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{{Infobox open cluster
|name=IC 2602
|image=[[File:The Southern Pleiades (IC 2602).jpg|250px]]
|caption=
|epoch=[[J2000]]
|constellation=[[船底座]]|ra={{RA|10|42|57.5}}<ref name=ned>{{cite web|url=http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=IC+2602&extend=no&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES|title=NED results for object IC 2602|access-date=23 January 2017|publisher=[[National Aeronautics and Space Administration]] / [[Infrared Processing and Analysis Center]]|archive-date=2020-01-04|archive-url=https://web.archive.org/web/20200104000052/http://ned.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=IC+2602&extend=no&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES|dead-url=no}}</ref>
|dec={{DEC|-64|23|39}}
|dist_pc=149 pc
|dist_ly=486 ly<ref name="SIMBAD"/>
|appmag_v=1.9<ref name="seds">{{cite web |title=IC 2602 - SEDS Messier Database |url=https://spider.seds.org/ngc/ngc.cgi?IC+2602 |access-date=23 January 2016 |archive-date=2023-12-31 |archive-url=https://web.archive.org/web/20231231053504/https://spider.seds.org/ngc/ngc.cgi?IC+2602 |dead-url=no }}</ref>
|size_v=50{{prime}} × 50{{prime}}
|mass_msol=
|age=13.7 M.yr<sup>−1</sup>
|notes=
|names=Theta Carinae Cluster, [[科德韋爾深空天體表|Caldwell]] 102, [[科林德目錄|Cr]] 229, [[菲利伯特·雅克·梅洛特|Mel]] 102, VDBH 103<ref name=SIMBAD>{{cite simbad|title=IC 2602}}</ref>
}}

'''IC 2602'''，又称为'''南七姐妹星团'''或'''船底座θ星团'''，是一个位于[[船底座]]的[[疏散星团]]。这个星团距离[[地球]]约479[[光年]]，[[裸眼]]可见。

==特質==
IC 2602表面亮度达1.9等，比[[昴星团]]暗弱70%，总共包含60颗恒星。星团中最明亮的是[[南船三]]，视星等约2.74等。其他成员恒星视星等在5等左右。

IC 2602跨越天空一个相当大的面积，大约50角分，所以最好使用大型双筒望远镜或天文望远镜接广角目镜观看。IC 2602被认为与疏散星团IC2391具有相同年龄<ref>
{{cite journal|title=Rotational Velocities and Chromospheric/Coronal Activity of Low-Mass Stars in the Young Open Clusters IC 2391 and IC 2602|url=https://archive.org/details/sim_astrophysical-journal_1997-04-20_479_2/page/776|author=Stauffer, J.R.|journal=Astrophysical Journal|volume=479|issue=2|pages=776|bibcode=1997ApJ...479..776S|doi=10.1086/303930|date=1997|display-authors=1|last2=Hartmann|first2=Lee W.|last3=Prosser|first3=Charles F.|last4=Randich|first4=Sofia|last5=Balachandran|first5=Suchitra|last6=Patten|first6=Brian M.|last7=Simon|first7=Theodore|last8=Giampapa|first8=Mark}}
</ref>。通过锂元素衰变测定他们年龄有50亿年 <ref>
{{cite journal|title=Spectroscopy of Very Low Mass Stars and Brown Dwarfs in IC 2391: Lithium Depletion and Hα Emission|author=Barrado y Navascues, D., Stauffer, J.R., & Jayawardhana, R.|date=2002|journal=Astrophysical Journal|volume=614|issue=1|pages=386–397|bibcode=2004ApJ...614..386B|doi=10.1086/423485|arxiv = astro-ph/0406436 }}
</ref>。

==歷史==
1751年3月3日，[[法国]][[天文学家]][[拉卡伊]]于[[南非]][[好望角]]首次发现該星團<ref>{{Cite journal |last=Jones |first=K. G. |date=March 1969 |title=The Search for the Nebulae - VI |journal=Journal of the British Astronomical Association |volume=79 |page=213 - 222 |bibcode=1969JBAA...79..213J}}</ref>。

==成員==
[[南船三]]是疏散星團中最亮的恆星，視星等為 +2.74。南船三被稱為鑽石十字星群的一部分，經常被誤認為是南十字星座中的南十字星群。

[[南船二]]是另一顆三等星，也是IC 2602的成員，儘管它位於主要恆星群外圍，視星等變化範圍為3.22至3.55等。

該星團的其他成員均為五等星，但有幾顆是肉眼可見的天體，包括HR 4196、HR 4204、HD 93194、HR 4219、HR 4220、HR 4222、HD 92536 、HD 93738和船底座V364。

{| class="wikitable sortable"
|+'''IC 2602最亮恆星'''
!名稱
![[視星等]]<ref name=":0">{{Cite web |title=Gaia Archive |url=https://gea.esac.esa.int/archive/ |access-date=2022-12-24 |website=gea.esac.esa.int |archive-date=2016-09-03 |archive-url=https://web.archive.org/web/20160903235026/https://gea.esac.esa.int/archive/ |dead-url=no }}</ref>
![[恆星光譜]]<ref>{{Cite web |title=Theta Carinae |url=https://simbad.u-strasbg.fr/simbad/sim-id |access-date=2022-12-24 |website=simbad.u-strasbg.fr |archive-date=2022-02-17 |archive-url=https://web.archive.org/web/20220217073522/https://simbad.u-strasbg.fr/simbad/sim-id |dead-url=no }}</ref>
!距離 (pc)
|-
|[[南船三]]
|2.735
|style="background:#{{Color temperature|20000|hexval}};"|B0Vp
|142<ref>{{Cite journal |last=Whitman |first=Alan |date=June 1998 |title=At The Eyepiece: Eclipse-Chasing Perfection - The Caribbean |url=https://archive.org/details/sim_journal-of-the-royal-astronomical-society-of-canada_1998-06_92_3/page/158 |journal=Journal of the Royal Astronomical Society of Canada |volume=92 |page=158 |bibcode=1998JRASC..92..158W}}</ref>
|-
|[[南船二]]
|3.247
|style="background:#{{Color temperature|20000|hexval}};"|B4Vne
|104.645<ref name=":0" />
|-
|HR 4204
|5.719
|style="background:#{{Color temperature|20000|hexval}};"|B3IV/V
|309.598<ref>{{Cite web |title=Catalogues - Hipparcos - Cosmos |url=https://www.cosmos.esa.int/web/hipparcos/catalogues |access-date=2022-12-24 |website=www.cosmos.esa.int |archive-date=2024-04-07 |archive-url=https://web.archive.org/web/20240407211226/https://www.cosmos.esa.int/web/hipparcos/catalogues |dead-url=no }}</ref><ref>Equated from parallax in [[Milliarc-second|milliarcseconds]] (mas).</ref>
|-
|HR 4219
|5.297
|style="background:#{{Color temperature|20000|hexval}};"|B6Vnn
|156.674<ref name=":0" />
|-
|HR 4222
|4.807
|style="background:#{{Color temperature|20000|hexval}};"|B4V
|154.007<ref name=":0" />
|-
|HD 92536
|6.313
|style="background:#{{Color temperature|20000|hexval}};"|B8V
|156.823<ref name=":0" />
|-
|[[HD 93194]]
|4.777
|style="background:#{{Color temperature|20000|hexval}};"|B3/5Vn
|169.146<ref name=":0" />
|-
|HD 93738
|8.571
|style="background:#{{Color temperature|20000|hexval}};"|B9.5V
|417.168<ref name=":0" />
|-
|V364 Carinae
|5.465
|style="background:#{{Color temperature|8750|hexval}};"|ApSi
|160.013<ref name=":0" />
|-
|[[HD 92938]]
|4.758
|style="background:#{{Color temperature|20000|hexval}};"|B3V
|140.634<ref name=":0" />
|}

==参考文献==
* [http://www.space.com/spacewatch/spacewatch.html Space.com]{{Wayback|url=http://www.space.com/spacewatch/spacewatch.html |date=20010909150238 }}
{{Reflist}}
== 外部链接 ==
* [https://web.archive.org/web/20050510032738/http://www.seds.org/Messier/xtra/ngc/i2602.html The Southern Pleaides @ SEDS IC天体页面]

{{科德韦尔天体}}

[[Category:船底座|I]]
[[Category:IC天体|I]]
[[Category:疏散星团|I]]
[[Category:科德韦尔天体|102]]

IC 2602 - 版本历史

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

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