NGC 3521

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.

NGC 3521
NGC 3521
NGC 3521 HST
Observation data (J2000 epoch)
Right ascension11h 05m 48.593s[1]
Declination–00° 02′ 09.24″[1]
Helio radial velocity801[3] km/s
Distance26.2 Mly (8.03[4] Mpc)
Apparent magnitude (V)11.0[2]
Apparent size (V)11′.0 × 5′.1[2]
Notable featuresHII LINER
Other designations
UGC 6150, Bubble Galaxy



  1. ^ a b Skrutskie, M. F.; et al. (February 2006), "The Two Micron All Sky Survey (2MASS)", The Astronomical Journal, 131 (2): 1163–1183, Bibcode:2006AJ....131.1163S, doi:10.1086/498708.
  2. ^ a b c "NASA/IPAC Extragalactic Database". Results for NGC 3521. Retrieved 2006-10-24.
  3. ^ 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.
  4. ^ 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.
  5. ^ Buta, Ronald J.; et al. (2007), The de Vaucouleurs Atlas of Galaxies, Cambridge University Press, pp. 13–17, ISBN 978-0521820486.
  6. ^ 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.
  7. ^ "Hubble shears a "woolly" galaxy". Retrieved 21 September 2015.

External linksEdit

Coordinates:   11h 5.8m 00s, -0002° 00′ 32000000″