Ruprecht 44 is an open cluster in the Milky Way galaxy. It is about 6,600 pc away in the constellation Puppis.[2] Ruprecht 44 is a very young open cluster, only about several million years old.[3]
| Ruprecht 44 | |
|---|---|
 | |
| Observation data (J2000 epoch) | |
| Right ascension | 07h 58m 54.0s[1] |
| Declination | −28° 35′ 00″[1] |
| Distance | 6,600 pc |
| Physical characteristics | |
| Estimated age | ~106 years |
| Other designations | C 0757-284, KPR2004b 176, KPS2012 MWSC 1398 |
| Associations | |
| Constellation | Puppis |
| Star name | LSS number | Effective temperature | Absolute magnitude | Bolometric magnitude | Mass (M☉) | Spectral type | Ref. |
|---|---|---|---|---|---|---|---|
| WR 10 (HD 65865) | LSS 916 | 63000 | -4.2 | -8.5 | 25 | WN4.5 | [4] |
| LSS 891 | 37200 | -4.4 | -8 | 27 | O8III(f) | [4] | |
| LSS 898 | 35100 | -4.3 | -7.7 | 24 | Be | [4] | |
| LSS 902 | 31600 | -4.7 | -7.9 | 23 | B0V | [4] | |
| LSS 920 | 34700 | -3.7 | -7.1 | 21 | O9.5V | [4] | |
| LSS 907 | 31600 | -4.3 | -7.4 | 20 | B0V | [4] |
References
edit- ^ a b "Ruprecht 44". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 29 December 2020.
- ^ Moffat, A. F. J.; Fitzgerald, M. P. (1974). "Distant galactic structure in PUP : the Ruprecht 44 aggregate". Astronomy and Astrophysics. 34: 291–296. Bibcode:1974A&A....34..291M.
- ^ Giorgi, E. E.; Solivella, G. R.; Perren, G.; Vázquez, R. A.; Carraro, G. (2018). "Photometric and spectroscopic study in the region of Ruprecht 44 and the Galaxy structure". Boletín de la Asociación Argentina de Astronomía. 60: 167–169. Bibcode:2018BAAA...60..167G.
- ^ a b c d e f Massey, P.; Degioia-Eastwood, K.; Waterhouse, E. (2001). "The Progenitor Masses of Wolf-Rayet Stars and Luminous Blue Variables Determined from Cluster Turnoffs. II. Results from 12 Galactic Clusters and OB Associations". The Astronomical Journal. 121 (2): 1050–1070. arXiv:astro-ph/0010654. Bibcode:2001AJ....121.1050M. doi:10.1086/318769. S2CID 53345173.
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