NGC 6723

NGC 6723
NGC 6723 by Hubble Space Telescope; 3.5′ view
Observation data (J2000 epoch)
ClassVII[1]
ConstellationSagittarius
Right ascension18h 59m 33.15s[2]
Declination–36° 37′ 56.1″[2]
Distance28.4 kly (8.7 kpc)[3]
Apparent magnitude (V)6.8[4]
Apparent dimensions (V)11′[4]
Physical characteristics
Mass3.57×105[3] M☉
Metallicity = –0.96[5] dex
Estimated age13.06 Gyr[5]
See also: Globular cluster, List of globular clusters

NGC 6723, also known as the Chandelier Cluster,[6] is a globular cluster[7] in the constellation Sagittarius. Its magnitude is given as between 6 and 6.8, and its diameter is between 7 and 11 arcminutes. It is a class VII cluster with stars of magnitude 14 and dimmer. It is near the border of Sagittarius and Corona Australis.

Unlike common globular clusters, NGC 6723 has an enhanced metallicity and a large fraction of younger stars, with primordial stars accounting for only 0.363±0.017 % of the total.[8]

Map showing location of NGC 6723
  1. ^ Cite error: The named reference hcob849_11 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference aj140_6_1830 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference apj742_1_51 was invoked but never defined (see the help page).
  4. ^ a b "Data for NGC 6723". NGC/IC Project. Archived from the original on 15 January 2013. Retrieved 19 November 2013.
  5. ^ a b Cite error: The named reference mnras404_3_1203 was invoked but never defined (see the help page).
  6. ^ Stoyan, Ronald; Schurig, Stephan (2014). interstellarum Deep Sky Atlas. Erlangen: Cambridge University Press; Oculum-Verlag GmbH. ISBN 978-1-107-50338-0. OCLC 920437579.
  7. ^ Cite error: The named reference simbad was invoked but never defined (see the help page).
  8. ^ Lee, Jae-Woo (2019), "Multiple Stellar Populations of Globular Clusters from Homogeneous Ca–CN–CH Photometry. V. cn′JWL as a Surrogate cnJWL Index and NGC 6723", The Astrophysical Journal, 883 (2): 166, arXiv:1908.06670, doi:10.3847/1538-4357/ab3d34, S2CID 201070324