Jump to content

NGC 4666

From Wikipedia, the free encyclopedia
(Redirected from NGC 4666 Group)
NGC 4666
The superwind galaxy NGC 4666
Observation data (J2000 epoch)
ConstellationVirgo
Right ascension12h 45m 08.676s[1]
Declination−00° 27′ 42.88″[1]
Heliocentric radial velocity1,517 km/s[2]
Distance54.89 ± 0.65 Mly (16.83 ± 0.20 Mpc)[3]
Apparent magnitude (V)10.8[4]
Characteristics
TypeSABc[2]
Apparent size (V)4′.6 × 1'.3[2]
Notable featuresStarburst
Other designations
NGC 4666, IRAS F12425-0011, MCG+00-33-008, MRC 1242-001, PMN J1245-0027, UGC 7926, UZC J124508.0-002744, PGC 42975[5]

NGC 4666 is a spiral galaxy in the equatorial constellation of Virgo, located at a distance of approximately 55 megalight-years from the Milky Way.[3] It was discovered by the German-born astronomer William Herschel on February 22, 1784. It is a member of the Virgo II Groups, a series of galaxies and galaxy clusters strung out from the southern edge of the Virgo Supercluster.[6][7] John L. E. Dreyer described it as "bright, very large, much extended 45°±, pretty suddenly brighter middle".[8] It is a member of an interacting system with NGC 4668 and a dwarf galaxy,[9] and belongs to a small group that also includes NGC 4632,[2] that is known as the NGC 4666 Group.[10][11]

The morphological classification of this galaxy is SABc, which indicates a weak bar around the nucleus with moderately wound spiral arms. Viewed nearly edge-on, its galactic plane is inclined at an angle of 85°±2° to the line of sight from the Earth, with the major axis aligned along a position angle of 40°. There is an active galactic nucleus that shows a modest level of activity and is most likely heavily obscured by gas and dust. The central point source has been detected in the radio and X-ray bands.[2]

This is a starburst galaxy that is noteworthy for its vigorous star formation, which creates an unusual superwind[12] of out-flowing gas. This wind is not visible at optical wavelengths, but is prominent in X-rays, and has been observed by the ESA XMM-Newton space telescope.[13] The estimated star formation rate is 7.3 M☉ yr–1, with a density of 8.9×10−3 M☉ yr−1 kpc−2. Unlike in many other starburst galaxies, the star formation is spread across the disk rather than being more concentrated.[2]

Supernovae

[edit]

Three supernovae have been observed in NGC 4666:

  • SN 1965H (type IIP, mag. 14) was discovered by Enrique Chavira on 23 May 1965.[14][15]
  • ASASSN-14lp (type Ia, mag. 14.3) was discovered by ASAS-SN on 9 December 2014; it was located 12″ from the center of the galaxy.[16][17]
  • SN 2019yvr (type Ib, mag. 15.882) was discovered by ATLAS on 27 December 2019.[18][19] It has a 0.005 redshift. Images of the location of the supernova before the explosion showed the progenitor star was ~19M☉.[20]
Enlarged view of the center of NGC 4666 by the Hubble Space Telescope

References

[edit]
  1. ^ a b Skrutskie, Michael F.; Cutri, Roc M.; Stiening, Rae; Weinberg, Martin D.; Schneider, Stephen E.; Carpenter, John M.; Beichman, Charles A.; Capps, Richard W.; Chester, Thomas; Elias, Jonathan H.; Huchra, John P.; Liebert, James W.; Lonsdale, Carol J.; Monet, David G.; Price, Stephan; Seitzer, Patrick; Jarrett, Thomas H.; Kirkpatrick, J. Davy; Gizis, John E.; Howard, Elizabeth V.; Evans, Tracey E.; Fowler, John W.; Fullmer, Linda; Hurt, Robert L.; Light, Robert M.; Kopan, Eugene L.; Marsh, Kenneth A.; McCallon, Howard L.; Tam, Robert; Van Dyk, Schuyler D.; Wheelock, Sherry L. (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.
  2. ^ a b c d e f Stein, Y.; et al. (March 2019). "CHANG-ES. XIII. Transport processes and the magnetic fields of NGC 4666: indication of a reversing disk magnetic field". Astronomy & Astrophysics. 623: 21. arXiv:1901.08090. Bibcode:2019A&A...623A..33S. doi:10.1051/0004-6361/201834515. A33.
  3. ^ a b Tully, R. Brent; et al. (October 2013), "Cosmicflows-2: The Data", The Astronomical Journal, 146 (4): 25, arXiv:1307.7213, Bibcode:2013AJ....146...86T, doi:10.1088/0004-6256/146/4/86, S2CID 118494842, 86
  4. ^ "The Interactive NGC Catalog Online". Results for NGC 4666. Retrieved 2010-09-21.
  5. ^ "NGC 4666". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-09-22.
  6. ^ "The Virgo II Groups". www.atlasoftheuniverse.com. Retrieved 2025-05-18.
  7. ^ Tully, R. Brent (1988). Nearby galaxies catalog (1. publ ed.). Cambridge: Cambridge University Press. ISBN 978-0-521-35299-4.
  8. ^ Seligman, Courtney. "New General Catalogue objects: NGC 4650 - 4699". cseligman.com. Retrieved 2020-09-20.
  9. ^ Walter, Fabian; et al. (May 2004). "The Superwind Galaxy NGC 4666: Gravitational Interactions and the Influence of the Resulting Starburst on the Interstellar Medium". The Astrophysical Journal. 606 (1): 258–270. Bibcode:2004ApJ...606..258W. doi:10.1086/382774.
  10. ^ 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. ISSN 0365-0138.
  11. ^ Garcia, A. M. (July 1993). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series. 100: 47–90. ISSN 0365-0138.
  12. ^ "The Superwind Galaxy". ESO. 1 September 2010.
  13. ^ "Extra-planar Hot Gas and Magnetic Fields in the Superwind Galaxy NGC 4666". ESA. 24 February 2011. Archived from the original on 22 October 2014. Retrieved 24 February 2011.
  14. ^ Gingerich, Owen (26 May 1965). "Circular No. 1908". Central Bureau for Astronomical Telegrams. Smithsonian Astrophysical Observatory. Retrieved 1 December 2024.
  15. ^ "SN 1965H". Transient Name Server. IAU. Retrieved 1 December 2024.
  16. ^ Fox, Derek (9 December 2014). "ASAS-SN Discovery of A Bright Probable Supernova in NGC 4666". The Astronomer's Telegram. Retrieved 1 December 2024.
  17. ^ Bishop, David. "Supernovae ASASSN-14lp in NGC 4666". Rochester Astronomy.
  18. ^ Smith, K. W.; Srivastav, S.; McBrien, O.; Smartt, S. J.; Gillanders, J.; Clark, P.; Fulton, M.; O'Neill, D.; Young, D. R.; McCollum, M.; Chen, T. W.; Anderson, J.; Denneau, L.; Flewelling, H.; Heinze, A.; Tonry, J.; Weiland, H.; Stalder, B.; Rest, A.; Wright, D. E. (2019). "ATLAS19benc (AT2019yvr): Discovery of a candidate SN in NGC 4666 (26 MPC)". Transient Name Server Astronote. 161: 1. Bibcode:2019TNSAN.161....1S.
  19. ^ "SN 2019yvr". Transient Name Server. IAU. Retrieved 1 December 2024.
  20. ^ Kilpatrick, Charles; et al. (2021-03-30). "A Cool and Inflated Progenitor Candidate for the Type Ib Supernova 2019yvr at 2.6 Years Before Explosion". Monthly Notices of the Royal Astronomical Society. 504 (2): 2073–2093. arXiv:2101.03206. doi:10.1093/mnras/stab838.
[edit]
Wikimedia Commons has media related to NGC 4666.
Retrieved from "https://en.wikipedia.org/w/index.php?title=NGC_4666&oldid=1291051116"