Arp 146

Arp 146
Observation data (J2000.0 epoch)
Constellation	Cetus
Right ascension	00^h 06^m 44.4^s
Declination	−06° 38′ 09.0″
Redshift	0.075440
Heliocentric radial velocity	22,616 km/s
Distance	1.05 Gly
Characteristics
Type	RING
Other designations
PGC 509 and PGC 510, Arp 146, VV 790

Arp 146 (known as PGC 509 and PGC 510) are a pair of interacting galaxies located 1.05 billion light-years away from Earth in the Cetus constellation.^[1][2][3] It was discovered by Dewhirst and catalogued by Boris Vorontsov-Velyaminov as VV 790.^[4] Under the Atlas of Peculiar Galaxies created by Halton Arp, they are categorized under galaxies that have associated rings.^[5]

Arp 146 is classfied as an example of an empty ring galaxy.^[6][7] According to a study, one galaxy appears to have passed through another, leaving behind a ring formed from the bridge material and remnants of the nucleus.^[8] The ring is said to be 18"x11" elliptical measuring 20 kpc in diameter but separated from its companion.^[4]

References

1. "Your NED Search Results for ARP 146 NED01". ned.ipac.caltech.edu. Retrieved 2024-04-18.
2. "NED Search Results for ARP 146 NED02". ned.ipac.caltech.edu. Retrieved 2024-04-18.
3. Ford, Dominic. "Arp 146 (Galaxy cluster)". In-The-Sky.org. Retrieved 2024-04-18.
4. Spight, L.D; Schultz, A.B.; Colegrove, P.T.; DiSanti, M.A.; Frink, U. "CCD Photometry of the Ring Galaxy ARP 146". articles.adsabs.harvard.edu. Retrieved 2024-09-09.
5. "Halton Arp's Atlas of Peculiar Galaxies". cseligman.com. Retrieved 2024-04-18.
6. Higdon, James L. (March 1988). "Neutral hydrogen observations of ARP 144". The Astrophysical Journal. 326: 146. doi:10.1086/166075. ISSN 0004-637X.
7. Madore, Barry F.; Nelson, Erica; Petrillo, Kristen (2009-03-25). "ATLAS AND CATALOG OF COLLISIONAL RING GALAXIES". The Astrophysical Journal Supplement Series. 181 (2): 572–604. arXiv:0902.4629. doi:10.1088/0067-0049/181/2/572. ISSN 0067-0049.
8. Schultz, A. B.; Spight, L. D.; Colegrove, P. T.; Disanti, M. A.; Fink, U. (1990-01-01). "Color maps of Arp 146". Evolution of the Universe of Galaxies. 10: 182–184. Bibcode:1990ASPC...10..182S.