Wikipedia

NGC 3506

NGC 3506
NGC 3506 imaged by the 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]

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]

It is an isolated galaxy.[3]

Supernovae

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Three supernovae have been observed in NGC 3506:

  • SN 2003L (Type Ic, mag. 16.9) was discovered by Tom Boles and LOTOSS (Lick Observatory and Tenagra Observatory Supernova Searches) on 12 January 2003.[4][5] Its 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]
  • SN 2017dfq (Type Ia, mag. 16.5) was discovered by ASAS-SN on 20 April 2017.[7]
  • SN 2021adgz (Type II, mag. 19.408) was discovered by Automatic Learning for the Rapid Classification of Events (ALeRCE) on 4 November 2021.[8]
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  • NGC 3506 imaged by the HST
    NGC 3506 imaged by the HST
  • NGC 3506 imaged by SDSS DR14
    NGC 3506 imaged by SDSS DR14

See also

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  • UGC 6093 - A nearby barred spiral galaxy

References

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  1. ^ a b c d e f g "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. ^ Hernández-Toledo, H. M.; Vázquez-Mata, J. A.; Martínez-Vázquez, L. A.; Choi, Yun-Young; Park, Changbom (2010). "The UNAM-KIAS Catalog of Isolated Galaxies". The Astronomical Journal. 139 (6): 2525. arXiv:1005.1571. Bibcode:2010AJ....139.2525H. doi:10.1088/0004-6256/139/6/2525.
  4. ^ Kushida, R.; Nakano, S.; Puckett, T.; Newton, J.; Langoussis, A.; Boles, T.; Schwartz, M.; Swift, B.; Li, W.; Kobayashi, T.; Koshida, Y. (2003). "Supernovae 2003J, 2003K, 2003L, 2003M". International Astronomical Union Circular (8048): 1. Bibcode:2003IAUC.8048....1K.
  5. ^ "SN 2003L". Transient Name Server. IAU. Retrieved 4 August 2025.
  6. ^ Valenti, S.; Cappellaro, E.; Danese, S.; Di Pede, G.; Navasardyan, H.; Pastorello, A.; Benetti, S.; Turatto, M. (2003). "Supernovae 2003L, 2003M, and 2003O". International Astronomical Union Circular (8057): 2. Bibcode:2003IAUC.8057....2V.
  7. ^ "SN 2017dfq". Transient Name Server. IAU. Retrieved 4 August 2025.
  8. ^ "SN 2021adgz". Transient Name Server. IAU. Retrieved 4 August 2025.
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