Ruprecht 44

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
See also: Open cluster, List of open clusters

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]

Prominent stars

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

1. "Ruprecht 44". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 29 December 2020.
2. 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.
3. 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.
4. 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.