NGC 2937

NGC 2937
NGC 2937 (bottom) and NGC 2936 (center)
Observation data (J2000 epoch)
ConstellationHydra
Right ascension09h 37m 45s
Declination+02° 44′ 50″
Distance~343 million ly
Apparent magnitude (V)13.66
Apparent magnitude (B)14.6
Surface brightness22.84 mag/arcsec2
Characteristics
TypeE3
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 ~ 6,713 km/s, which corresponds to a Hubble distance of 105.1 ± 7.4 Mpc (~343 million ly). 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".

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

See also

References

  1. ↑ "By Name | NASA/IPAC Extragalactic Database". ned.ipac.caltech.edu. Retrieved 2024-07-03.
  2. ↑ "APOD: 2017 February 6 - The Porpoise Galaxy from Hubble". apod.nasa.gov. Retrieved 2024-07-03.
  3. ↑ "New General Catalog Objects: NGC 2900 - 2949". cseligman.com. Retrieved 2024-07-03.
  4. ↑ "New General Catalog Objects: NGC 2900 - 2949". cseligman.com. Retrieved 2024-07-03.
  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. arXiv:0902.4629. Bibcode:2009ApJS..181..572M. doi:10.1088/0067-0049/181/2/572. ISSN 0067-0049.

Sources