Astronomy:NGC 4219

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NGC 4219
File:300px
NGC 4219 imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
ConstellationCentaurus
Right ascension 12h 16m 27.3732s[1]
Declination−43° 19′ 26.839″[1]
Redshift0.006635±0.0000100[1]
Helio radial velocity1,989±3 km/s[1]
Distance72.00 ± 2.21 Mly (22.075 ± 0.679 Mpc)[2]
Apparent magnitude (V)12.71[1]
Characteristics
TypeSA(s)bc[1]
Size~111,000 ly (34.03 kpc) (estimated)[1]
Apparent size (V)4.3′ × 1.3′[1]
Other designations
ESO 267- G 037, IRAS 12138-4302, MCG-07-25-005, PGC 39315[1]

NGC 4219 is a spiral galaxy in the constellation of Centaurus. Its velocity with respect to the cosmic microwave background is 2,277±20 km/s, which corresponds to a Hubble distance of 109.6 ± 7.7 Mly (33.59 ± 2.37 Mpc).[1] However, 16 non-redshift measurements give a closer mean distance of 72.00 ± 2.21 Mly (22.075 ± 0.679 Mpc).[2] It was discovered by British astronomer John Herschel on 3 June 1834.[3][4]

NGC 4219 is a Seyfert I galaxy, i.e. it has a quasar-like nucleus with very high surface brightnesses whose spectra reveal strong, high-ionisation emission lines, but unlike quasars, the host galaxy is clearly detectable.[5][6]

Supernovae

Two supernovae have been observed in NGC 4219:

  • SN 2011am (Type Ib, mag. 17.4) was discovered by Australian amateur astronomer Stuart Parker on 27 February 2011.[7][8]
  • SN 2011hp (Type Ic, mag. 15.7) was discovered by South African amateur astronomer Berto Monard (it) on 3 November 2011.[9][10]
  • NGC 4219 imaged by SDSS
    NGC 4219 imaged by SDSS

See also

References

  1. ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 "Results for object NGC 4219". NASA and Caltech. https://ned.ipac.caltech.edu/byname?objname=NGC+4219. 
  2. ↑ 2.0 2.1 "Distance Results for NGC 4219". NASA. https://ned.ipac.caltech.edu/cgi-bin/nDistance?name=NGC+4219. 
  3. ↑ Herschel, J. F. W (1864). "Catalogue of Nebulae and Clusters of Stars". Philosophical Transactions of the Royal Society of London 154: 1–137. doi:10.1098/rstl.1864.0001. Bibcode: 1864RSPT..154....1H. 
  4. ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 4219". https://cseligman.com/text/atlas/ngc42.htm#4219. 
  5. ↑ Chen, Yan-Ping; Zaw, Ingyin; Farrar, Glennys R.; Elgamal, Sana (2022). "A Uniformly Selected, Southern-sky 6dF, Optical AGN Catalog". The Astrophysical Journal Supplement Series 258 (2): 29. doi:10.3847/1538-4365/ac4157. Bibcode: 2022ApJS..258...29C. 
  6. ↑ "NGC 4219". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+4219. 
  7. ↑ Morrell, N.; Stritzinger, M. (2011). "Supernova 2011am in NGC 4219 = PSN J12162600-4319200". Central Bureau Electronic Telegrams (2667): 1. Bibcode: 2011CBET.2667....1M. http://www.cbat.eps.harvard.edu/iau/cbet/002600/CBET002667.txt. 
  8. ↑ "SN 2011am". IAU. https://www.wis-tns.org/object/2011am. 
  9. ↑ Monard, L. A. G.; Stritzinger, M.; Foley, R. J. (2011). "Supernova 2011hp in NGC 4219 = PSN J12162547-4319469". Central Bureau Electronic Telegrams (2899): 1. Bibcode: 2011CBET.2899....1M. http://www.cbat.eps.harvard.edu/iau/cbet/002800/CBET002899.txt. 
  10. ↑ "SN 2011hp". IAU. https://www.wis-tns.org/object/2011hp. 

Coordinates: Sky map 12h 16m 27.3732s, −43° 19′ 26.839″



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