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 HST | |
| Observation data (J2000 epoch) | |
| Constellation | Leo |
| Right ascension | 11h 05m 48.593s[1] |
| Declination | –00° 02′ 09.24″[1] |
| Redshift | 0.002672[2] |
| Helio radial velocity | 801[3] km/s |
| Distance | 26.2 Mly (8.03[4] Mpc) |
| Apparent magnitude (V) | 11.0[2] |
| Characteristics | |
| Type | SAB(rs)bc[3] |
| Apparent size (V) | 11′.0 × 5′.1[2] |
| Notable features | HII LINER |
| Other designations | |
| UGC 6150, Bubble Galaxy, PGC 33550 | |
New General Catalogue 3500 to 3999 | |
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