Markarian 50 is a young
open cluster in the
Milky Way galaxy. Located at about 3,460
pc away in the constellation
Cassiopeia , its age is estimated at only about 7.5 million years old. Markarian 50 may be a member of the
OB association Cassiopeia OB2 . The
Wolf-Rayet star WR 157 is a member of Markarian 50
.
Prominent stars
Star name
Effective temperature
Absolute magnitude
Bolometric magnitude
Mass (M ☉
Spectral type
HD 219460 A
30200
-4.7
-7.7
21
B0III
WR 157 (Companion to HD 219460 A)
65000
20
WN4.5
Mrk50-31
28200
-4.6
-7.4
19
B0.5I
Mrk50-23
23600
-4.5
-6.7
14
B1III
Mrk50-30A
22400
-3.6
-5.7
11
B1.5V
Mrk50-1
22400
-2.8
-4.8
9
B1.5V
References
^ "Cl Mrk 50" . SIMBAD Centre de données astronomiques de Strasbourg . Retrieved 29 December 2020 .^ Baume, Gustavo; Vázquez, Rubén A.; Carraro, Giovanni (December 2004). "The young open cluster Markarian 50" . Monthly Notices of the Royal Astronomical Society . 355 (2): 475–484. Bibcode :2004MNRAS.355..475B . doi :10.1111/j.1365-2966.2004.08337.x hdl :11336/38930 ISSN 0035-8711 . S2CID 122774454 . ^ Turner, D. G.; Moffat, A. F. J.; Lamontagne, R.; Maitzen, H. M. (August 1983). "The WN4.5 component of HD 219460 in the open cluster Markarian 50" . The Astronomical Journal . 88 : 1199–1209. Bibcode :1983AJ.....88.1199T . doi :10.1086/113410 ISSN 0004-6256 . S2CID 120580751 . ^ 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 .
