MS 0839.8+2938 BCG

MS 0839.8+2938 BCG
SDSS image of MS 0839.8+2938 BCG
Observation data (J2000.0 epoch)
ConstellationCancer
Right ascension08h 42m 55.97s[1]
Declination+29° 27′ 27.03″[1]
Redshift0.193663[1]
Heliocentric radial velocity58,059 ± 13 km/s[1]
Distance2,790.5 ± 195.3 Mly (855.57 ± 59.89 Mpc)[1]
Group or clusterMS 0839.8+2938
magnitude (J)14.47[1]
Characteristics
TypeBrCIG[1]
Size~449,000 ly (137.6 kpc) (estimated)[1]
Other designations
2MASX J08425596+2927272, OGC 0376, NVSS J084255+292727, LEDA 139129, RX J0842.9+2927, MS 0839.8+2938:[HDH2012] BCG, GALEX J084256.0+292728[1]

MS 0839.8+2938 BCG (short for MS 0839.8+2938 Brightest Cluster Galaxy), is a Type-cD galaxy[2] located in the constellation of Cancer. The redshift of the galaxy is (z) 0.193[1] and it was first discovered by astronomers in September 1989. It is the dominant and also the brightest cluster galaxy (BCG) of the galaxy cluster MS 0839.8+2938, known as 1E 0839.9+2938.[3]

Description

MS 0839.8+2938 BCG is categorized as a giant elliptical galaxy with an E2 Hubble classification. The color of the galaxy is blue, with the optical spectrum mainly displaying signatures of strong emission lines. There is a faint secondary nucleus located in the northeast with a position angle of 75°.[3] The far-infrared star formation rate is estimated to be 4.1 ± 0.5 M☉, with a continuous star formation rate of around 1.05 M☉ and a total stellar mass of around 40.7 × 106 M☉.[4][5] The appearance of the BCG has been described as having disky isophotes.[6] The K-band magnitude is estimated to be 13.42.[7]

The nucleus of the BCG is active and contains a strong radio source, making it a radio galaxy.[2] The source has a radio luminosity of 1.1 × 1024 W Hz−1[3] and has a compact appearance, mainly dominated by a radio core with radio lobes extending for 80 kiloparsecs.[8][9] The measured radio flux density is estimated to be 26 ± 1 and 25 ± 1 mJy based on C and B configuration array imaging made by the Very Large Array (VLA).[8] Radio imaging made with the Low Frequency Array (LOFAR) shows a central radio component with small lobes. There is no clear evidence of any X-ray cavities associated with the lobes.[10] A study also found the BCG displays extended hydrogen alpha emission and also doubly ionized oxygen emission mainly centering on it, indicating signs of cooling flows.[11][12]

References

  1. 1 2 3 4 5 6 7 8 9 10 "NED Search results for MS 0839.8+2938". NASA/IPAC Extragalactic Database. Retrieved 2026-05-08.
  2. 1 2 Hutchings, J. B.; Edwards, L. (March 2000). "Galaxy Population Properties in the Rich Clusters MS 0839.8+2938, MS 1224.7+2007, and MS 1231.3+1542". The Astronomical Journal. 119 (3): 1100–1110. arXiv:astro-ph/9912148. Bibcode:2000AJ....119.1100H. doi:10.1086/301255. ISSN 0004-6256.
  3. 1 2 3 Nesci, Roberto; Gioia, Isabella M.; Maccacaro, Tommaso; Morris, Simon L.; Perola, Giuseppe C.; Schild, Rudolph E.; Wolter, Anna (September 1989). "A Cooling Flow in a High-Redshift, X-Ray--selected Cluster of Galaxies". The Astrophysical Journal. 344: 104. Bibcode:1989ApJ...344..104N. doi:10.1086/167780. ISSN 0004-637X.
  4. ↑ Rawle, T. D.; Edge, A. C.; Egami, E.; Rex, M.; Smith, G. P.; Altieri, B.; Fiedler, A.; Haines, C. P.; Pereira, M. J.; Pérez-González, P. G.; Portouw, J.; Valtchanov, I.; Walth, G.; van der Werf, P. P.; Zemcov, M. (March 2012). "The Relation between Cool Cluster Cores and Herschel-detected Star Formation in Brightest Cluster Galaxies". The Astrophysical Journal. 747 (1): 29. arXiv:1201.1294. Bibcode:2012ApJ...747...29R. doi:10.1088/0004-637X/747/1/29. ISSN 0004-637X.
  5. ↑ Hicks, A. K.; Mushotzky, R.; Donahue, M. (August 2010). "Detecting Star Formation in Brightest Cluster Galaxies with GALEX". The Astrophysical Journal. 719 (2): 1844–1858. arXiv:1006.3074. Bibcode:2010ApJ...719.1844H. doi:10.1088/0004-637X/719/2/1844. ISSN 0004-637X.
  6. ↑ Smith, Graham P.; Khosroshahi, Habib G.; Dariush, A.; Sanderson, A. J. R.; Ponman, T. J.; Stott, J. P.; Haines, C. P.; Egami, E.; Stark, D. P. (November 2010). "LoCuSS: connecting the dominance and shape of brightest cluster galaxies with the assembly history of massive clusters". Monthly Notices of the Royal Astronomical Society. 409 (1): 169–183. arXiv:1007.2196. Bibcode:2010MNRAS.409..169S. doi:10.1111/j.1365-2966.2010.17311.x. ISSN 0035-8711.
  7. ↑ Collins, C. A.; Mann, R. G. (June 1998). "The K-band Hubble diagram for brightest cluster galaxies in X-ray clusters". Monthly Notices of the Royal Astronomical Society. 297 (1): 128–142. arXiv:astro-ph/9712104. Bibcode:1998MNRAS.297..128C. doi:10.1046/j.1365-8711.1998.01482.x. ISSN 0035-8711.
  8. 1 2 Giacintucci, Simona; Markevitch, Maxim; Cassano, Rossella; Venturi, Tiziana; Clarke, Tracy E.; Brunetti, Gianfranco (2017-05-25). "Occurrence of Radio Minihalos in a Mass-limited Sample of Galaxy Clusters". The Astrophysical Journal. 841 (2): 71. arXiv:1701.01364. Bibcode:2017ApJ...841...71G. doi:10.3847/1538-4357/aa7069. ISSN 0004-637X.
  9. ↑ Biava, N.; Bonafede, A.; Gastaldello, F.; Botteon, A.; Brienza, M.; Shimwell, T. W.; Brunetti, G.; Bruno, L.; Rajpurohit, K.; Riseley, C. J.; Weeren, R. J. van; Rossetti, M.; Cassano, R.; Gasperin, F. De; Drabent, A. (2024-06-01). "First evidence of a connection between cluster-scale diffuse radio emission in cool-core galaxy clusters and sloshing features". Astronomy & Astrophysics. 686: A82. arXiv:2403.09802. Bibcode:2024A&A...686A..82B. doi:10.1051/0004-6361/202348045. ISSN 0004-6361.
  10. ↑ Bîrzan, L.; Rafferty, D. A.; Brüggen, M.; Botteon, A.; Brunetti, G.; Cuciti, V.; Edge, A. C.; Morganti, R.; Röttgering, H. J. A. (2020-06-17). "LOFAR Observations of X-ray Cavity Systems". Monthly Notices of the Royal Astronomical Society. 496 (3): 2613. arXiv:2006.09708v2. Bibcode:2020MNRAS.496.2613B. doi:10.1093/mnras/staa1594.
  11. ↑ Nesci, R.; Perola, G. C.; Wolter, A. (1994-07-01), A ROSAT Hri Obsrevation of the Cooling Flow Cluster MS0839.9+2938, arXiv:astro-ph/9407002, Bibcode:1994astro.ph..7002N, arXiv:astro-ph/9407002
  12. ↑ Gioia, I. M.; Luppino, G. A. (October 1994). "The EMSS Catalog of X-Ray--selected Clusters of Galaxies. I. an Atlas of CCD Images of 41 Distant Clusters". The Astrophysical Journal Supplement Series. 94: 583. arXiv:astro-ph/9405069. Bibcode:1994ApJS...94..583G. doi:10.1086/192083. ISSN 0067-0049.
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