NGC 2937 explained

Epoch:	J2000
Constellation Name:	Hydra
Type:	E3
Sbrightness:	22.84 mag/arcsec²
Appmag B:	14.6
Appmag V:	13.66
Names:	ARP 142,PGC 27423,UGC 5131,MCG 1-25-6,CGCG 35-15,VV 316,NPM1G +02.0225
Dist Ly:	∼343 million ly

NGC 2937 is an elliptical galaxy located in the constellation Hydra. Its velocity relative to the cosmic microwave background is 105.1 ± 7.4 km/s, which corresponds to a Hubble distance of 105.1 ± 7.4  Mpc (∼343 million ly).^[1] NGC 2937 was discovered by German astronomer Albert Marth in 1864.

NGC 2937 is in a strong gravitational interaction with its neighbor NGC 2936, a peculiar spiral galaxy . This interaction has given the latter an appearance that is far from that of a spiral galaxy. The shape of NGC 2936 has earned it the nickname of the "porpoise galaxy".^[2]

Together, these two galaxies appear in Halton Arp 's Atlas of Peculiar Galaxies under the code Arp 142.^[3] Halton Arp uses them as an example from an elliptical galaxy.^[4] This pair of galaxies also appears in the Catalog of Collisional Ring Galaxies by Madore, Nelson and Petrillo.^[5]

See also

• List of NGC objects (2001–3000)

External links

• NGC 2937 at NASA/IPAC
• NGC 2937 at SIMBAD
• NGC 2937 at LEDA

Sources

• Tully . R. Brent . GALAXY GROUPS: A 2MASS CATALOG . The Astronomical Journal . 149 . 5 . 2015-04-28 . 1538-3881 . 10.1088/0004-6256/149/5/171 . 171. 1503.03134 .
• Gil de Paz . Armando . Boissier . Samuel . Madore . Barry F. . Seibert . Mark . Joe . Young H. . Boselli . Alessandro . Wyder . Ted K. . Thilker . David . Bianchi . Luciana . Rey . Soo‐Chang . Rich . R. Michael . Barlow . Tom A. . Conrow . Tim . Forster . Karl . Friedman . Peter G. . Martin . D. Christopher . Morrissey . Patrick . Neff . Susan G. . Schiminovich . David . Small . Todd . Donas . Jose . Heckman . Timothy M. . Lee . Young‐Wook . Milliard . Bruno . Szalay . Alex S. . Yi . Sukyoung . The GALEX Ultraviolet Atlas of Nearby Galaxies . The Astrophysical Journal Supplement Series . 173 . 2 . 2007 . 0067-0049 . 10.1086/516636 . 185–255. astro-ph/0606440 .
• Gottlieb S.. Galaxies in Collision. May 2017. Sky & Telescope. 28-29. 0037-6604.

Notes and References

1. Web site: By Name NASA/IPAC Extragalactic Database . 2024-07-03 . ned.ipac.caltech.edu.
2. Web site: APOD: 2017 February 6 - The Porpoise Galaxy from Hubble . 2024-07-03 . apod.nasa.gov.
3. Web site: New General Catalog Objects: NGC 2900 - 2949 . 2024-07-03 . cseligman.com.
4. Web site: New General Catalog Objects: NGC 2900 - 2949 . 2024-07-03 . cseligman.com.
5. 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 . 10.1088/0067-0049/181/2/572 . 0067-0049. 0902.4629 .