NGC 740

NGC 740 (Vale Severis)
NGC 740 imaged by the Sloan Digital Sky Survey
Observation data (J2000 epoch)
Constellation	Triangulum
Right ascension	01^h 56^m 54.867^s[1]
Declination	+33° 00′ 54.63″[1]
Heliocentric radial velocity	4,518[2] km/s
Distance	198.9 Mly (60.98 Mpc)[2]
Apparent magnitude (B)	14.9
Characteristics
Type	SBb?[3]
Mass	2.48×10^12[2] M☉
Size	1,100 kly[2]
Apparent size (V)	1.017′ × 0.264′[1]
Other designations
UGC 1421, MCG +05-05-031, PGC 7316[4]

NGC 740 is a barred spiral galaxy located in the Triangulum constellation. It is estimated to be 210 million light-years from the Milky Way and has a diameter of about 85,000 light-years. It was discovered by the Irish engineer Bindon Stoney, an assistant to William Parsons.^[5][6][7]

References

1. Skrutskie, Michael F.; Cutri, Roc M.; Stiening, Rae; Weinberg, Martin D.; Schneider, Stephen E.; Carpenter, John M.; Beichman, Charles A.; Capps, Richard W.; Chester, Thomas; Elias, Jonathan H.; Huchra, John P.; Liebert, James W.; Lonsdale, Carol J.; Monet, David G.; Price, Stephan; Seitzer, Patrick; Jarrett, Thomas H.; Kirkpatrick, J. Davy; Gizis, John E.; Howard, Elizabeth V.; Evans, Tracey E.; Fowler, John W.; Fullmer, Linda; Hurt, Robert L.; Light, Robert M.; Kopan, Eugene L.; Marsh, Kenneth A.; McCallon, Howard L.; Tam, Robert; Van Dyk, Schuyler D.; Wheelock, Sherry L. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal. 131 (2): 1163–1183. Bibcode:2006AJ....131.1163S. doi:10.1086/498708. ISSN 0004-6256. S2CID 18913331.
2. Crook, Aidan C.; et al. (February 2007). "Groups of Galaxies in the Two Micron All Sky Redshift Survey". The Astrophysical Journal. 655 (2): 790–813. arXiv:astro-ph/0610732. Bibcode:2007ApJ...655..790C. doi:10.1086/510201. S2CID 11672751.
3. de Vaucouleurs, G.; et al. (1991). "Third reference catalogue of bright galaxies". 3.9. New York: Springer-Verlag. {{cite journal}}: Cite journal requires |journal= (help)
4. "NGC 740". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-01-13.
5. Rojas, Sebastián García. "Galaxy NGC 740 - Barred Spiral Galaxy in Triangulum Constellation". Telescopius. Retrieved 2019-12-09.
6. "DOCdb - NGC 740". www.docdb.net. Retrieved 2019-12-09.
7. "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2019-12-09.

External links

• Media related to NGC 740 at Wikimedia Commons