ZwCl 1693 BCG

ZwCl 1693 BCG
SDSS image of ZwCl 1693 BCG
Observation data (J2000.0 epoch)
ConstellationHydra
Right ascension08h 25m 57.83s[1]
Declination+04° 14′ 48.40″[1]
Redshift0.225100[1]
Heliocentric radial velocity67,483 ± 14 km/s[1]
Distance3,239.5 ± 226.8 Mly (993.24 ± 69.53 Mpc)[1]
Group or clusterZwCl 1693
magnitude (J)14.26[1]
Characteristics
TypeBrClG[1]
Size~915,000 ly (280.5 kpc) (estimated)[1]
Other designations
2MASX J08255782+0414480, GMBCG J126.49095+04.24674 BCG, OGC 0169, RX J0825.9+0415, SDSS J082557.82+041448.3, WHL J082557.8+041448 BCG, LEDA 3448269

ZwCl 1693 BCG (Short for Zwicky Cluster 1693 Brightest Cluster Galaxy), also known as OGC 169 and RX J0825.9+0415, is a massive elliptical galaxy located in Hydra. The redshift of the galaxy is (z) 0.225[1] and it is the brightest cluster galaxy of the galaxy cluster ZwCl 1693, which is known as ZwCl 0823.2+0425.[2][3]

ZwCl 1693 BCG is an elliptical galaxy with an r-band luminosity of 11.8 magnitude based on an r-band estimation made by the Sloan Digital Sky Survey (SDSS).[4] It is classified as part of the fossil group, where it dominates the center of the group with an estimated half viral radius of 1.249 arcmin. It is also an X-ray source, with the source to the center of the galaxy estimated to have a distance of 21.4 arcseconds.[5] The X-ray emission peak and the galaxy are estimated to be separated by 3.58 kiloparsecs.[6]

The total infrared luminosity of the BCG is found to be less than 13.0 mJy at 100 micrometers while at 500 micrometers, the luminosity is less than 20.4 mJy.[7] The stellar mass of the BCG has been calculated as 0.60 × 1012 M☉ based on a study of stellar masses of 160 BCGs conducted in 2012.[8] Another study published in 2020, calculated its stellar mass as 11.53 ± 0.08 Mʘ, with an estimated stellar velocity dispersion of 319 ± 16 kilometers per seconds.[9] There are no detections of any hydrogen-alpha emission.[2]

References

  1. 1 2 3 4 5 6 7 8 9 "NED Search results for ZwCl 6193 BCG (OGC 169)". NASA/IPAC Extragalactic Database. Retrieved 2026-06-06.
  2. 1 2 Stott, J. P.; Edge, A. C.; Smith, G. P.; Swinbank, A. M.; Ebeling, H. (March 2008). "Near-infrared evolution of brightest cluster galaxies in the most X-ray luminous clusters since z = 1". Monthly Notices of the Royal Astronomical Society. 384 (4): 1502–1510. arXiv:0712.0496. Bibcode:2008MNRAS.384.1502S. doi:10.1111/j.1365-2966.2007.12807.x. ISSN 0035-8711.
  3. ↑ Watanabe, Eri; Takizawa, Motokazu; Nakazawa, Kazuhiro; Okabe, Nobuhiro; Kawaharada, Madoka; Babul, Arif; Finoguenov, Alexis; Smith, Graham P.; Taylor, James E. (2011-04-25). "Suzaku X-ray Follow-up Observation of Weak-lensing-detected Halos in the Field around ZwCl0823.2+0425". Publications of the Astronomical Society of Japan. 63 (2): 357–366. arXiv:1101.1333. doi:10.1093/pasj/63.2.357. ISSN 0004-6264.
  4. ↑ Ogle, Patrick M.; Lanz, Lauranne; Appleton, Philip N.; Helou, George; Mazzarella, Joseph (2019-07-15). "A Catalog of the Most Optically Luminous Galaxies at z < 0.3: Super Spirals, Super Lenticulars, Super Post-mergers, and Giant Ellipticals". The Astrophysical Journal Supplement Series. 243 (1): 14. arXiv:1904.02806. Bibcode:2019ApJS..243...14O. doi:10.3847/1538-4365/ab21c3. ISSN 1538-4365.
  5. ↑ Eigenthaler, P.; Zeilinger, W. W. (December 2009). "The properties of fossil groups of galaxies". Astronomische Nachrichten. 330 (9–10): 978–987. arXiv:0908.1700. Bibcode:2009AN....330..978E. doi:10.1002/asna.200911274.
  6. ↑ Bharadwaj, V.; Reiprich, T. H.; Sanders, J. S.; Schellenberger, G. (2016-01-01). "Investigating the cores of fossil systems with Chandra" (PDF). Astronomy & Astrophysics. 585: A125. arXiv:1509.04275. Bibcode:2016A&A...585A.125B. doi:10.1051/0004-6361/201525824. ISSN 0004-6361.
  7. ↑ 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. (2012-02-10). "THE RELATION BETWEEN COOL CLUSTER CORES ANDHERSCHEL-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.
  8. ↑ Lidman, C.; Suherli, J.; Muzzin, A.; Wilson, G.; Demarco, R.; Brough, S.; Rettura, A.; Cox, J.; DeGroot, A.; Yee, H. K. C.; Gilbank, D.; Hoekstra, H.; Balogh, M.; Ellingson, E.; Hicks, A. (2012-11-01). "Evidence for significant growth in the stellar mass of brightest cluster galaxies over the past 10 billion years". Monthly Notices of the Royal Astronomical Society. 427 (1): 550–568. arXiv:1208.5143. Bibcode:2012MNRAS.427..550L. doi:10.1111/j.1365-2966.2012.21984.x. ISSN 0035-8711.
  9. ↑ Sohn, Jubee; Geller, Margaret J.; Diaferio, Antonaldo; Rines, Kenneth J. (2020-03-10). "Velocity Dispersions of Brightest Cluster Galaxies and Their Host Clusters". The Astrophysical Journal. 891 (2): 129. arXiv:1910.11192. Bibcode:2020ApJ...891..129S. doi:10.3847/1538-4357/ab6e6a. ISSN 0004-637X.
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