Astronomy:NGC 4485

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Short description: Irregular galaxy in the constellation Canes Venatici
NGC 4485
Starbursts in the wake of a fleeting romance.jpg
NGC 4485 taken by Hubble.[1]
Observation data (J2000 epoch)
ConstellationCanes Venatici[1]
Right ascension 12h 30m 31.113s[2]
Declination+41° 42′ 04.22″[2]
Redshift0.0016[3]
Helio radial velocity483[4]
Distance29.1 Mly (8.91 Mpc)[4]
Apparent magnitude (V)11.93[3]
Apparent magnitude (B)12.32[3]
Characteristics
TypeIB(s)m pec[5]
Other designations
NGC 4485, UGC 7648, MCG+07-26-013, PGC 41326[3]

NGC 4485 is an irregular galaxy located in the northern constellation of Canes Venatici. It was discovered January 14, 1788 by William Herschel.[6] This galaxy is located at a distance of 29[4] million light years and is receding with a heliocentric radial velocity of 483 km/s.[4]

NGC 4485 is interacting with the spiral galaxy NGC 4490 and as a result both galaxies are distorted and are undergoing intense star formation. They have a projected separation of 9.3 kpc and are surrounded by an extended hydrogen envelope with a dense bridge of gas joining the two. Both galaxies are otherwise isolated and of low mass. The star formation rate in NGC 4485 is 0.22 M☉·yr−1.[7]

Gallery

  • NGC 4485 and NGC 4490.

  • Interaction between them created a stream of material about 25 000 light-years long.[8]

References

  1. ↑ 1.0 1.1 "Starbursts in the wake of a fleeting romance". ESA/Hubble Picture of the Week. http://www.spacetelescope.org/images/potw1419a/. 
  2. ↑ 2.0 2.1 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 3.2 3.3 "NGC 4485". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+4485. 
  4. ↑ 4.0 4.1 4.2 4.3 Tully, R. Brent et al. (2016). "Cosmicflows-3". The Astronomical Journal 152 (2): 21. doi:10.3847/0004-6256/152/2/50. 50. Bibcode: 2016AJ....152...50T. 
  5. ↑ "Results for object NGC 4485 (NGC 4485)". NASA/IPAC Extragalactic Database. California Institute of Technology. https://ned.ipac.caltech.edu/byname?objname=NGC%204485&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1. Retrieved 2021-02-10. 
  6. ↑ Seligman, Courtney. "NGC Objects: NGC 4450 - 4499". Celestial Atlas. https://cseligman.com/text/atlas/ngc44a.htm#4485. 
  7. ↑ Pearson, Sarah et al. (November 2018). "Modelling the baryon cycle in low-mass galaxy encounters: the case of NGC 4490 and NGC 4485". Monthly Notices of the Royal Astronomical Society 480 (3): 3069–3090. doi:10.1093/mnras/sty2052. Bibcode: 2018MNRAS.480.3069P. 
  8. ↑ "Hubble Observes Creative Destruction as Galaxies Collide" (in en). https://www.spacetelescope.org/news/heic1910/. 

External links

Coordinates: Sky map 12h 30m 31.113s, +41° 42′ 04.22″




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