Giant spiral galaxy
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 [ edit ] 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]
UGC 6614 contains a supermassive black hole in its center with an estimated solar mass of 3.8 x 106 .[ 13]
Unconfirmed Supernova [ edit ] 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]
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 incude its brightest member, NGC 3767, and CGCG 097-024.[ 16] The group is part of the Coma Supercluster .[ 17] [ 18] [ 19]
^ a b c d e f g h i "NASA/IPAC Extragalactic Database" . Results for UGC 6614 . Retrieved 2017-07-22 .
^ "Your NED Search Results" . ned.ipac.caltech.edu . Retrieved 2024-08-10 .
^ "Giant Low Surface Brightness Galaxies - Ronald J. Buta" . ned.ipac.caltech.edu . Retrieved 2024-08-09 .
^ a b 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. arXiv :1001.5096 . Bibcode :2010MNRAS.404.2056N . doi :10.1111/j.1365-2966.2010.16423.x . ISSN 0035-8711 .
^ 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. arXiv :1609.07544 . doi :10.1093/mnras/stw2506 . ISSN 0035-8711 .
^ 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. arXiv :0704.2059 . Bibcode :2007ApJ...663..895H . doi :10.1086/518817 . ISSN 0004-637X .
^ 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 .
^ 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 e-prints : astro–ph/9705115. arXiv :astro-ph/9705115 . Bibcode :1997astro.ph..5115Q .
^ 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 .
^ 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 .
^ McGaugh, S.S. (1994). "Oxygen Abundances In Low Surface Brightness Disk Galaxies" . The Astrophysical Journal . 426 : 135. arXiv :astro-ph/9311064 . Bibcode :1994ApJ...426..135M . doi :10.1086/174049 . Retrieved 2024-08-09 .
^ Schombert, J. (1998-10-01). "Active Galactic Nucleus Activity in Giant, Low Surface Brightness Galaxies" . The Astronomical Journal . 116 (4): 1650–1656. Bibcode :1998AJ....116.1650S . doi :10.1086/300558 . ISSN 0004-6256 .
^ 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. arXiv :1108.0763 . Bibcode :2011MNRAS.418..789R . doi :10.1111/j.1365-2966.2011.19530.x . ISSN 0035-8711 .
^ Srivastav, S.; Smith, K. W.; McBrien, O.; Smartt, S. J.; Gillanders, J.; Clark, P.; Fulton, M.; O'Neill, D.; Young, D. R.; McCollum, M.; Townsend, A.; Chen, T. W.; Anderson, J.; Denneau, L.; Flewelling, H. (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 .
^ "AT 2020ojw | Transient Name Server" . www.wis-tns.org . Retrieved 2024-08-09 .
^ Tully, R. Brent (2015-05-01). "Galaxy Groups: A 2MASS Catalog" . The Astronomical Journal . 149 (5): 171. arXiv :1503.03134 . Bibcode :2015AJ....149..171T . doi :10.1088/0004-6256/149/5/171 . ISSN 0004-6256 .
^ "UGC 6614" . simbad.cds.unistra.fr . Retrieved 2024-08-30 .
^ 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. arXiv :1805.09029 . Bibcode :2018MNRAS.478.4336M . doi :10.1093/mnras/sty1370 . ISSN 0035-8711 .
^ Gregory, S. A.; Thompson, L. A. (1978-06-01). "The Coma/A1367 supercluster and its environs" . The Astrophysical Journal . 222 : 784–799. Bibcode :1978ApJ...222..784G . doi :10.1086/156198 . ISSN 0004-637X .