Astronomy:NGC 6316

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Short description: Globular cluster in the constellation of Ophiuchus
NGC 6316
NGC 6316 HST WFC3.jpg
NGC 6316 as seen through the Hubble Space Telescope
Observation data (J2000 epoch)
ClassIII[1]
ConstellationOphiuchus
Right ascension 17h 16m 37.42s[2]
Declination−28° 08′ 24.0″[2]
Distance36.86 ± 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[math]\displaystyle{ \begin{smallmatrix}\left[\ce{Fe}/\ce{H}\right]\end{smallmatrix} }[/math] = -0.45[4] 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.[5] 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] 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.[6]

See also

References

  1. 1.0 1.1 Hartmut Frommert. "NGC 6316 - Hartmut Frommert - SEDS". SEDS. http://spider.seds.org/spider/MWGC/n6316.html. 
  2. 2.0 2.1 2.2 2.3 "NGC 6136". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+6136. 
  3. 3.0 3.1 3.2 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. doi:10.3847/1538-4357/aca9ce. Bibcode2023ApJ...942..104D. 
  4. 4.0 4.1 "Catalog of Parameters for Milky Way Globular Clusters". http://physwww.mcmaster.ca/~harris/mwgc.dat. 
  5. Seligman, Courtney. "NGC 6316 (= GCL 57)". http://cseligman.com/text/atlas/ngc63.htm#6316. 
  6. 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. doi:10.1086/375651. Bibcode2003AJ....126..255L. 

External links