Astronomy:UGC 6614

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UGC 6614
The LSB galaxy UGC 6614, imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
ConstellationLeo
Right ascension 11h 39m 14.9s[1]
Declination17° 08′ 37″[1]
Redshift0.021188 ± 0.000007[1]
Helio radial velocity6,359 ± 2 km/s
Distance322 Mly (98.72 Mpc)
Apparent magnitude (V)14.377[1]
Absolute magnitude (B)-22.00 ± 0.50[1]
Characteristics
Type(R)SA(r)a[1]
Size~309,000 ly (94.75 kpc) (estimated)[1]
Apparent size (V)1.7' × 1.4'[1]
Other designations
MCG+03-30-029, PGC 36122[1]

UGC 6614 is a giant spiral galaxy located about 330 million light-years away in the constellation Leo. It has an estimated diameter of nearly 300,000 light-years.[2]

Physical characteristics

UGC 6614 is classified as a low surface brightness (LSB) galaxy.[3][4][5] The galaxy is nearly face-on and has a ring-like feature around its bulge,[6] with distinctive extended spiral arms.[7] The bulge of UGC 6614 is found to be red, similar to those of S0 and other elliptical galaxies, hinting at the existence of an old star population.[8] In its center, globular clusters are present.[9]

It is hypothesised UGC 6614 might be a giant elliptical galaxy, but because of repeated mergers with other disk galaxies, it shows a stellar disk structure, causing its spiral-like appearance.[10]

UGC 6614 possibly shows the highest metallicity known for an LSB galaxy with an estimated log value of (O/H) 1⁄4 3 to 2.84.[11] Its nucleus shows AGN activity at optical wavelengths[12] and appears as a bright core in X-ray emission, according to XMM-Newton archival data.[4]

Black hole

UGC 6614 contains a supermassive black hole in its center, estimated at 3.8 million solar masses.[13]

Unconfirmed Supernova

AT 2020ojw, an astronomical transient, was discovered in UGC 6614 in July 2020 by ATLAS (Asteroid Terrestrial-impact Last Alert System). It had a magnitude of 18.4 and is a candidate supernova.[14][15]

Group Membership

UGC 6614 is a member of a small group of 3 galaxies known as [T2015] nest 100958. [T2015] nest 100958 has a velocity dispersion of 244 km/s and an estimated mass of 1.38 × 1013 M☉. Other members of the group include its brightest member, NGC 3767, and CGCG 097-024.[16] The group is part of the Coma Supercluster.[17][18][19]

See also

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 "NASA/IPAC Extragalactic Database". Results for UGC 6614. http://nedwww.ipac.caltech.edu/. Retrieved 2017-07-22. 
  2. ↑ "Your NED Search Results". https://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=UGC_6614&extend=no&hconst=73&omegam=0.27&omegav=0.73&corr_z=1&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES. 
  3. ↑ "Giant Low Surface Brightness Galaxies - Ronald J. Buta". https://ned.ipac.caltech.edu/level5/Sept11/Buta/Buta14.html. 
  4. ↑ 4.0 4.1 Naik, Sachindra; Das, M.; Jain, C.; Paul, B. (March 2010). "An X-ray bright nucleus in the low-surface-brightness galaxy UGC 6614". Monthly Notices of the Royal Astronomical Society 404 (4): 2056. doi:10.1111/j.1365-2966.2010.16423.x. ISSN 0035-8711. Bibcode: 2010MNRAS.404.2056N. 
  5. ↑ Mishra, Alka; Kantharia, N. G.; Das, M.; Omar, A.; Srivastava, D. C. (2017-01-21). "GMRT HI study of giant low surface brightness galaxies". Monthly Notices of the Royal Astronomical Society 464 (3): 2741–2751. doi:10.1093/mnras/stw2506. ISSN 0035-8711. 
  6. ↑ Hinz, J. L.; Rieke, M. J.; Rieke, G. H.; Willmer, C. N. A.; Misselt, K.; Engelbracht, C. W.; Blaylock, M.; Pickering, T. E. (2007-07-01). "Spitzer Observations of Low-Luminosity Isolated and Low Surface Brightness Galaxies". The Astrophysical Journal 663 (2): 895–907. doi:10.1086/518817. ISSN 0004-637X. Bibcode: 2007ApJ...663..895H. https://ui.adsabs.harvard.edu/abs/2007ApJ...663..895H. 
  7. ↑ Mehta, Kushal T.; O'Neil, K. (2006-12-01). "Mapping a Low Surface Brightness Galaxy". American Astronomical Society Meeting Abstracts 209: 04.11. Bibcode: 2006AAS...209.0411M. https://ui.adsabs.harvard.edu/abs/2006AAS...209.0411M. 
  8. ↑ Quillen, A. C.; Pickering, T. E. (1997-05-01). "Evidence for Old Stars in the Red Low Surface Brightness Galaxies UGC 6614 and F568-6". arXiv:astro-ph/9705115.
  9. ↑ Kim, J. H.; McGaugh, S. S. (2002-12-01). "Hubble Space Telescope Imaging of Globular Clusters in the Face-on Galaxies UGC 5981 & UGC 6614". American Astronomical Society Meeting Abstracts 201: 13.04. Bibcode: 2002AAS...201.1304K. https://ui.adsabs.harvard.edu/abs/2002AAS...201.1304K. 
  10. ↑ Yoachim, Peter; Schmitz, D.; Loebman, S.; Debattista, V. P.; Kwak, S. (2014-01-01). "IFU Observations of Giant Low Surface Brightness Galaxies". American Astronomical Society Meeting Abstracts #223 223: 453.05. Bibcode: 2014AAS...22345305Y. https://ui.adsabs.harvard.edu/abs/2014AAS...22345305Y. 
  11. ↑ McGaugh, S.S. (1994). "Oxygen Abundances In Low Surface Brightness Disk Galaxies". The Astrophysical Journal 426: 135. doi:10.1086/174049. Bibcode: 1994ApJ...426..135M. https://adsabs.harvard.edu/full/1994ApJ...426..135M. Retrieved 2024-08-09. 
  12. ↑ Schombert, J. (1998-10-01). "Active Galactic Nucleus Activity in Giant, Low Surface Brightness Galaxies". The Astronomical Journal 116 (4): 1650–1656. doi:10.1086/300558. ISSN 0004-6256. Bibcode: 1998AJ....116.1650S. https://ui.adsabs.harvard.edu/abs/1998AJ....116.1650S. 
  13. ↑ Ramya, S.; Prabhu, T. P.; Das, M. (2011-12-01). "Active galactic nucleus activity and black hole masses in low surface brightness galaxies". Monthly Notices of the Royal Astronomical Society 418 (2): 789–800. doi:10.1111/j.1365-2966.2011.19530.x. ISSN 0035-8711. Bibcode: 2011MNRAS.418..789R. 
  14. ↑ Srivastav, S.; Smith, K. W.; McBrien, O.; Smartt, S. J.; Gillanders, J.; Clark, P.; Fulton, M.; O'Neill, D. et al. (2020-07-01). "ATLAS20sgz (AT2020ojw): discovery of a candidate supernova in UGC 6614 (93 Mpc)". Transient Name Server AstroNote 135: 1. Bibcode: 2020TNSAN.135....1S. https://ui.adsabs.harvard.edu/abs/2020TNSAN.135....1S. 
  15. ↑ "AT 2020ojw | Transient Name Server". https://www.wis-tns.org/object/2020ojw. 
  16. ↑ Tully, R. Brent (2015-05-01). "Galaxy Groups: A 2MASS Catalog". The Astronomical Journal 149 (5): 171. doi:10.1088/0004-6256/149/5/171. ISSN 0004-6256. Bibcode: 2015AJ....149..171T. https://ui.adsabs.harvard.edu/abs/2015AJ....149..171T. 
  17. ↑ "UGC 6614". https://simbad.cds.unistra.fr/simbad/sim-id?Ident=UGC++6614&NbIdent=query_hlinks&Coord=11+39+14.8736598984+17+08+37.200948684&parents=4&submit=parents&siblings=4293&hlinksdisplay=h_all. 
  18. ↑ Mahajan, Smriti; Singh, Ankit; Shobhana, Devika (2018-08-01). "Ultraviolet and optical view of galaxies in the Coma supercluster". Monthly Notices of the Royal Astronomical Society 478 (4): 4336–4347. doi:10.1093/mnras/sty1370. ISSN 0035-8711. Bibcode: 2018MNRAS.478.4336M. 
  19. ↑ Gregory, S. A.; Thompson, L. A. (1978-06-01). "The Coma/A1367 supercluster and its environs.". The Astrophysical Journal 222: 784–799. doi:10.1086/156198. ISSN 0004-637X. Bibcode: 1978ApJ...222..784G. https://ui.adsabs.harvard.edu/abs/1978ApJ...222..784G/abstract. 



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