Markarian 50

Markarian 50
Observation data (J2000 epoch)
Right ascension23h 15m 13.4s
Declination+60° 26′ 53″
Distance3,460 pc
Absolute magnitude (V)8.5
Physical characteristics
Estimated age7.5 million years
Other designationsCl Basel 3, Cl Mrk 50, OCISM 56, MWSC 3712, C 2313+602, Cl Biurakan 3, OCl 257
Associations
ConstellationCepheus
See also: Open cluster, List of open clusters

Markarian 50 is a young open cluster in the Milky Way galaxy. Located at about 3,460 pc away in the constellation Cepheus, 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.

Markarian 50 can also refer to a Seyfert galaxy in the constellation Virgo.

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

  1. 1 2 "Cl Mrk 50". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 23 April 2025.
  2. 1 2 3 "Finding the constellation which contains given sky coordinates". djm.cc. 2 August 2008.
  3. ↑ 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.
  4. ↑ 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.
  5. ↑ "Mrk 50". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 23 April 2025.
  6. ↑ 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.