Berkeley 86 is a young open cluster in Cygnus.[2] It is located inside the OB Stellar association Cyg OB 1, and obscured by a foreground dust cloud.[3]
Prominent stars[4]
Star name
Effective temperature
Absolute magnitude
Bolometric magnitude
Mass (M☉)
Spectral type
WR 139 (V444 Cyg)
60000
-4.04
-8.3
9.3
WN5
HD 193576 B (Companion to WR 139)
42700
-5.5
-9.6
53
O6III
HD 228841
41000
-5.4
-9.3
45
O7V
HD 193595
38500
-4.9
-8.6
34
O8V
HD 228969
34700
-5
-8.4
30
O9.5V
HD 228943
31600
-5.3
-8.4
28
B0V
^ ab"Berkeley 86". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 31 December 2020.
^Forbes, D. (1981). "The young open clusters Berkeley 62 and Berkeley 86". Publications of the Astronomical Society of the Pacific. 93: 441–446. Bibcode:1981PASP...93..441F. doi:10.1086/130853.
^Vallenari, A.; Richichi, A.; Carraro, G.; Girardi, L. (1999). "Near-infrared photometry of the young open clusters NGC 1893 and Berkeley 86". Astronomy and Astrophysics. 349: 825–833. arXiv:astro-ph/9909065. Bibcode:1999A&A...349..825V.
^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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