NGC 6316

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NGC 6316
NGC 6316 HST WFC3.jpg
NGC 6316 as seen through the Hubble Space Telescope
Observation data (J2000 epoch)
Class III [1]
Constellation Ophiuchus
Right ascension 17h 16m 37.42s [2]
Declination −28° 08′ 24.0″ [2]
Distance 36.86 ± 0.98  kly (11.3 ± 0.3  kpc) [3]
Apparent magnitude (V)9.03 [2]
Apparent dimensions (V)4.9′ × 4.9′ [1]
Physical characteristics
Metallicity [Fe/H] = -0.45 [4] -0.87 [5] -0.90 [3] dex
Estimated age13.1 ± 0.5 Gyr [3]
Notable featuresRelatively metal-rich globular cluster
Other designationsGCl 57, VDBH 219 [2]
See also: Globular cluster, List of globular clusters

NGC 6316 is a globular cluster located in the constellation Ophiuchus. Its Shapley-Sawyer Concentration Class is III, meaning that it has a "strong inner core of stars" and was discovered by the German-born British astronomer William Herschel on 24 May 1784. [6] It is at a distance of about 37,000 light years away from the Earth. [3] NGC 6316 has a metallicity of -0.45, [4] although new studies suggest this cluster to be more metal Poor, with a metallicity of -0.87 [5] and -0.9; [3] this means that its ratio of hydrogen/helium to other elements is only 35% that of the Sun, but still enough to be considered a "metal-rich" globular cluster. [7]

Contents

See also

References

  1. 1 2 Hartmut Frommert. "NGC 6316 - Hartmut Frommert - SEDS". SEDS. Retrieved 6 February 2017.
  2. 1 2 3 4 "NGC 6136". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 6 February 2017.
  3. 1 2 3 4 5 Deras, Dan; Cadelano, Mario; Ferraro, Francesco R.; Lanzoni, Barbara; Pallanca, Cristina (2023). "Digging into the Galactic Bulge: Stellar Population and Structure of the Poorly Studied Cluster NGC 6316". The Astrophysical Journal. 942 (2): 104. arXiv: 2212.03649 . Bibcode:2023ApJ...942..104D. doi: 10.3847/1538-4357/aca9ce . S2CID   254366515.
  4. 1 2 William E. Harris. "Catalog of Parameters for Milky Way Globular Clusters" . Retrieved 3 February 2017.
  5. 1 2 Conroy, Charlie; Villaume, alexa; van Dokkum, Pieter G.; Lind, karin (February 2018). "Metal-rich, Metal-poor: Updated Stellar Population Models for Old Stellar Systems". The Astrophysical Journal. 854 (2): 139. arXiv: 1801.10185 . Bibcode:2018ApJ...854..139C. doi: 10.3847/1538-4357/aaab49 .
  6. ↑ Seligman, Courtney. "NGC 6316 (= GCL 57)". cseligman. Retrieved 4 October 2015.
  7. ↑ Layden, Andrew C.; Bowes, Benjamin T.; Welch, Douglas L.; Webb, Tracy M. A. (2003). "Variable Stars in Metal-Rich Globular Clusters. II. NGC 6316". The Astronomical Journal. 126 (1): 255–264. arXiv: astro-ph/0304077 . Bibcode:2003AJ....126..255L. doi:10.1086/375651. S2CID   8720908.


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