NGC 4559

Last updated
NGC 4559
NGC4559 - SDSS DR14 (panorama).jpg
NGC 4559 imaged by the Sloan Digital Sky Survey
Observation data (J2000 epoch)
Constellation Coma Berenices
Right ascension 12h 35m 57.7s [1]
Declination +27° 57′ 35″ [1]
Redshift 816 ± 9 km/s [1]
Distance ~ 29 Mly (8.859 Mpc) [1]
Apparent magnitude  (V)10.4 [1]
Characteristics
Type SAB(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] It was discovered on 11 April 1785 by German-British astronomer William Herschel. [2]

Contents

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]

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. [6] [7]

See also

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<span class="mw-page-title-main">NGC 4359</span> Galaxy in the constellation Coma Berenices

NGC 4359 is a dwarf barred spiral galaxy seen edge-on that is about 56 million light-years away in the constellation Coma Berenices. It was discovered by astronomer William Herschel on March 20, 1787. It is a member of the NGC 4274 Group, which is part of the Coma I Group or Cloud.

References

  1. 1 2 3 4 5 6 7 8 9 10 "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. ↑ Bishop, David (6 July 2021). "LBV 2016blu in NGC 4559". rochesterastronomy.org. Retrieved 9 August 2021.
  7. ↑ 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 .


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