Abell 2029 or A2029 is a large and relaxed cluster of galaxies 315 megaparsecs (1.027 billion light-years) away in the constellation Virgo.[5] A2029 is a Bautz–Morgan classification type I cluster due to its large central galaxy, IC 1101. Abell 2029 has a diameter of 5.8–8 million light-years. This type of galaxy is called a cD-type brightest cluster galaxy and may have grown to its large size by accreting nearby galaxies. Despite its relaxed state, it is the central member of a large supercluster which shows clear signs of interaction.

Abell 2029
Abell 2029 composite Chandra.jpg
A2029 in X-ray from Chandra (left) and
in the optical from the Digitized Sky Survey (right).
Observation data (Epoch J2000)
Right ascension15h 10m 56.20s
Declination+05° 44′ 41″
Brightest memberIC 1101
Richness class2[1]
Bautz–Morgan classificationI [1]
Distance326 Mpc (1,063×10^6 ly) h−1
ICM temperature8.47 keV[4]
Binding mass8×1014[2][4] M
X-ray flux6.94×10−11 erg s−1 cm−2 (0.1–2.4 keV)[3]
See also: Galaxy group, Galaxy cluster, List of galaxy groups and clusters


  1. ^ a b Abell, George O.; Corwin, Harold G., Jr.; Olowin, Ronald P. (May 1989). "A catalog of rich clusters of galaxies". Astrophysical Journal Supplement Series. 70 (May 1989): 1–138. Bibcode:1989ApJS...70....1A. doi:10.1086/191333. ISSN 0067-0049.
  2. ^ a b Walker, S. A.; Fabian, A. C.; Sanders, J. S.; George, M. R.; Tawara, Y. (March 2012). "X-ray observations of the galaxy cluster Abell 2029 to the virial radius". Monthly Notices of the Royal Astronomical Society. 422 (4): 3503–3515. arXiv:1203.0486. Bibcode:2012MNRAS.422.3503W. doi:10.1111/j.1365-2966.2012.20860.x. S2CID 118676311.
  3. ^ a b NASA/IPAC EXTRAGALACTIC DATABASE. "NED results for object ABELL 2029". Retrieved March 11, 2012.
  4. ^ a b Table 4 from Vikhlinin, A.; Kravtsov, A.; Forman, W.; Jones, C.; Markevitch, M.; Murray, S. S.; Van Speybroeck, L. (April 2006). "Chandra Sample of Nearby Relaxed Galaxy Clusters: Mass, Gas Fraction, and Mass-Temperature Relation". The Astrophysical Journal. Chicago, Illinois, USA. 640 (2): 691–709. arXiv:astro-ph/0507092. Bibcode:2006ApJ...640..691V. doi:10.1086/500288. S2CID 18940822.
  5. ^ Chandra X-ray Observatory, "Galaxy Clusters and Dark Energy: Chandra Opens New Line of Investigation on Dark Energy", Harvard-Smithsonian Center for Astrophysics

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