Astronomy:NGC 5584

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NGC 5584
Composite of several exposures taken in visible light between January and April 2010 with Hubble's Wide Field Camera 3[1]
Observation data (J2000 epoch)
ConstellationVirgo
Right ascension 14h 22m 3.811s[2]
Declination−00° 23′ 14.82″[2]
Redshift0.005525[3]
Helio radial velocity1,637 km/s[4]
Distance91.9 Mly (28.2 Mpc)[5]
75.0 Mly (23.01 Mpc)[6]
73.4 Mly (22.5 Mpc)[7]
Apparent magnitude (B)12.80
Characteristics
TypeSAB(rs)cd,[8] SA(s)cd[9]
Apparent size (V)1.320′ × 0.766′[2]
Other designations
IRAS 14198-0009, NGC 5584, UGC 9201, MCG+00-37-001[3]

NGC 5584 is a barred spiral galaxy[8] in the constellation Virgo. It was discovered July 27, 1881 by American astronomer E. E. Barnard.[10] Distance determination using Cepheid variable measurements gives an estimate of 75 million light years,[6] whereas the tip of the red-giant branch approach yields a distance of 73.4 million light years.[7] It is receding with a heliocentric radial velocity of 1,637 km/s.[4] It is a member of the Virgo III Groups, a series of galaxies and galaxy clusters strung out to the east of the Virgo Supercluster of galaxies.[11]

The morphological class of NGC 5584 is SAB(rs)cd,[8] which indicates this spiral galaxy has an inner bar (SAB), an incomplete inner ring structure (rs), and loosely wound spiral arms (cd). It is flocculent in appearance with only a small nucleus. Star formation is occurring along the spiral arms.[8] The galactic plane is inclined at an angle of 42.4° to the line of sight from the Earth,[7] and it spans more than 50,000 light-years across.[12] 250 Cepheid variables have been observed in NGC 5584.[1]

Supernovae

Two supernovae have been observed in NGC 5584:

  • SN 1996aq (Type Ic, mag. 15.7) was discovered by Masakatsu Aoki on 17 August 1996.[13][14] It was offset by 15″ west and 8″ south of the galactic center. It reached magnitude 14.7 on August 18.
  • SN 2007af (type Ia, mag. 15.4) was discovered by Kōichi Itagaki on 24 February 2007, located at an offset 40″ west and 22″ of the galaxy's center.[15][16][17] A light echo of this event was observed about 1,000 days after its discovery.[18]

References

  1. ↑ 1.0 1.1 "Hubble's View of NGC 5584". Hubble Heritage Project. https://hubblesite.org/contents/media/images/2011/08/2824-Image.html?news=true. 
  2. ↑ 2.0 2.1 2.2 Skrutskie, Michael F. et al. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal 131 (2): 1163–1183. doi:10.1086/498708. ISSN 0004-6256. Bibcode: 2006AJ....131.1163S. 
  3. ↑ 3.0 3.1 "NGC 5584". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+5584. 
  4. ↑ 4.0 4.1 van Driel, W. et al. (November 2016). "NIBLES: an H I census of stellar mass selected SDSS galaxies. I. The Nançay H I survey". Astronomy & Astrophysics 595: 43. doi:10.1051/0004-6361/201528048. A118. Bibcode: 2016A&A...595A.118V. 
  5. ↑ Lianou, S. et al. (November 2019). "Dust properties and star formation of approximately a thousand local galaxies". Astronomy & Astrophysics 631: 19. doi:10.1051/0004-6361/201834553. A38. Bibcode: 2019A&A...631A..38L. 
  6. ↑ 6.0 6.1 Javanmardi, Behnam et al. (April 2021). "Inspecting the Cepheid Distance Ladder: the Hubble Space Telescope Distance to the SN Ia Host Galaxy NGC 5584". The Astrophysical Journal 911 (1): 21. doi:10.3847/1538-4357/abe7e5. 12. Bibcode: 2021ApJ...911...12J. 
  7. ↑ 7.0 7.1 7.2 Jang, In; Lee, Myung Gyoon (July 2015). "The Tip of the Red Giant Branch Distances to Type Ia Supernova Host Galaxies. III. NGC 4038/39 and NGC 5584". The Astrophysical Journal 807 (2): 12. doi:10.1088/0004-637X/807/2/133. 133. Bibcode: 2015ApJ...807..133J. 
  8. ↑ 8.0 8.1 8.2 8.3 Das, M. et al. (July 2012). "Star formation in bulgeless late-type galaxies: clues to their evolution". Monthly Notices of the Royal Astronomical Society 423 (4): 3274–3284. doi:10.1111/j.1365-2966.2012.21120.x. Bibcode: 2012MNRAS.423.3274D. 
  9. ↑ Buta, Ronald J. et al. (September 2019). "A comprehensive examination of the optical morphologies of 719 isolated galaxies in the AMIGA sample". Monthly Notices of the Royal Astronomical Society 488 (2): 2175–2189. doi:10.1093/mnras/stz1780. Bibcode: 2019MNRAS.488.2175B. 
  10. ↑ Kronk, Gary W. (2017). Lewis Swift, Celebrated Comet Hunter and the People's Astronomer. Springer International Publishing. p. 107. ISBN 9783319637211. https://books.google.com/books?id=kas2DwAAQBAJ&pg=PA107. 
  11. ↑ "The Virgo III Groups". Atlas of the Universe. http://www.atlasoftheuniverse.com/galgrps/viriii.html. 
  12. ↑ Nemiroff, R.; Bonnell, J., eds (2011-03-30). "NGC 5584: Expanding the Universe". Astronomy Picture of the Day. NASA. https://apod.nasa.gov/apod/ap110330.html. 
  13. ↑ Nakano, S. et al. (August 1996). Green, D. W. E.. ed. "Supernova 1996aq in NGC 5584". IAU Circular 6454 (1): 1. Bibcode: 1996IAUC.6454....1N. 
  14. ↑ "SN 1996aq". IAU. https://www.wis-tns.org/object/1996aq. 
  15. ↑ Nakano, S.; Itagaki, K. (2007). "Supernova 2007af in NGC 5584". Central Bureau Electronic Telegrams 863: 1. Bibcode: 2007CBET..863....1N. 
  16. ↑ Hurst, G. M. (October 2007). "Supernova 2007af in NGC 5584". Journal of the British Astronomical Association 117 (5): 280–281. Bibcode: 2007JBAA..117..280H. 
  17. ↑ "SN 2007af". IAU. https://www.wis-tns.org/object/2007af. 
  18. ↑ Drozdov, Dina; Leising, M. D.; Milne, P.; Riess, A. G. (June 2013). "The Detection of a Light Echo from Type Ia SN 2007af in NGC 5584". American Astronomical Society, AAS Meeting #222 222. 118.04. Bibcode: 2013AAS...22211804D. 



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