NGC 5634
| NGC 5634 | |
|---|---|
 The globular cluster NGC 5634 imaged by the Hubble Space Telescope | |
| Observation data (J2000 epoch) | |
| Class | IV [1] |
| Constellation | Virgo |
| Right ascension | 14h 29m 37.28s[2] |
| Declination | −05° 58′ 35.1″[2] |
| Distance | 81.9 ± 3.8 kly (25.12 ± 1.16 kpc)[3] |
| Apparent magnitude (V) | 10.05[2] |
| Physical characteristics | |
| Radius | 2.45' x 2.45'[4] |
| Metallicity | = −1.8 ± 0.1[3] dex |
| Estimated age | 12.8 ± 0.3 Gyr[3] |
| Other designations | GCl 28, GCRV 8456[2] |
![{\displaystyle {\begin{smallmatrix}\left[{\mathrm {Fe} }/{\mathrm {H} }\right]\end{smallmatrix}}}](./_assets_/4c0821bd80891e071c08e7c7ee8e022baedf522c.svg)
NGC 5634 is a globular cluster in the constellation Virgo (constellation), located about 82,000 light years (25.12 kiloparsecs) from Earth.[2] NGC 5634 has an apparent magnitude of about 10[2] and a diameter of 4 or 5 arcminutes.[4] Its Shapley–Sawyer Concentration Class is IV,[1] meaning the cluster shows intermediate rich concentrations. The star near the upper right is the eleventh-magnitude UCAC2 29844847. There is also a bright orange giant, HD 127119, about 1.3 arcminutes away from the cluster.
The origin of NGC 5634 is somewhat unclear; it was once thought to be a likely member of the Sagittarius Dwarf Spheroidal Galaxy,[4] but it may be associated with Gaia-Sausage-Enceladus or the Helmi stream instead.[3]
References
- ^ a b Shapley, Harlow; Sawyer, Helen B. (August 1927), "A Classification of Globular Clusters", Harvard College Observatory Bulletin, 849 (849): 11–14, Bibcode:1927BHarO.849...11S.
- ^ a b c d e f "NGC 5634". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved April 28, 2020.
- ^ a b c d Wang 王, Shouzhi 守智; Nie 聂, Jundan 俊丹; Jiang 姜, Biwei 碧沩; Tian 田, Hao 浩.; Liu 刘, Chao 超.; Zhang 张, Ying-Hua 颖华 (2025). "The Structural and Kinematical Properties of NGC 5634, a Globular Cluster Associated with the Sagittarius Dwarf Galaxy?". The Astrophysical Journal. 988 (1): 39. arXiv:2506.04806. Bibcode:2025ApJ...988...39W. doi:10.3847/1538-4357/ade0b6.
- ^ a b c "spider.seds.org NGC 5634". Retrieved 7 January 2016.
External links
