Alicante 7
Alicante 7, also known as RSGC5, (Red Supergiant Cluster 5) is an open cluster rich in red supergiants found in the Scutum-Crux Arm of the Milky Way Galaxy, along with RSGC1, Stephenson 2, RSGC3, Alicante 8, and Alicante 10.[2] Alicante 7 contains 7 red supergiants, making it one of the most massive open clusters known.[3]
| Alicante 7 | |
|---|---|
| Observation data (J2000 epoch) | |
| Right ascension | 18h 44m 29.45s[1] |
| Declination | −03° 30′ 02.4″[1] |
| Distance | 19.6 kly (6 kpc[2]) |
| Apparent magnitude (V) | not visible |
| Apparent dimensions (V) | ~7′[2] |
| Physical characteristics | |
| Mass | ~10000[2] M☉ |
| Radius | ~6 pc[lower-alpha 1] |
| Estimated age | 16–20 myr |
| Other designations | RSGC5 |
| Associations | |
| Constellation | Scutum |
Notes
- The radius of Alicante 7 can be calculated using the angular size and the distance
References
- "Cl Alicante 7". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-10-05.
- Negueruela, I.; González-Fernández, C.; Marco, A.; Clark, J. S. (1 April 2011). "A massive association around the obscured open cluster RSGC3". Astronomy & Astrophysics. 528: A59. arXiv:1102.0028. Bibcode:2011A&A...528A..59N. doi:10.1051/0004-6361/201016102. S2CID 53517711.
- Origlia, L.; Dalessandro, E.; Sanna, N.; Mucciarelli, A.; Oliva, E.; Cescutti, G.; Rainer, M.; Bragaglia, A.; Bono, G. (2019). "Stellar population astrophysics (SPA) with the TNG". Astronomy & Astrophysics. 629: A117. arXiv:1908.07779. doi:10.1051/0004-6361/201936283. S2CID 201125229.
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