NGC 3521

NGC 3521
NGC 3521
	NGC 3521 HST
Observation data (J2000 epoch)
Constellation	Leo
Right ascension	11h 05m 48.593s
Declination	–00° 02′ 09.24″
Redshift	0.002672
Heliocentric radial velocity	801 km/s
Distance	26.2 Mly (8.03 Mpc)
Apparent magnitude (V)	11.0
Characteristics
Type	SAB(rs)bc
Apparent size (V)	11′.0 × 5′.1
Notable features	HII LINER
Other designations
	UGC 6150, Bubble Galaxy, PGC 33550

NGC 3521 is a flocculent^[4] intermediate spiral galaxy located around 26^[4] million light-years away from Earth in the constellation Leo. It has a morphological classification of SAB(rs)bc,^[3] which indicates that it is a spiral galaxy with a trace of a bar structure (SAB), a weak inner ring (rs), and moderate to loosely wound arm structure (bc).^[5] The bar structure is difficult to discern, both because it has a low ellipticity and the galaxy is at a high inclination^[3] of 72.7° to the line of sight.^[4] The relatively bright bulge is nearly 3/4 the size of the bar, which may indicate the former is quite massive.^[3] The nucleus of this galaxy is classified as an HII LINER,^[6] as there is an H II region at the core and the nucleus forms a low-ionization nuclear emission-line region.

References

^ ^a ^b 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.
^ ^a ^b ^c "NASA/IPAC Extragalactic Database". Results for NGC 3521. Retrieved 2006-10-24.
^ ^a ^b ^c ^d ^e Mao, Rui-Qing; et al. (December 2010), "An Extragalactic ¹²CO J = 3-2 Survey with the Heinrich Hertz Telescope", The Astrophysical Journal, 724 (2): 1336–1356, arXiv:1009.4906, Bibcode:2010ApJ...724.1336M, doi:10.1088/0004-637X/724/2/1336, S2CID 118390123.
^ ^a ^b ^c ^d Liu, Guilin; et al. (July 2011), "The Super-linear Slope of the Spatially Resolved Star Formation Law in NGC 3521 and NGC 5194 (M51a)", The Astrophysical Journal, 735 (1): 63, arXiv:1104.4122, Bibcode:2011ApJ...735...63L, doi:10.1088/0004-637X/735/1/63, S2CID 119199965.
^ Buta, Ronald J.; et al. (2007), The de Vaucouleurs Atlas of Galaxies, Cambridge University Press, pp. 13–17, ISBN 978-0521820486.
^ Das, Mousumi; et al. (December 2003), "Central Mass Concentration and Bar Dissolution in Nearby Spiral Galaxies", The Astrophysical Journal, 582 (1): 190–195, arXiv:astro-ph/0208467, Bibcode:2003ApJ...582..190D, doi:10.1086/344480, S2CID 18713107.