UGC 6614
Giant spiral galaxy
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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]
| UGC 6614 | |
|---|---|
The LSB galaxy UGC 6614, imaged by the Hubble Space Telescope | |
| Observation data (J2000 epoch) | |
| Constellation | Leo |
| Right ascension | 11h 39m 14.9s[1] |
| Declination | 17° 08′ 37″[1] |
| Redshift | 0.021188 ± 0.000007[1] |
| Heliocentric radial velocity | 6,359 ± 2 km/s |
| Distance | 322 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 | |
| 2MASX J11391484+1708368, MCG +03-30-029, PGC 36122, CGCG 097-40[1] | |
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]