NGC 6712

NGC 6712
NGC 6712
	NGC 6712, by HST
觀測數據(J2000 曆元)
分類	IX:
星座	盾牌座
赤經	18h 53m 04.32s
赤緯	–08° 42′ 21.5″
距離	26.4 kly（8.1 kpc）<
視星等 (V)	+8.69
視直徑(V)	7.2'
物理性質
Mass	9.4×104 M☉
金屬量	–0.94 dex
估計年齡	104億年
其它名稱	GCl 103, GC 4441
	參見：球狀星團，球狀星團表

NGC 6712是一個位於盾牌座球狀星團，很可能是紀堯姆·勒讓蒂於1749年7月9日調查天鷹座銀河星雲時發現的。他將其描述為“真正的星雲”，與疏散星團野鴨星團形成鮮明對比。1784年6月16日，NGC 6712由威廉·赫雪爾獨立發現，編目號為H I.47；他也首先將其歸類為圓形星雲。約翰·赫歇爾在1830年代的觀測中第一次將其描述為球狀星團。該星團似乎已有約 120億年的歷史，並且由於穿過銀盤而經歷了顯著的質量損失^[3]，因此最初的質量可能要大得多。對球狀星團來說，NGC 6712的金屬含量相當豐富^[6]。

參考資料

^ Shapley, Harlow; Sawyer, Helen B., A Classification of Globular Clusters, Harvard College Observatory Bulletin, August 1927, 849 (849): 11–14, Bibcode:1927BHarO.849...11S.
^ ^2.0 ^2.1 ^2.2 ^2.3 SIMBAD Astronomical Database. Results for NGC 6712. [2006-11-16].
^ ^3.0 ^3.1 Deras, D; Ferro, A Arellano; Lázaro, C; Fierro, I H Bustos; Calderón, J H; Muneer, S; Sunetra, Giridhar. NGC 6712: the variable star population of a tidally disrupted globular cluster.. Monthly Notices of the Royal Astronomical Society. 22 January 2020, 493 (2): 1996–2014. arXiv:2001.08306 . doi:10.1093/mnras/staa196 .
^ Marks, Michael; Kroupa, Pavel, Initial conditions for globular clusters and assembly of the old globular cluster population of the Milky Way, Monthly Notices of the Royal Astronomical Society, August 2010, 406 (3): 2000–2012, Bibcode:2010MNRAS.406.2000M, S2CID 118652005, arXiv:1004.2255 , doi:10.1111/j.1365-2966.2010.16813.x . Mass is from M_PD on Table 1.
^ ^5.0 ^5.1 Forbes, Duncan A.; Bridges, Terry, Accreted versus in situ Milky Way globular clusters, Monthly Notices of the Royal Astronomical Society, May 2010, 404 (3): 1203–1214, Bibcode:2010MNRAS.404.1203F, S2CID 51825384, arXiv:1001.4289 , doi:10.1111/j.1365-2966.2010.16373.x .
^ Yan, Zhen; Pan, Zhi-Chen; Ransom, Scott M.; Lorimer, Duncan R.; Qian, Lei; Wang, Pei; Shen, Zhi-Qiang; Li, Di; Jiang, Peng; Luo, Jin-Tao; Liu, Jie; Huang, Zhi-Peng. An Eclipsing Black Widow Pulsar in NGC 6712. The Astrophysical Journal. 2021, 921 (2): 120. Bibcode:2021ApJ...921..120Y. S2CID 237502882. arXiv:2109.06754 . doi:10.3847/1538-4357/ac25eb .

外部連結

维基共享资源上的相關多媒體資源：NGC 6712
WikiSky上关于NGC 6712的内容：DSS2, SDSS, GALEX, IRAS, 氢α, X射线, 天文照片, 天图, 文章和图片
Simbad
Webda
NGC 6712

天文學目錄
NGC天體表：	NGC 6710 - NGC 6711 - NGC 6712 - NGC 6713 - NGC 6714

[hcob849_11-1] Shapley, Harlow; Sawyer, Helen B., A Classification of Globular Clusters, Harvard College Observatory Bulletin, August 1927, 849 (849): 11–14, Bibcode:1927BHarO.849...11S.

[simbad-2] 2.0 ^2.1 ^2.2 ^2.3 SIMBAD Astronomical Database. Results for NGC 6712. [2006-11-16].

[Deras-3] 3.0 ^3.1 Deras, D; Ferro, A Arellano; Lázaro, C; Fierro, I H Bustos; Calderón, J H; Muneer, S; Sunetra, Giridhar. NGC 6712: the variable star population of a tidally disrupted globular cluster.. Monthly Notices of the Royal Astronomical Society. 22 January 2020, 493 (2): 1996–2014. arXiv:2001.08306 . doi:10.1093/mnras/staa196 .

[mnras406_3_2000-4] Marks, Michael; Kroupa, Pavel, Initial conditions for globular clusters and assembly of the old globular cluster population of the Milky Way, Monthly Notices of the Royal Astronomical Society, August 2010, 406 (3): 2000–2012, Bibcode:2010MNRAS.406.2000M, S2CID 118652005, arXiv:1004.2255 , doi:10.1111/j.1365-2966.2010.16813.x . Mass is from M_PD on Table 1.

[mnras404_3_1203-5] 5.0 ^5.1 Forbes, Duncan A.; Bridges, Terry, Accreted versus in situ Milky Way globular clusters, Monthly Notices of the Royal Astronomical Society, May 2010, 404 (3): 1203–1214, Bibcode:2010MNRAS.404.1203F, S2CID 51825384, arXiv:1001.4289 , doi:10.1111/j.1365-2966.2010.16373.x .

[Yan-6] Yan, Zhen; Pan, Zhi-Chen; Ransom, Scott M.; Lorimer, Duncan R.; Qian, Lei; Wang, Pei; Shen, Zhi-Qiang; Li, Di; Jiang, Peng; Luo, Jin-Tao; Liu, Jie; Huang, Zhi-Peng. An Eclipsing Black Widow Pulsar in NGC 6712. The Astrophysical Journal. 2021, 921 (2): 120. Bibcode:2021ApJ...921..120Y. S2CID 237502882. arXiv:2109.06754 . doi:10.3847/1538-4357/ac25eb .

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