Astronomy:NGC 4185

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NGC 4185
File:NGC 4185 imaged by Legacy Surveys.jpg
NGC 4185 imaged by Legacy Surveys
Observation data (J2000 epoch)
ConstellationComa Berenices
Right ascension 12h 13m 22.2035s[1]
Declination+28° 30′ 39.600″[1]
Redshift0.012968±0.0000124[1]
Helio radial velocity3,888±4 km/s[1]
Distance214.61 ± 0.33 Mly (65.800 ± 0.100 Mpc)[1]
Group or clusterNGC 4185 group (LGG 276)
Apparent magnitude (V)12.90[1]
Characteristics
TypeSbc[1]
Size~181,000 ly (55.51 kpc) (estimated)[1]
Apparent size (V)2.6′ × 1.9′[1]
Other designations
IRAS F12107+2847, UGC 7225, MCG+05-29-038, PGC 38995[1]

NGC 4185 is a large spiral galaxy in the constellation of Coma Berenices. Its velocity with respect to the cosmic microwave background is 4,178±21 km/s, which corresponds to a Hubble distance of 201.0 ± 14.1 Mly (61.63 ± 4.33 Mpc).[1] Additionally, three non-redshift measurements give a farther mean distance of 214.61 ± 0.33 Mly (65.800 ± 0.100 Mpc).[2] It was discovered by German-British astronomer William Herschel on 11 April 1785.[3][4]

NGC 4195 is a LINER galaxy, i.e. a galaxy whose nucleus has an emission spectrum characterized by broad lines of weakly ionized atoms.[5][6]

NGC 4185 group

NGC 4185 is a member of a galaxy group that bears its name. The NGC 4185 group (also known as LGG 276) has 13 galaxies, including NGC 4131, NGC 4132, NGC 4134, NGC 4169, NGC 4174, NGC 4175, NGC 4196, NGC 4253, MCG +05-29-024, MCG +05-29-035, UGC 7221, and UGC 7294.[7][8]

Supernova

One supernova has been observed in NGC 4185:

  • SN 1982C (type unknown, mag. 17.5) was discovered by Hungarian astronomer Miklós Lovas on 22 March 1982.[9][10]

See also

References

  1. ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 "Results for object NGC 4185". NASA and Caltech. https://ned.ipac.caltech.edu/byname?objname=NGC+4185. 
  2. ↑ "Distance Results for NGC 4185". NASA. https://ned.ipac.caltech.edu/cgi-bin/nDistance?name=NGC+4185. 
  3. ↑ Herschel, William (1786). "Catalogue of One Thousand New Nebulae and Clusters of Stars". Philosophical Transactions of the Royal Society of London 76: 457–499. doi:10.1098/rstl.1786.0027. Bibcode: 1786RSPT...76..457H. https://zenodo.org/record/1432282/files/article.pdf. 
  4. ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 4185". https://cseligman.com/text/atlas/ngc41a.htm#4185. 
  5. ↑ Toba, Y.; Oyabu, S.; Matsuhara, H.; Malkan, M. A.; Gandhi, P.; Nakagawa, T.; Isobe, N.; Shirahata, M. et al. (2014). "Luminosity and Redshift Dependence of the Covering Factor of Active Galactic Nuclei viewed with WISE and Sloan Digital Sky Survey". The Astrophysical Journal 788 (1): 45. doi:10.1088/0004-637X/788/1/45. Bibcode: 2014ApJ...788...45T. 
  6. ↑ "NGC 4185". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+4185. 
  7. ↑ Garcia, A. M. (1993). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series 100: 47. Bibcode: 1993A&AS..100...47G. 
  8. ↑ "LGG 276". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=LGG+276. 
  9. ↑ Szeidl, B.; Lovas, M. (1982). "Supernova in NGC 4185". International Astronomical Union Circular (3683): 1. Bibcode: 1982IAUC.3683....1S. http://www.cbat.eps.harvard.edu/iauc/03600/03683.html#item1. 
  10. ↑ "SN 1982C". IAU. https://www.wis-tns.org/object/1982C. 

Coordinates: Sky map 12h 13m 22.2035s, +28° 30′ 39.600″



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