Astronomy:NGC 7714

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NGC 7714
File:Heic1503a.tif
NGC 7714 imaged by the Hubble Space Telescope[1]
Observation data (J2000 epoch)
ConstellationPisces
Right ascension 23h 36m 14.1232s[2]
Declination+02° 09′ 18.133″[2]
Redshift0.009333[2]
Helio radial velocity2798 ± 1 km/s[2]
Distance116.9 ± 8.3 Mly (35.85 ± 2.54 Mpc)[2]
Apparent magnitude (V)12.2
Characteristics
TypeSB:(s)b? pec,[3] HII[4]
Size~67,100 ly (20.57 kpc) (estimated)[2]
Apparent size (V)1.90 × 1.4 moa[4]
Other designations
KCPG 587A, UM 167, HOLM 810A, IRAS 23336+0152, Arp 284, UGC 12699, MCG+00-60-017, PGC 71868[2]

NGC 7714 is a spiral galaxy in the constellation Pisces. Its velocity with respect to the cosmic microwave background is 2430 ± 26 km/s, which corresponds to a Hubble distance of 116.9 ± 8.3 Mly (35.85 ± 2.54 Mpc).[2] In addition, five non-redshift measurements give a distance of 92.24 ± 8.69 Mly (28.280 ± 2.664 Mpc).[5] It was discovered by British astronomer John Herschel on 18 September 1830.[6]

NGC 7714 and NGC 7715 are interacting galaxies.[4] The pair are included in Halton Arp's Atlas of Peculiar Galaxies, listed as Arp 284.[7] NGC 7714 appears to be a highly distorted spiral, possibly a barred spiral galaxy. NGC 7715 is of uncertain type, probably an edge-on spiral or an irregular galaxy.[3]

Supernovae

Three supernovae have been observed in NGC 7714:

  • SN 1999dn (Type Ib/c, mag. 16.3) was discovered by the BAO Supernova Survey on 19 August 1999.[8][3][9]
  • SN 2007fo (Type Ib/c, mag. 18.2) was discovered by the Lick Observatory Supernova Search on 9 July 2007.[10][11]
  • SN 2023pso (Type Ib, mag. 17.15) was discovered by GOTO on 7 August 2023.[12]
NGC 7714 (right) and NGC 7715 (left) imaged by legacy surveys

See also

References

  1. ↑ "The tell-tale signs of a galactic merger". http://www.spacetelescope.org/news/heic1503/. Retrieved 24 June 2015. 
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 "Results for object NGC 7714". NASA and Caltech. https://ned.ipac.caltech.edu/byname?objname=NGC+7714. 
  3. ↑ 3.0 3.1 3.2 Galaxies NGC 7714 & NGC 7715 (Arp 284) at Kopernik Observatory & Science Center
  4. ↑ 4.0 4.1 4.2 "Centre de Données astronomiques de Strasbourg". Results for NGC 7714. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=ngc7714. Retrieved 2010-11-07. 
  5. ↑ "Distance Results for NGC 7714". NASA. https://ned.ipac.caltech.edu/cgi-bin/nDistance?name=NGC+7714. 
  6. ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 7714". https://cseligman.com/text/atlas/ngc77.htm#7714. 
  7. ↑ Arp, Halton (1966). Atlas of peculiar galaxies. Bibcode: 1966apg..book.....A. 
  8. ↑ Qiu, Y. L.; Qiao, Q. Y.; Hu, J. Y.; Zhou, X.; Zheng, Z. (1999). "Supernova 1999dn in NGC 7714". International Astronomical Union Circular (7241): 1. Bibcode: 1999IAUC.7241....1Q. http://www.cbat.eps.harvard.edu/iauc/07200/07241.html#Item1. 
  9. ↑ "SN 1999dn". IAU. https://www.wis-tns.org/object/1999dn. 
  10. ↑ Khandrika, H.; Li, W. (2007). "Supernova 2007fo in NGC 7714". Central Bureau Electronic Telegrams 997: 1. Bibcode: 2007CBET..997....1K. http://www.cbat.eps.harvard.edu/cbet/000900/CBET000997.txt. 
  11. ↑ "SN 2007fo". IAU. https://www.wis-tns.org/object/2007fo. 
  12. ↑ "SN 2023pso". IAU. https://www.wis-tns.org/object/2023pso. 

Coordinates: Sky map 23h 36m 14.1232s, +02° 09′ 18.133″



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