Wikipedia

NGC 5584

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]

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 ascension14h 22m 3.811s[2]
Declination−00° 23′ 14.82″[2]
Redshift0.005525[3]
Heliocentric 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, 2MASX J14222381-0023148, NGC 5584, UGC 9201, LEDA 51344, MCG +00-37-001, SDSS J142223.76-002315.6[3]

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

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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

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  1. ^ a b "Hubble's View of NGC 5584". Hubble Heritage Project. Retrieved 2011-04-03.
  2. ^ a b c Skrutskie, Michael F.; et al. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal. 131 (2): 1163–1183. Bibcode:2006AJ....131.1163S. doi:10.1086/498708. ISSN 0004-6256. S2CID 18913331.
  3. ^ a b "NGC 5584". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-12-27.
  4. ^ a b 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. arXiv:1607.02787. Bibcode:2016A&A...595A.118V. doi:10.1051/0004-6361/201528048. S2CID 118623916. A118.
  5. ^ Lianou, S.; et al. (November 2019). "Dust properties and star formation of approximately a thousand local galaxies". Astronomy & Astrophysics. 631: 19. arXiv:1906.02712. Bibcode:2019A&A...631A..38L. doi:10.1051/0004-6361/201834553. S2CID 174801441. A38.
  6. ^ a b 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. arXiv:2102.12489. Bibcode:2021ApJ...911...12J. doi:10.3847/1538-4357/abe7e5. S2CID 232045890. 12.
  7. ^ a b c 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. arXiv:1506.03089. Bibcode:2015ApJ...807..133J. doi:10.1088/0004-637X/807/2/133. S2CID 119285714. 133.
  8. ^ a b c d 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. arXiv:1205.1936. Bibcode:2012MNRAS.423.3274D. doi:10.1111/j.1365-2966.2012.21120.x. S2CID 119113527.
  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. arXiv:1906.11677. Bibcode:2019MNRAS.488.2175B. doi:10.1093/mnras/stz1780.
  10. ^ Kronk, Gary W. (2017). Lewis Swift, Celebrated Comet Hunter and the People's Astronomer. Springer International Publishing. p. 107. ISBN 9783319637211.
  11. ^ "The Virgo III Groups". Atlas of the Universe. Retrieved 2010-11-27.
  12. ^ Nemiroff, R.; Bonnell, J., eds. (2011-03-30). "NGC 5584: Expanding the Universe". Astronomy Picture of the Day. NASA. Retrieved 2011-04-03.
  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". Transient Name Server. IAU. Retrieved 8 December 2024.
  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". Transient Name Server. IAU. Retrieved 8 December 2024.
  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. Bibcode:2013AAS...22211804D. 118.04.
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