Astronomy:NGC 4708

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NGC 4708
NGC 4708 imaged by Legacy Surveys
Observation data (J2000 epoch)
ConstellationVirgo
Right ascension 12h 49m 41.4813s[1]
Declination−11° 05′ 34.679″[1]
Redshift0.013900±0.0000270[1]
Helio radial velocity4,167±8 km/s[1]
Distance204.76 ± 19.97 Mly (62.780 ± 6.122 Mpc)[1]
Group or clusterHolm 463
Apparent magnitude (V)13.1[1]
Characteristics
TypeSA(r)ab pec[1]
Size~118,100 ly (36.22 kpc) (estimated)[1]
Apparent size (V)1.2′ × 0.9′[1]
Other designations
HOLM 463A, IRAS 12470-1049, MCG-02-33-016, PGC 43382[1]

NGC 4708 is a peculiar spiral galaxy in the constellation of Virgo. Its velocity with respect to the cosmic microwave background is 4,505±25 km/s, which corresponds to a Hubble distance of 216.7 ± 15.2 Mly (66.44 ± 4.67 Mpc).[1] However, 15 non-redshift measurements give a closer mean distance of 204.76 ± 19.97 Mly (62.780 ± 6.122 Mpc).[2] It was discovered by German-British astronomer William Herschel on 11 March 1788.[3]

NGC 4708 has a possible active galactic nucleus, i.e. it has a compact region at the center of a galaxy that emits a significant amount of energy across the electromagnetic spectrum, with characteristics indicating that this luminosity is not produced by the stars.[4][5]

NGC 4708 and neighboring galaxy LEDA 970118 (d) are listed together as Holm 463 in Erik Holmberg's A Study of Double and Multiple Galaxies Together with Inquiries into some General Metagalactic Problems, published in 1937.[6]

Supernovae

Three supernovae have been observed in NGC 4708:

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 4708". NASA and Caltech. https://ned.ipac.caltech.edu/byname?objname=NGC+4708. 
  2. ↑ "Distance Results for NGC 4708". NASA. https://ned.ipac.caltech.edu/cgi-bin/nDistance?name=NGC+4708. 
  3. ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 4708". https://cseligman.com/text/atlas/ngc47.htm#4708. 
  4. ↑ Asmus, D.; Greenwell, C. L.; Gandhi, P.; Boorman, P. G.; Aird, J.; Alexander, D. M.; Assef, R. J.; Baldi, R. D. et al. (2020). "Local AGN survey (LASr): I. Galaxy sample, infrared colour selection, and predictions for AGN within 100 MPC". Monthly Notices of the Royal Astronomical Society 494 (2): 1784. doi:10.1093/mnras/staa766. Bibcode: 2020MNRAS.494.1784A. 
  5. ↑ "NGC 4708". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+4708. 
  6. ↑ Holmberg, Erik (1937). "A Study of Double and Multiple Galaxies Together with Inquiries into some General Metagalactic Problems". Annals of the Observatory of Lund 6: 1. Bibcode: 1937AnLun...6....1H. 
  7. ↑ Weisz, D.; Li, W. (2003). "Supernova 2003ef in NGC 4708". International Astronomical Union Circular (8131): 1. Bibcode: 2003IAUC.8131....1W. http://www.cbat.eps.harvard.edu/iauc/08100/08131.html#Item1. 
  8. ↑ "SN 2003ef". IAU. https://www.wis-tns.org/object/2003ef. 
  9. ↑ Puckett, T.; Langoussis, A. (2005). "Supernova 2005bo in NGC 4708". International Astronomical Union Circular (8514): 1. Bibcode: 2005IAUC.8514....1P. http://www.cbat.eps.harvard.edu/iauc/08500/08514.html#Item1. 
  10. ↑ "SN 2005bo". IAU. https://www.wis-tns.org/object/2005bo. 
  11. ↑ Tonry, J.; Denneau, L.; Stalder, B.; Heinze, A.; Sherstyuk, A.; Rest, A.; Smith, K. W.; Smartt, S. J. et al. (2016). "ATLAS discovery of bright nuclear transient flux in NGC4708 : ATLAS16bdg". The Astronomer's Telegram 9151: 1. Bibcode: 2016ATel.9151....1T. https://www.astronomerstelegram.org/?read=9151. 
  12. ↑ Mundell, C. G.; Smith, R. J.; Childress, M. J. (2016). "Liverpool Telescope classification of ATLAS16bdg as a Type Ia supernova near maximum light". The Astronomer's Telegram 9165: 1. Bibcode: 2016ATel.9165....1M. https://www.astronomerstelegram.org/?read=9165. 
  13. ↑ "SN 2016cvn". IAU. https://www.wis-tns.org/object/2016cvn. 

Coordinates: Sky map 12h 49m 41.4813s, −11° 05′ 34.679″



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