NGC 3506

NGC 3506 is a spiral galaxy in the constellation Leo. It is located at a distance of circa 300 million light years from Earth, which, given its apparent dimensions, means that NGC 3506 is about 115,000 light years across. The galaxy has two main spiral arms, with high surface brightness, which can be traced for half a revolution before they fade. One arm splits into four spiral arcs.[2]

NGC 3506
NGC 3506 by Hubble Space Telescope
Observation data (J2000 epoch)
ConstellationLeo
Right ascension11h 03m 13.0s[1]
Declination11° 04′ 36″[1]
Redshift6408 ± 3 km/s[1]
Distance297 Mly (86 Mpc)[1]
Apparent magnitude (V)12.6
Characteristics
TypeSc [1]
Apparent size (V)1.2′ × 1.1′[1]
Other designations
UGC 6120, MCG +02-28-047, PGC 33379[1]

Three supernovae have been observed in NGC 3506: SN 2003L (type Ic, mag. 16.9),[3] SN 2017dfq (type Ia, mag. 15.3),[4] and SN 2021adgz (type II, mag. 19.4).[5] SN 2003L spectrum featured a relatively blue continuum, dominated by strong P-Cyg lines of Ca II (H and K) and Fe II and a relatively weaker Si II 635.5-nm line was also visible.[6]

It is an isolated galaxy.[7]

  • NGC 3506 by the HST
    NGC 3506 by the HST
  • NGC 3506 (SDSS DR14)
    NGC 3506 (SDSS DR14)

References
  1. "NASA/IPAC Extragalactic Database". Results for NGC 3506. Retrieved 2016-01-18.
  2. Sandage, A.; Bedke, J. (1994). The Carnegie Atlas of Galaxies. Volume I. Carnegie Institution of Washington.
  3. Transient Name Server entry for SN 2003L. Retrieved 24 March 2023.
  4. Latest Supernovae rochesterastronomy.org
  5. Transient Name Server entry for SN 2021adgz. Retrieved 25 March 2023.
  6. IAUC 8057: 2003P; 2003L, 2003M,, 2003O International Astronomical Union Circular January 25, 2003
  7. Hern?ndez-Toledo, H. M.; V?zquez-Mata, J. A.; Mart?nez-V?zquez, L. A.; Choi, Yun-Young; Park, Changbom (1 June 2010). "The UNAM-KIAS Catalog of Isolated Galaxies". The Astronomical Journal. 139 (6): 2525–2541. arXiv:1005.1571. Bibcode:2010AJ....139.2525H. doi:10.1088/0004-6256/139/6/2525. S2CID 118568730.


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