NGC 4559

In this article we will delve into the fascinating world of NGC 4559, exploring its many facets and delving into its importance in modern society. From its origins to its impact today, NGC 4559 has played a crucial role in different aspects of daily life, influencing people of all ages, cultures and social strata. Along these lines, we will analyze how NGC 4559 has evolved over time, as well as its significance in various areas, from politics and economics to science and popular culture. Get ready to immerse yourself in an exciting journey through the history and present of NGC 4559, discovering its relevance and impact on the contemporary world.

NGC 4559
NGC 4559 imaged by the Sloan Digital Sky Survey
Observation data (J2000 epoch)
ConstellationComa Berenices
Right ascension12h 35m 57.6285s[1]
Declination+27° 57′ 35.851″[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
Caldwell 36, HOLM 423A, IRAS 12334+2814, UGC 7766, MCG +05-30-030, PGC 42002, CGCG 159-024[1]

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] It was discovered on 11 April 1785 by German-British astronomer William Herschel.[2]

NGC 4559 is a member of the Coma I Group.[3][4]

Supernova

One supernova has been recorded in NGC 4559: SN 1941A (Type II-L, mag. 13.2)[5] was discovered by Rebecca Jones on 24 February 1941, and after checking previous photographs of the galaxy, it was determined that the supernova was visible starting 5 February 1941.[6]

Luminous Blue Variable

NGC 4559 is home to the luminous blue variable AT 2016blu, which experiences repeated supernova-like outbursts. First observed in January 2012, it burst out again in 2014, 2016, 2017, 2018, 2019, 2020, 2021, 2022, and 2024.[7][8]

See also

References

  1. ^ a b c d e f g h i "NASA/IPAC Extragalactic Database". Results for NGC 4559. Retrieved 2020-12-21.
  2. ^ Seligman, Courtney. "NGC 4559". Celestial Atlas. Retrieved 15 August 2024.
  3. ^ 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". The Astrophysical Journal. 196: 313–328. Bibcode:1975ApJ...196..313S. doi:10.1086/153413. ISSN 0004-637X.
  4. ^ Gregory, S.A.; Thompson, L. A. (1977). "The Coma I Galaxy Cloud". The Astrophysical Journal. 213: 345–350. Bibcode:1977ApJ...213..345G. doi:10.1086/155160. ISSN 0004-637X.
  5. ^ "SN 1941A". Transient Name Server. IAU. Retrieved 14 August 2024.
  6. ^ Elis, Stromgren (24 April 1941). "Circular No. 861". Central Bureau for Astronomical Telegrams. Observatory Copenhagen. Retrieved 27 November 2024.
  7. ^ Bishop, David (6 July 2021). "LBV 2016blu in NGC 4559". rochesterastronomy.org. Retrieved 9 August 2021.
  8. ^ Aghakhanloo, Mojgan; Smith, Nathan; Milne, Peter; Andrews, Jennifer E.; Van Dyk, Schuyler D.; Filippenko, Alexei V.; Jencson, Jacob E.; Lau, Ryan M.; Sand, David J.; Wyatt, Samuel; Zheng, WeiKang (2022). "Recurring outbursts of the supernova impostor AT 2016blu in NGC 4559". Monthly Notices of the Royal Astronomical Society. 526 (1): 456. arXiv:2212.09708. Bibcode:2023MNRAS.526..456A. doi:10.1093/mnras/stad2702.