| NGC 2937 | |
|---|---|
.jpg) | |
| 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]
- ^ "By Name | NASA/IPAC Extragalactic Database". ned.ipac.caltech.edu. Retrieved 2024-07-03.
- ^ "APOD: 2017 February 6 - The Porpoise Galaxy from Hubble". apod.nasa.gov. Retrieved 2024-07-03.
- ^ "New General Catalog Objects: NGC 2900 - 2949". cseligman.com. Retrieved 2024-07-03.
- ^ "New General Catalog Objects: NGC 2900 - 2949". cseligman.com. Retrieved 2024-07-03.
- ^ 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.