NGC 2937

NGC 2937
NGC 2937 (bottom) and NGC 2936 (center)
Observation data (J2000 epoch)
Constellation	Hydra
Right ascension	09h 37m 45s
Declination	+02° 44’ 50”
Distance	∼343 million ly
Apparent magnitude (V)	13.66
Apparent magnitude (B)	14.6
Surface brightness	22.84 mag/arcsec²
Characteristics
Type	E3
Other designations
ARP 142, PGC 27423, UGC 5131, MCG 1-25-6, CGCG 35-15, VV 316, NPM1G +02.0225

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

References

Sources

• Tully, R. Brent (2015-04-28). "GALAXY GROUPS: A 2MASS CATALOG". The Astronomical Journal. 149 (5): 171. doi:10.1088/0004-6256/149/5/171. ISSN 1538-3881.
• 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 (2007). "The GALEX Ultraviolet Atlas of Nearby Galaxies". The Astrophysical Journal Supplement Series. 173 (2): 185–255. doi:10.1086/516636. ISSN 0067-0049.
• Gottlieb S. (May 2017). "Galaxies in Collision". Sky & Telescope: 28–29. ISSN 0037-6604.

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