2025年1月18日 (六) 01:51 imported>Hikaru Genji

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{{Infobox open cluster
| name =
| image = Camelopardalis constellation map.svg|300px
| caption = NGC 1502的位置（以圓圈標示）
| credit =
| epoch = [[J2000]]
| constellation = [[鹿豹座]]
| ra = {{RA|04|07|48.96}}<ref name=Cantat-Gaudin_Anders_2020/>
| dec = {{DEC|+62|19|55.2}}<ref name=Cantat-Gaudin_Anders_2020/>
| dist_ly = {{cvt|1058.4|pc|ly|order=flip|lk=on}}<ref name=Cantat-Gaudin_Anders_2020/><br/>{{val|3643|313|290|u=ly|fmt=commas}} ({{val|1117|96|89|u=pc|fmt=commas}})<ref name=Topasna_et_al_2018/>
| dist_pc =
| appmag_v = 6.0<ref name=O'Meara2007/>
| size_v = {{val|9.7|u=arcminute}}<ref name=Cantat-Gaudin_Anders_2020/>
| radius_ly = {{cvt|1.7|pc|ly|order=flip|lk=off}}<ref name=Tripathi_et_al_2013/>
| mass_msol = 
| age = 5 Myr<ref name=Topasna_et_al_2018/>
| notes = 
| names = NGC 1502,<ref name="Simbad" /> [[Collinder catalogue|Cr]] 45
}}

[[File:NGC 1502 2MASS.jpg|thumb|right|[[紅外線]]所見的NGC 1502。]]

'''NGC 1502'''是一個年輕<ref name=Michalska_et_al_2009/>、大約有60顆恆星的[[疏散星團]]<ref name=O'Meara2007/>。它位於[[鹿豹座]]，是[[威廉·赫歇爾]]在1787年11月3日發現的<ref name=Seligman />。它的[[視星等]]為6.0，因此肉眼隱約可見<ref name=O'Meara2007/>。該集群的距離太陽大約{{val|3500|u=光年|fmt=commas}}<ref name=Cantat-Gaudin_Anders_2020/><ref name=Topasna_et_al_2018/>，位於移動星群{{link-en|鹿豹座OB1星協|Camelopardalis OB1}}的外邊緣，可能是[[獵戶臂]]的一部分<ref name=Topasna_et_al_2018/>。被稱為[[甘伯串珠]]的[[星群]]似乎"流入"了NGC 1502，但這只是恆星排列上的巧合<ref name=Thompson2007/>。

NGC 1502的[[疏散星团#型態和分類|川普勒分類]]是II 3 p，II表示有向中心凝聚的現象，3 表示亮度範圍大，即少數恆星非常明亮，和其餘恆星之間的差距很大，且多數的星都是黯淡的，p 表示可見的恆星數量少於50顆，但現在已發現超過60顆恆星。的疏散星團表示亮度範圍較寬的星團（P）人口稀少（3）。沒有明確的[[主序轉折點]]，因此估計年齡範圍從五百萬年到一千五百萬年不等<ref name=Michalska_et_al_2009/>。由於[[星際塵埃]]，它嚴重變紅<ref name=Tripathi_et_al_2013/>。星團中最亮的候選成員之一是[[食雙星]]鹿豹座SZ，它是組成視[[雙星]]ADS 2984的部分<ref name=Topasna_et_al_2018/>。星團成員中有11顆[[變星]]和4顆變星候選者，包括一顆[[仙王座β型變星]]，兩顆週期性B型變星，2-3顆食變星和一顆[[天琴座RR型變星]]<ref name=Michalska_et_al_2009/>。星團的五顆成員是[[特殊恆星#Sn星|化學性質奇特星]]<ref name=Paunzen_et_al_2005/>。

== 相關條目 ==
* [[鹿豹座α]]：可能從這個星團彈出的[[恆星運動學#速逃星|速逃星]]<ref name=Michalska_et_al_2009/>。

== 參考資料 ==
{{Reflist|refs=

<ref name=Simbad>{{cite simbad
| title=NGC 1502 | access-date=2022-01-10 }}</ref>

<ref name=O'Meara2007>{{cite book
| title=Herschel 400 Observing Guide
| first=Steve | last=O'Meara | date=2007
| page=35 | isbn=9780521858939
| publisher=Cambridge University Press
| url=https://www.google.com/books/edition/Herschel_400_Observing_Guide/Nyh9fAC_tpIC?hl=en&gbpv=1&pg=PA35 }}</ref>

<ref name=Tripathi_et_al_2013>{{cite journal
| title=Photometric study of Galactic open cluster NGC 2129, NGC 1502 and King 12
| display-authors=1 | last1=Tripathi | first1=A.
| last2=Pandey | first2=U. S. | last3=Kumar | first3=Brijesh
| journal=Bulletin of the Astronomical Society of India
| volume=41 | issue=3 | page=209
| date=September 2013 | bibcode=2013BASI...41..209T }}</ref>

<ref name=Michalska_et_al_2009>{{cite journal
| title=A CCD Search for Variable Stars of Spectral Type B in the Northern Hemisphere Open Clusters. VII. NGC 1502
| last1=Michalska | first1=G. | last2=Pigulski | first2=A.
| last3=Stęlicki | first3=M. | last4=Narwid | first4=A.
| display-authors=1 | journal=Acta Astronomica
| volume=59 | issue=4 | pages=349–370 | date=December 2009
| arxiv=0910.3672 | bibcode=2009AcA....59..349M }}</ref>

<ref name=Paunzen_et_al_2005>{{cite journal
| title=CCD photometric search for peculiar stars in open clusters. VI. NGC 1502, NGC 3105, Stock 16, NGC 6268, NGC 7235 and NGC 7510
| last1=Paunzen | first1=E. | last2=Netopil | first2=M.
| last3=Iliev | first3=I. Kh. | last4=Maitzen | first4=H. M.
| last5=Claret | first5=A. | last6=Pintado | first6=O. I.
| display-authors=1 | journal=Astronomy and Astrophysics
| volume=443 | issue=1 | pages=157–162
| date=November 2005 | doi=10.1051/0004-6361:20053287
| arxiv=astro-ph/0508151 | bibcode=2005A&A...443..157P | s2cid=17585037 }}</ref>

<ref name=Thompson2007>{{cite book
| title=Illustrated Guide to Astronomical Wonders, From Novice to Master Observer
| first1=Robert | last1=Thompson | first2=Barbara | last2=Thompson
| date=2007 | page=111 | isbn=9780596526856
| publisher=O'Reilly Media
| url=https://www.google.com/books/edition/Illustrated_Guide_to_Astronomical_Wonder/ymt9nj_uPhwC?hl=en&gbpv=1&pg=PA111 }}</ref>

<ref name=Topasna_et_al_2018>{{cite journal
| title=Interstellar polarization and extinction towards the young open cluster NGC 1502
| display-authors=1 | last1=Topasna | first1=G. A.
| last2=Kaltcheva | first2=N. T. | last3=Paunzen | first3=E.
| journal=Astronomy & Astrophysics
| volume=615 | id=A166 | pages=16 | date=August 2018
| doi=10.1051/0004-6361/201731903 | bibcode=2018A&A...615A.166T | doi-access=free }}</ref>

<ref name=Cantat-Gaudin_Anders_2020>{{cite journal
| title=Clusters and mirages: cataloguing stellar aggregates in the Milky Way
| last1=Cantat-Gaudin | first1=T. | last2=Anders | first2=F.
| journal=Astronomy & Astrophysics
| volume=633 | id=A99 | pages=22
| date=January 2020 | doi=10.1051/0004-6361/201936691
| arxiv=1911.07075 | bibcode=2020A&A...633A..99C | s2cid=208138247 }}</ref>

<ref name=Seligman>{{cite web | last=Seligman | first=Courtney | title=Celestial Atlas: NGC Objects: NGC 1500 - 1549 | url=http://cseligman.com/text/atlas/ngc15.htm#1502 | website=cseligman.com | access-date=2022-01-10 | archive-date=2023-05-28 | archive-url=https://web.archive.org/web/20230528000346/https://cseligman.com/text/atlas/ngc15.htm#1502 | dead-url=no }}</ref>

}}

== 外部連結 ==
* {{Commons category-inline}}
* {{WikiSky}}

{{Ngc20}}
{{鹿豹座}}
{{Sky|04|07|48|+|62|20|00|1}}
__NOTOC__
{{DEFAULTSORT:NGC 1502}}
[[Category:NGC天體|1502]]
[[Category:鹿豹座]]
[[Category:威廉·赫歇爾發現的天體]]
[[Category:疏散星團]]

NGC 1502 - 版本历史

2025年1月18日 (六) 01:51 imported>Hikaru Genji