Arp 107 is a pair of interacting galaxies (designated separately as UGC 5984 and MCG+05-26-025) located about 450 million light-years away in the constellation Leo Minor. The galaxies are in the process of colliding and merging.[3]
| Arp 107 | |
|---|---|
 Arp 107 photograph taken using NASA/ESA Hubble Space Telescope’s Advanced Camera for Surveys | |
| Observation data (J2000.0 epoch) | |
| Constellation | Leo Minor |
| Right ascension | 10h 52m 14.94792s[1] |
| Declination | +30° 03′ 28.3630″[1] |
| Redshift | 0.03451[2] |
| Heliocentric radial velocity | 10167 km/s[2] |
| Distance | 450 million ly |
| Apparent magnitude (B) | 14.6[2] |
| Characteristics | |
| Type | SA(s)cP / E1P |
| Size | 348,000 ly (PGC 32620), 70,000 ly (PGC 32628) |
| Apparent size (V) | 1.40' × 0.11' ? |
| Notable features | interacting galaxies |
| Other designations | |
| UGC 5984, VV 233, PGC 32620/32628 | |
Characteristics
editArp 107 is made of two separate galaxies. The larger galaxy to the left is PGC 32620, and the smaller galaxy to the right is PGC 32628, (as depicted in the Hubble image). These galaxies are different in which one is a spiral galaxy while the other one is an elliptical galaxy being connected by a bridge and tidal tail made of dust and gas.[4][5]
The nucleus of PGC 32620 is active and it is classified as a type 2 Seyfert galaxy.[6][7] Additionally, the galaxy is depicted having a ring-like appearance. The most likely scenario for this appearance in PGC 32620, is that the elliptical galaxy penetrated through its disk, causing it to become semi-annular with a large single spiral arm protruding out.[4][7] This spiral arm in turn, then branches out in a form of a tidal arm, where star-forming regions of both old and young star populations are present.[8]
See also
editReferences
edit- ^ a b Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051.
- ^ a b c "Arp 107". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-05-16.
- ^ "Interacting Galaxy Pair Arp 107". Spitzer Space Telescope website. Spitzer Science Center, California Institute of Technology. 9 June 2005. Retrieved 19 October 2012.
- ^ a b Lapham, Ryen C.; Smith, Beverly J.; Struck, Curtis (2013-03-28). "ULTRAVIOLET/OPTICAL/INFRARED COLOR SEQUENCES ALONG THE TIDAL RING/ARM OF Arp 107". The Astronomical Journal. 145 (5): 130. arXiv:1303.3312. doi:10.1088/0004-6256/145/5/130. ISSN 1538-3881.
- ^ Lazaro, Enrico de (2023-09-18). "Hubble Captures Stunning Collision of Two Galaxies | Sci.News". Sci.News: Breaking Science News. Retrieved 2024-08-16.
- ^ Keel, W. C.; Kennicutt, R. C., Jr.; Hummel, E.; van der Hulst, J. M. (1985-05-01). "The effects of interactions on spiral galaxies. I. Nuclear activity and star formation". The Astronomical Journal. 90: 708–730. doi:10.1086/113779. ISSN 0004-6256.
- ^ a b information@eso.org. "A peculiar proceeding". www.esahubble.org. Retrieved 2024-08-16.
- ^ Lapham, Ryen C.; Smith, Beverly J.; Struck, Curtis (2013-03-13). "UV/Optical/IR Color Sequences Along the Tidal Ring/Arm of Arp 107". arXiv.org. Retrieved 2024-08-16.
External links
edit
Media related to Arp 107 at Wikimedia Commons- SIMBAD: VV 233 -- Seyfert 2 Galaxy
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