MS 0302+17

MS 0302+17 is a galaxy supercluster located in the constellation Aries at a distance of 4.485 billion light years (lookback time), equivalent to a comoving distance of 5.338 billion light years. The dimensions are around 6 million parsecs.[1][2]

MS 0302+17 Supercluster
Observation data (Epoch J2000)
Constellation(s)Aries
Right ascension03h 05m 25.8s[1]
Declination+17° 17′ 54″[1]
Redshiftz = 0.42[1]
Distance
(co-moving)		4,485 Gly

Overview

MS 0302+17 contains three massive galaxy clusters. Of these the first, known as CL 0303+1706 was discovered by Alan Вressler and Jim Gunn, using a conventional optical telescope; it is located along the eastern edge of the supercluster and consists of an important concentration of reddish galaxies. Observations made with the Einstein X-ray Observatory revealed the existence of two other clusters: MS 0302+1659 and MS 0302+1717, which are located near the northern edge of the observation field. The MS prefix derives from Medium Sensitivity because X-ray observations are part of the Einstein Medium Sensitivity Survey.[3][1] An interesting fact of the survey is a couple of giant arches located near the luminous central galaxies of MS0302+1659, images of remote galaxies enhanced by the gravitational lensing phenomenon created by the supercluster.[3]

References
  1. Dantel-Fort, M.; Cuillandre, J.-C.; Fort, B.; Mellier, Y.; Gavazzi, R. (20 January 2004). "Mass and Light in the Supercluster of galaxies : MS0302+17". Astronomy & Astrophysics. 422 (2): 407–422. arXiv:astro-ph/0401403. Bibcode:2004A&A...422..407G. doi:10.1051/0004-6361:20047109.
  2. Schneider, Peter; Kochanek, Christopher; Wambsganss, Joachim (2006). Gravitational Lensing: Strong, Weak and Micro: Saas-Fee Advanced Course 33. Springer Science & Business Media. p. 335. ISBN 978-3-540-30310-7.
  3. Fabricant, Daniel G.; Bautz, Marshall W.; McClintock, Jeffrey E. (1 January 1994). "Galaxy evolution in distant, x-ray selected clusters of galaxies, 2: CL 0303+1658 and CL 0303+1717". The Astronomical Journal. 107: 8–23. Bibcode:1994AJ....107....8F. doi:10.1086/116831.


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