NGC 4145

NGC 4145
Spitzer Space Telescope image of NGC 4145
Observation data (J2000[1] epoch)
ConstellationCanes Venatici[2]
Right ascension12h 10m 01.52s[1]
Declination39° 53′ 01.9″[1]
Redshift0.003366[1]
Distance68,000,000 light years[2]
Apparent magnitude (V)11.30[3]
Characteristics
TypeSAB(rs)d[1]
Apparent size (V)5.9' x 4.1'[3]
Other designations
UGC 7154, PGC 38693[3]

NGC 4145 is a barred spiral galaxy located 68 million light years from the Earth. The galaxy has little star formation, except on its outer edges. Due to the loss of energy that occurs without star formation, some astronomers predict that the galaxy will degenerate into a lenticular galaxy in the near future. However, the galaxy's interaction with NGC 4151 may "maintain [its] star formation".[2][4]

NGC 4145 is a member of the NGC 4151 Group.[5][6][7][8]

References

  1. ^ a b c d e "NED results for object NGC 4145". Retrieved 31 January 2015.
  2. ^ a b c "Barred Spiral Galaxy NGC 4145". spitzer.caltech.edu. Retrieved 30 January 2015.
  3. ^ a b c "NGC 4145". dso-browser.com. Archived from the original on 18 February 2015. Retrieved 18 February 2015.
  4. ^ "NGC 4145". noao.edu. Retrieved 30 January 2015.
  5. ^ Tully, R. Brent (1988). Nearby galaxies catalog (1. publ ed.). Cambridge: Cambridge University Press. ISBN 978-0-521-35299-4.
  6. ^ Fouque, P.; Gourgoulhon, E.; Chamaraux, P.; Paturel, G. (May 1992). "Groups of galaxies within 80 Mpc. II. The catalogue of groups and group members". Astronomy and Astrophysics Supplement Series. 93: 211–233. Bibcode:1992A&AS...93..211F. ISSN 0365-0138.
  7. ^ Giuricin, Giuliano; Marinoni, Christian; Ceriani, Lorenzo; Pisani, Armando (November 2000). "Nearby Optical Galaxies: Selection of the Sample and Identification of Groups". The Astrophysical Journal. 543 (1): 178–194. arXiv:astro-ph/0001140. Bibcode:2000ApJ...543..178G. doi:10.1086/317070. ISSN 0004-637X.
  8. ^ Kourkchi, Ehsan; Tully, R. Brent (2017-07-01). "Galaxy Groups Within 3500 km s −1". The Astrophysical Journal. 843 (1): 16. arXiv:1705.08068. doi:10.3847/1538-4357/aa76db. ISSN 0004-637X.
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