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NGC 1052-DF2 - 版本历史
2026-07-16T14:26:21Z
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2022-05-15T16:45:04Z
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<p><b>新页面</b></p><div>{{Infobox galaxy<br />
| name = [[NGC天體表]] 1052-DF2<br />
| image = NGC 1052-DF2 a ghostly galaxy lacking dark matter.jpg<br />
| caption = [[哈勃空间望远镜]]觀測到的NGC 1052-DF2表明該星系缺乏暗物質<ref>{{cite web|title=Hubble finds first galaxy in the local Universe without dark matter|url=https://www.spacetelescope.org/news/heic1806/|website=www.spacetelescope.org|accessdate=30 March 2018|archive-date=2018-03-30|archive-url=https://web.archive.org/web/20180330145519/https://www.spacetelescope.org/news/heic1806/}}</ref><br />
| epoch = J2000<br />
| pronounce = <br />
| constellation name = [[鲸鱼座]]<br />
| ra = {{RA|02|41|46.8}}<ref name=nature>{{cite journal |doi=10.1038/nature25767 |pmid=29595770 |bibcode=2018Natur.555..629V |arxiv=1803.10237 |title=A galaxy lacking dark matter |journal=Nature |volume=555 |issue=7698 |pages=629–632 |year=2018 |last1=Van Dokkum |first1=Pieter |last2=Danieli |first2=Shany |last3=Cohen |first3=Yotam |last4=Merritt |first4=Allison |last5=Romanowsky |first5=Aaron J. |last6=Abraham |first6=Roberto |last7=Brodie |first7=Jean |last8=Conroy |first8=Charlie |last9=Lokhorst |first9=Deborah |last10=Mowla |first10=Lamiya |last11=o'Sullivan |first11=Ewan |last12=Zhang |first12=Jielai}}</ref><br />
| dec = {{DEC|-08|24|12}}<ref name=nature/><br />
| z = <br />
| h_radial_v = <br />
| gal_v = <br />
| dist_pc = {{convert|19.0|+/-|1.7|Mpc|Mly|abbr=on|lk=on}}<ref name=nature/><br />
| group_cluster = <br />
| type = Sp...<ref name=SIMBAD/><br />
| mass = {{val|2e8}}<ref name=nature/><br />
| mass_light_ratio = <!-- In solar units --><br />
| size = <!-- In light years --><br />
| stars = <br />
| appmag_v = <br />
| appmag_b = <br />
| absmag_v = <br />
| size_v = 1.20′ × 1.12′<ref name=SIMBAD>{{cite simbad|title=LEDA 3097693|accessdate=15 April 2018}}</ref><br />
| notes = <br />
| names = {{odlist|PGC=3097693}}<ref name=SIMBAD/><br />
| references = <br />
}}<br />
'''NGC 1052-DF2'''是一个位于[[鲸鱼座]]的[[超稀疏星系]]。有人提出该星系几乎不包含任何[[暗物质]]。2019年3月20日，研究人員宣布发现了第二个缺乏暗物质的[[超稀疏星系]]，即'''NGC 1052-DF4<ref>{{Cite news|url=https://m.phys.org/news/2019-03-unusual-galaxies-defy-dark-theory.html|title=unusual galaxies defy dark theory|date=March 2019|work=Phys.org|accessdate=2021-10-18|archive-date=2019-10-08|archive-url=https://web.archive.org/web/20191008021719/https://m.phys.org/news/2019-03-unusual-galaxies-defy-dark-theory.html}}</ref>'''。<br />
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==参考文献==<br />
{{reflist}}<br />
<br />
[[Category:矮星系]]<br />
[[Category:鯨魚座]]<br />
[[Category:NGC天体]]</div>
imported>InternetArchiveBot