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{{original research|time=2020-01-07T22:21:18+00:00}}
{{Starbox begin
| name = {{SIMBAD link|BPM+37093|BPM 37093}}
}}
{{Starbox observe
| epoch = [[J2000.0]] ([[International Celestial Reference System|ICRS]])
| constell = [[半人馬座]]
| ra = {{RA|12|38|49.93}}<ref name="simbad">{{SIMBAD link|BPM+37093|BPM 37093}}, query result in [[SIMBAD]]. Accessed on line April 1, 2008.</ref>
| dec = {{DEC|-49|48|01.2}}<ref name="simbad" />
| appmag_v = 14.0<ref name="simbad" />
}}
{{Starbox character
| class = DAV4.4<ref name="villanovar4">{{Cite journal |last=McCook |first=George P. |last2=Sion |first2=Edward M. |date=1999-03-01 |title=A Catalog of Spectroscopically Identified White Dwarfs |url=https://ui.adsabs.harvard.edu/abs/1999ApJS..121....1M |journal=The Astrophysical Journal Supplement Series |volume=121 |doi=10.1086/313186 |issn=0067-0049 |access-date=2022-10-08 |archive-date=2022-12-14 |archive-url=https://web.archive.org/web/20221214014056/https://ui.adsabs.harvard.edu/abs/1999ApJS..121....1M |dead-url=no }}</ref>
| variable = DAV (ZZ Ceti)<ref name="villanovar4" />
}}
{{Starbox astrometry
| radial_v = −12<ref name=villanovar4 />
| parallax = 61.0
| p_error = 9.4
| parallax_footnote = <ref name="bergeron">{{Cite journal |last=Bergeron |first=P. |last2=Leggett |first2=S. K. |last3=Ruiz |first3=María Teresa |date=2001-04-01 |title=Photometric and Spectroscopic Analysis of Cool White Dwarfs with Trigonometric Parallax Measurements |url=https://iopscience.iop.org/article/10.1086/320356 |journal=The Astrophysical Journal Supplement Series |volume=133 |doi=10.1086/320356 |issn=0067-0049 |bibcode=2001ApJS..133..413B |access-date=2022-10-08 |archive-date=2022-10-10 |archive-url=https://web.archive.org/web/20221010043353/https://iopscience.iop.org/article/10.1086/320356 |dead-url=no }}</ref>
}}
{{Starbox detail
| mass = 1.10<ref name="arxiv04">{{Cite journal |last=Kanaan |first=A. |last2=Nitta |first2=A. |last3=Winget |first3=D. E. |last4=Kepler |first4=S. O. |last5=Montgomery |first5=M. H. |last6=Metcalfe |first6=T. S. |last7=Oliveira |first7=H. |last8=Fraga |first8=L. |last9=da Costa |first9=A. F. M. |last10=Costa |first10=J. E. S. |last11=Castanheira |first11=B. G. |date=2005-03 |title=Whole Earth Telescope observations of BPM 37093: A seismological test of crystallization theory in white dwarfs |url=http://www.aanda.org/10.1051/0004-6361:20041125 |journal=Astronomy & Astrophysics |volume=432 |issue=1 |doi=10.1051/0004-6361:20041125 |issn=0004-6361 |bibcode=2005A&A...432..219K}}</ref>
| radius =
| luminosity = 0.001<ref name="bergeron">{{Cite journal |last=Bergeron |first=P. |last2=Leggett |first2=S. K. |last3=Ruiz |first3=María Teresa |date=2001-04-01 |title=Photometric and Spectroscopic Analysis of Cool White Dwarfs with Trigonometric Parallax Measurements |url=https://iopscience.iop.org/article/10.1086/320356 |journal=The Astrophysical Journal Supplement Series |volume=133 |doi=10.1086/320356 |issn=0067-0049 |bibcode=2001ApJS..133..413B |access-date=2022-10-08 |archive-date=2022-10-10 |archive-url=https://web.archive.org/web/20221010043353/https://iopscience.iop.org/article/10.1086/320356 |dead-url=no }}</ref>
| temperature = 11730 ± 350<ref name="Brassard">P. Brassard, G. Fontaine, Asteroseismology of the Crystallized ZZ Ceti Star BPM 37093: A Different View, ''Astrophysical Journal'' '''622''', #1, pp. 572–576. {{bibcode|2005ApJ...622..572B}}</ref><ref>{{Cite journal |last=Brassard |first=P. |last2=Fontaine |first2=G. |date=2005-03-01 |title=Asteroseismology of the Crystallized ZZ Ceti Star BPM 37093: A Different View |url=https://iopscience.iop.org/article/10.1086/428116 |journal=The Astrophysical Journal |volume=622 |doi=10.1086/428116 |issn=0004-637X |bibcode=2005ApJ...622..572B |access-date=2022-10-08 |archive-date=2022-10-12 |archive-url=https://web.archive.org/web/20221012214309/https://iopscience.iop.org/article/10.1086/428116 |dead-url=no }}</ref>
| metal =
| gravity = 8.81 ± 0.05<ref name=Brassard />
| rotation =
| age =
}}
{{Starbox catalog
| names = V886 Cen, V886 Centauri, GJ 2095, LFT 931, LHS 2594, LTT 4816, WD 1236-495<ref name=simbad />
}}
{{Starbox end}}

'''BPM 37093'''是一顆位於[[半人馬座]]的[[白矮星]]，距離[[地球]]50[[光年]]。被推測存在大量[[碳]]晶體的[[碳行星|碳星球]]，及後獲得足夠的證據證實。據推算，它的核心存在著1×10<sup>34</sup>[[克拉]]的[[鑽石]]，其直徑達4,000公里。

2005年的情人節前夕，美國哈佛－史密森天體物理中心的麥特考夫、英國劍橋大學的蒙哥馬利、巴西聖卡塔琳娜聯邦大學的卡南宣布發現「BPM 37093」。當時麥特考夫開玩笑說：「就算是[[比爾·蓋茲]]加上[[唐纳德·川普]]的財力，也買不起。」

四十年來，天文學家一直認為[[白矮星]]隨著溫度降低，其核心會結晶化，但確實證據始終難以觀測。麥特考夫則是從白矮星的「BPM 37093」脈動振盪著手，推算出它的核心確已結晶。五十億年之後，我們的太陽也會蛻變成一顆白矮星，再假以一段時日，今日的太陽系中心將只見一顆超級大鑽石。

==參考資料==
{{Reflist}}

==外部連結==
* [http://jumk.de/astronomie/special-stars/bpm-37093.shtml BPM 37093 (Diamond Star)]{{Wayback|url=http://jumk.de/astronomie/special-stars/bpm-37093.shtml |date=20110928045623 }}
* [http://english.pravda.ru/science/tech/26-12-2007/103178-largest_diamond-0 Largest diamond in galaxy predicts future of solar system]{{Wayback|url=http://english.pravda.ru/science/tech/26-12-2007/103178-largest_diamond-0 |date=20111102224355 }}, Pravda.ru, December 26, 2007.

{{白矮星}}

[[Category:半人马座]]
[[Category:脈動白矮星]]

BPM 37093 - 版本历史

imported>Hrs81458：​/* top */

imported>Hrs81458：/* top */