Share to:

 

NGC 4372

NGC 4372
Observation data (J2000 epoch)
ClassXII[1]
ConstellationMusca
Right ascension12h 25m 45.43s[2]
Declination−72° 39′ 32.7″[2]
Distance18.9 kly (5.8 kpc)[3]
Apparent magnitude (V)9.85[2]
Apparent dimensions (V)18'
Physical characteristics
Absolute magnitude-8.52
Mass3.29×105[3] M☉
Radius49.5 ly
Metallicity = –2.33±0.08[4] dex
Estimated age12.54 Gyr[5]
Other designationsCaldwell 108
See also: Globular cluster, List of globular clusters

NGC 4372 (also known as Caldwell 108) is a globular cluster in the southern constellation of Musca. It is southwest of γ Muscae (Gamma Muscae) and west of the southern end of the Dark Doodad Nebula (Sandqvist 149), a 3° thin streak of black across a southern section of the great plane of the Milky Way.

NGC 4372 "is partially obscured by dust lanes, but still appears as a large object some 10 arcseconds in diameter," according to Astronomy of the Milky Way (2004).[6]

The cluster has highly peculiar chemistry similar to NGC 5694, being extremely iron-poor yet having super-solar abundances of magnesium and titanium.[4]

References

  1. ^ Shapley, Harlow; Sawyer, Helen B. (August 1927), "A Classification of Globular Clusters", Harvard College Observatory Bulletin, 849 (849): 11–14, Bibcode:1927BHarO.849...11S.
  2. ^ a b c "NGC 4372". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-04-18.
  3. ^ a b Boyles, J.; et al. (November 2011), "Young Radio Pulsars in Galactic Globular Clusters", The Astrophysical Journal, 742 (1): 51, arXiv:1108.4402, Bibcode:2011ApJ...742...51B, doi:10.1088/0004-637X/742/1/51, S2CID 118649860.
  4. ^ a b Kovalev, Mikhail; Bergemann, Maria; Ting, Yuan-Sen; Rix, Hans-Walter (2019), "Non-LTE chemical abundances in Galactic open and globular clusters", Astronomy & Astrophysics, 628: A54, arXiv:1907.02876, Bibcode:2019A&A...628A..54K, doi:10.1051/0004-6361/201935861, S2CID 195820456
  5. ^ Forbes, Duncan A.; Bridges, Terry (May 2010), "Accreted versus in situ Milky Way globular clusters", Monthly Notices of the Royal Astronomical Society, 404 (3): 1203–1214, arXiv:1001.4289, Bibcode:2010MNRAS.404.1203F, doi:10.1111/j.1365-2966.2010.16373.x, S2CID 51825384.
  6. ^ Inglis, Mike (2004). Astronomy of the Milky Way: Observer's Guide to the Southern Sky. Springer. p. 83. ISBN 1852337427.


Kembali kehalaman sebelumnya