NGC 6723

NGC 6723
NGC 6723
	哈伯太空望遠鏡拍攝的NGC 6723；視場3.5′
觀測數據(J2000 曆元)
分類	VII
星座	人馬座
赤經	18h 59m 33.15s
赤緯	–36° 37′ 56.1″
距離	28.4 kly（8.7 kpc）
視星等 (V)	6.8
視直徑(V)	11′
物理性質
Mass	3.57×105 M☉
金屬量	–0.96 dex
估計年齡	13.06 Gyr
	參見：球狀星團，球狀星團表

NGC 6723是在人馬座的一個球狀星團^[6]，位置在靠近南冕座的交界處。它的視星等在6至6.8等，直徑在7和11弧分，在夏普力-索耶集中度分類法的類型為VII，星團中的恆星星等為14等。

與常見的球狀星團不同，NGC 6723具有較高的金屬量和大量年輕恆星，原始恆星僅占總數的0.363+0.017
−%^[7]。

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 Goldsbury, Ryan; et al, The ACS Survey of Galactic Globular Clusters. X. New Determinations of Centers for 65 Clusters, The Astronomical Journal, December 2010, 140 (6): 1830–1837, Bibcode:2010AJ....140.1830G, S2CID 119183070, arXiv:1008.2755 , doi:10.1088/0004-6256/140/6/1830.
^ ^3.0 ^3.1 Boyles, J.; et al, Young Radio Pulsars in Galactic Globular Clusters, The Astrophysical Journal, November 2011, 742 (1): 51, Bibcode:2011ApJ...742...51B, S2CID 118649860, arXiv:1108.4402 , doi:10.1088/0004-637X/742/1/51.
^ ^4.0 ^4.1 Data for NGC 6723. NGC/IC Project. [19 November 2013]. （原始內容存檔於15 January 2013）.
^ ^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.
^ SIMBAD Astronomical Object Database. Results for NGC 6723. [2007-04-21]. （原始內容存檔於2019-05-01）.
^ Lee, Jae-Woo, Multiple Stellar Populations of Globular Clusters from Homogeneous Ca–CN–CH Photometry. V. cn′_JWL as a Surrogate cn_JWL Index and NGC 6723, The Astrophysical Journal, 2019, 883 (2): 166, S2CID 201070324, arXiv:1908.06670 , doi:10.3847/1538-4357/ab3d34

Robert Burnham Jr, Burnham's Celestial Handbook: An observer's guide to the universe beyond the solar system, vol 3, p. 1558

外部連結

維基共享資源上的相關多媒體資源：NGC 6723
WikiSky上關於NGC 6723的內容：DSS2, SDSS, GALEX, IRAS, 氫α, X射線, 天文照片, 天圖, 文章和圖片
NGC 6723 （頁面存檔備份，存於網際網路檔案館）

天文學目錄
NGC天體表：	NGC 6721 - NGC 6722 - NGC 6723 - NGC 6724 - NGC 6725

這是一篇與星團相關的小作品。您可以透過編輯或修訂擴充其內容。

[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.

[aj140_6_1830-2] 2.0 ^2.1 Goldsbury, Ryan; et al, The ACS Survey of Galactic Globular Clusters. X. New Determinations of Centers for 65 Clusters, The Astronomical Journal, December 2010, 140 (6): 1830–1837, Bibcode:2010AJ....140.1830G, S2CID 119183070, arXiv:1008.2755 , doi:10.1088/0004-6256/140/6/1830.

[apj742_1_51-3] 3.0 ^3.1 Boyles, J.; et al, Young Radio Pulsars in Galactic Globular Clusters, The Astrophysical Journal, November 2011, 742 (1): 51, Bibcode:2011ApJ...742...51B, S2CID 118649860, arXiv:1108.4402 , doi:10.1088/0004-637X/742/1/51.

[ngcProj-4] 4.0 ^4.1 Data for NGC 6723. NGC/IC Project. [19 November 2013]. （原始內容存檔於15 January 2013）.

[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.

[simbad-6] SIMBAD Astronomical Object Database. Results for NGC 6723. [2007-04-21]. （原始內容存檔於2019-05-01）.

[7] Lee, Jae-Woo, Multiple Stellar Populations of Globular Clusters from Homogeneous Ca–CN–CH Photometry. V. cn′_JWL as a Surrogate cn_JWL Index and NGC 6723, The Astrophysical Journal, 2019, 883 (2): 166, S2CID 201070324, arXiv:1908.06670 , doi:10.3847/1538-4357/ab3d34

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