Astronomy:Arp 256
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Short description: Interacting galaxies in the constellation Cetus
| Arp 256 | |
|---|---|
 Image taken by Hubble Space Telescope. | |
| Observation data (J2000 epoch) | |
| Constellation | Cetus |
| Right ascension | Template:Ra[1] |
| Declination | −10° 22′ 36.49″[1] |
| Redshift | 0.027[1] |
| Helio radial velocity | 7985 km/s[1] |
| Distance | 380 Mly (115 Mpc)[2] |
| Apparent magnitude (V) | S: 14.33[1] N: 13.60[1] |
| Apparent magnitude (B) | S: 14.81[1] N: 13[1] |
| Characteristics | |
| Type | S: SB(s)b pec?[2] N: SB(s)c pec[2] |
| Apparent size (V) | S: 1.1′ × 0.6′[3] N: 1.1′ × 0.8′[4] |
| Notable features | Interacting galaxies |
| Other designations | |
| Arp 256S: MCG-02-01-051, PGC 1224[1] Arp 256N: MCG-02-01-052, PGC 1221[4] | |
Arp 256 is a pair of interacting barred spiral galaxies located 380 million light years away from Earth in the constellation of Cetus. Arp 256 (also Arp 256S) refers to the southern galaxy;[1] the northern galaxy is Arp 256N.[4]
Both galaxies are undergoing intense star formation as seen from the many blue dots in them. Arp 256N has two long ribbon shaped spiral arms full of gas, dust and stars.[5]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 "Arp 256". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Arp+256.
- ↑ 2.0 2.1 2.2 Gil de Paz, Armando et al. (December 2007). "The GALEX Ultraviolet Atlas of Nearby Galaxies". The Astrophysical Journal Supplement Series 173 (2): 185–255. doi:10.1086/516636. Bibcode: 2007ApJS..173..185G.
- ↑ "NED results for object ARP 256S". NASA/IPAC Extragalactic Database. National Aeronautics and Space Administration / Infrared Processing and Analysis Center. http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=Arp+256S&extend=no&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES.
- ↑ 4.0 4.1 4.2 "NED results for object ARP 256N". NASA/IPAC Extragalactic Database. National Aeronautics and Space Administration / Infrared Processing and Analysis Center. http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=Arp+256N&extend=no&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES.
- ↑ information@eso.org. "Arp 256" (in en). https://www.spacetelescope.org/images/heic0810ag/.
External links
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