NGC 5713

NGC 5713
An ultraviolet image of NGC 5713 taken with GALEX.
Observation data (J2000 epoch)
Constellation	Virgo
Right ascension	14h 40m 11.5s[1]
Declination	-00° 17′ 21″[1]
Redshift	1899 ± 7 km/s[1]
Type	SAB(rs)bc pec[1]
Apparent dimensions (V)	2'.8 × 2'.5[1]
Apparent magnitude (V)	12.1[1]
Notable features	single spiral arm[2]
Other designations
UGC 9451,[1] PGC 52412,[1] VIII Zw 447[1]
See also: Galaxy, List of galaxies

NGC 5713 is a peculiar, asymmetric galaxy in the constellation Virgo. Although classified as a spiral galaxy by most galaxy catalogs, NGC 5713 galaxy is very different from most normal spiral galaxies. While most spiral galaxies either have either two well-defined spiral arms or a filamentary spiral-like structure, this spiral galaxy has only one visible spiral arm in its disk.^[2] Gravitational interactions with the nearby spiral galaxy NGC 5719^[3] may be responsible for producing the disturbed, asymmetric structure including the single spiral arm.

NGC 5713 is at the center of a small group of spiral galaxies that also includes NGC 5691 and NGC 5705 along with NGC 5719.^[2]

Star formation

Compared to many other nearby spiral galaxies, NGC 5713 appears to be a site of relatively intense star formation activity.^[4][5] The boost in star formation in NGC 5713 may be linked to the gravitational interactions with NGC 5719. The interactions are expected to disturb the orbits of gas clouds in NGC 5713, thus causing the clouds to collide with each other. The collisions cause the clouds to collapse and form new stars, hence leading to the increased star formation seen in NGC 5713.^[4]

See also

• NGC 4618 - an interacting galaxy with a similar morphology
• NGC 4625 - an interacting galaxy with a similar morphology

References

1. ^ ^{a b c d e f g h i} "NASA/IPAC Extragalactic Database". Results for NGC 5713. http://nedwww.ipac.caltech.edu/. Retrieved 2006-11-15. 
2. ^ ^{a b c} A. Sandage, J. Bedke (1994). Carnegie Atlas of Galaxies. Washington, D.C.: Carnegie Institution of Washington. ISBN 0-87279-667-1. 
3. ^ G. de Vaucouleurs, A. de Vaucouleurs, and H. G. Corwin (1976). Second Reference Catalog of Bright Galaxies. Austin: University of Texas Press. ISBN 0-292-75509-0. 
4. ^ ^{a b} G. Rudnick, H.-W. Rix, R. C. Kennicutt, Jr. (2000). "Lopsided Galaxies, Weak Interactions, and Boosting the Star Formation Rate". Astrophysical Journal 538 (2): 569–580. arXiv:astro-ph/0003109. Bibcode 2000ApJ...538..569R. doi:10.1086/309169. 
5. ^ G. J. Bendo, R. D. Joseph (2004). "Nuclear Stellar Populations in the Infrared Space Observatory Atlas of Bright Spiral Galaxies". Astronomical Journal 127 (6): 3338–3360. arXiv:astro-ph/0403133. Bibcode 2004AJ....127.3338B. doi:10.1086/420712.