Astronomy:NGC 5634
From HandWiki
| NGC 5634 | |
|---|---|
| File:250px 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] |
NGC 5634 is a globular cluster in the constellation Virgo, 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
- ↑ 1.0 1.1 Shapley, Harlow; Sawyer, Helen B. (August 1927), "A Classification of Globular Clusters", Harvard College Observatory Bulletin 849 (849): 11–14, Bibcode: 1927BHarO.849...11S.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 "NGC 5634". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+5634.
- ↑ 3.0 3.1 3.2 3.3 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. doi:10.3847/1538-4357/ade0b6. Bibcode: 2025ApJ...988...39W.
- ↑ 4.0 4.1 4.2 "spider.seds.org NGC 5634". http://spider.seds.org/spider/MWGC/n5634.html.
External links
Template:NGC objects:5500-5999
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