article&access=bibcode&Itemid=129&bibcode=2007A&A...474..653VFUL |archivedate=2016-04-02 |access-date=2013-03-26 }} [http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=I/311/hip2&recno=10115 Vizier catalog entry ] {{Wayback|url=http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=I%2F311%2Fhip2&recno=10115 |date=20181001122142 }}</ref>

}}

== 外部連結 ==
* {{cite web |url=http://www.extrasolar.net/startour.asp?StarCatId=&StarId=17 |title=Gliese 86 |accessdate=2008-08-02 |work=Extrasolar Visions |publisher= |date= |deadurl=yes |archiveurl=https://web.archive.org/web/20090503171402/http://www.extrasolar.net/startour.asp?StarCatId=&StarId=17 |archivedate=2009-05-03 }}
* {{cite web |url=http://www.solstation.com/stars2/gl86.htm |title=Gliese 86 / HR 637 AB |accessdate=2008-08-02 |work=SolStation |publisher= |date= |archive-date=2007-08-09 |archive-url=https://web.archive.org/web/20070809030714/http://www.solstation.com/stars2/gl86.htm |dead-url=no }}

{{位于35-40光年范围内的恒星系统}}
{{波江座恒星}}

[[Category:波江座]]
[[Category:聯星]]
[[Category:K型主序星]]
[[Category:白矮星]]
[[Category:HD和HDE天體|13445]]
[[Category:HIP天體|10138]]
[[Category:HR天體|0637]]
[[Category:格利泽和GJ天体|0086]]
[[Category:SAO天體|232658]]
[[Category:BD、CD和CP天体|CD-51 532]]
[[Category:行星系]]

HD 13445 - 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