Astronomy:NGC 4559

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Short description: Galaxy in the constellation Coma Berenicies
NGC 4559
NGC4559 - SDSS DR14 (panorama).jpg
NGC 4559 imaged by the Sloan Digital Sky Survey
Observation data (J2000 epoch)
ConstellationComa Berenices
Right ascension 12h 35m 57.7s[1]
Declination+27° 57′ 35″[1]
Redshift816 ± 9 km/s[1]
Distance~ 29 Mly (8.859 Mpc)[1]
Apparent magnitude (V)10.4[1]
Characteristics
TypeSAB(rs)cd[1]
Apparent size (V)10.7 × 4.4[1]
Other designations
UGC 7766,[1] PGC 42002,[1] Caldwell 36

NGC 4559 (also known as Caldwell 36) is an intermediate spiral galaxy with a weak inner ring structure in the constellation Coma Berenices. Distance estimates for NGC 4559 range from about 28 million light-years to 31 million light-years, averaging about 29 million light-years.[1]

NGC 4559 is a member of the Coma I Group.[2][3]

Two supernovae have been recorded in NGC 4559, A Type II-L supernova in 1941 (SN 1941A) and an unclassified supernova event in 2019.

The luminous blue variable AT2016blu in NGC 4559 experiences repeated supernova-like outbursts. First observed in January 2012, it burst out again in 2014, 2016, 2017, 2018, 2019, 2020 and 2021.[4]

See also

Gallery

References

  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 "NASA/IPAC Extragalactic Database". Results for NGC 4559. http://ned.ipac.caltech.edu/byname?objname=ngc%204559. 
  2. Sandage, A.; Tammann, G.A. (1975). "Steps toward the Hubble constant. V - The Hubble constant from nearby galaxies and the regularity of the local velocity field" (in en). The Astrophysical Journal 196: 313–328. doi:10.1086/153413. ISSN 0004-637X. Bibcode1975ApJ...196..313S. 
  3. Gregory, S.A.; Thompson, L. A. (1977). "The Coma I Galaxy Cloud" (in en). The Astrophysical Journal 213: 345–350. doi:10.1086/155160. ISSN 0004-637X. Bibcode1977ApJ...213..345G. 
  4. David Bishop (6 July 2021). "LBV 2016blu in NGC 4559". https://www.rochesterastronomy.org/sn2012/lbvn4559.html. 

External links