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NGC 7752 and NGC 7753

Coordinates: Sky map 23h 46m 58.5s, +29° 27′ 32″
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NGC 7752 / 7753
NGC 7753 (big) and 7752 (small, bottom right), imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
ConstellationPegasus
Right ascension23h 46m 58.5s / 23h 47m 04.8s[1]
Declination+29° 27′ 32″ / +29° 29′ 00″[1]
Heliocentric radial velocity5072 ± 5 / 5168 ± 6 km/s[1]
Distance272 Mly[2]
Apparent magnitude (V)15.0 / 12.8[1]
Characteristics
TypeI0 / SAB(rs)bc[1]
Apparent size (V)0.8′ × 0.5′ / 3.3′ × 2.1′[1]
Other designations
UGC 12779 / 12780,[1] PGC 72382 / 72387,[1] Arp 86[1]

NGC 7752 and NGC 7753 are a pair of galaxies approximately 272 million light-years away in the constellation Pegasus. They were discovered by R. J. Mitchell on 22 November 1854.[3]

NGC 7753 is the primary galaxy. It is a barred spiral galaxy with a small nucleus. NGC 7752 is the satellite galaxy of NGC 7753. It is a barred lenticular galaxy that is apparently attached to one of NGC 7753's spiral arms. They resemble the Whirlpool Galaxy (M51A) and its satellite NGC 5195 (M51B).

Supernovae

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Five supernovae have been observed in NGC 7753:

  • SN 2006A (type unknown, mag. 18.1) was discovered by Tom Boles on 2 January 2006.[4][5]
  • SN 2006ch (type Ia, mag. 16.5) was discovered by Kōichi Itagaki on 9 May 2006.[6][7]
  • SN 2013Q (type Ia, mag. 17.5) was discovered by Zhijian Xu and Xing Gao, and independently by Alessandro Dimai, on 25 January 2013.[8][9]
  • SN 2015ae (type II, mag. 17.3) was discovered by Kōichi Itagaki on 6 August 2015.[10]
  • SN 2025kyg (type Ia, mag. 15.7277) was discovered by the Automatic Learning for the Rapid Classification of Events (ALeRCE) on 21 May 2025.[11]

See also

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References

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  1. ^ a b c d e f g h i "NASA/IPAC Extragalactic Database". Results for NGC 7752 / 7753. Retrieved 2006-11-21.
  2. ^ Normandin, George. "NGC 7753 and NGC 7752 (aka Arp 86): Interacting Galaxies". Kopernik Observatory. Archived from the original on 3 March 2016. Retrieved 30 June 2015.
  3. ^ Seligman, Courtney. "New General Catalogue Objects: NGC 7752 (with NGC 7753 = Arp 86)". Celestial Atlas. Retrieved 20 May 2025.
  4. ^ Boles, Tom (2006). "Supernova 2006A in NGC 7753". International Astronomical Union Circular. 8656: 3. Bibcode:2006IAUC.8656....3B.
  5. ^ "SN 2006A". Transient Name Server. IAU. Retrieved 20 May 2025.
  6. ^ Quimby, R; Mondol, P; Itagaki, K; Nakano, S. (2006). "Supernovae 2006cg and 2006ch". International Astronomical Union Circular. 8711: 1. Bibcode:2006IAUC.8711....1Q.
  7. ^ "SN 2006ch". Transient Name Server. IAU. Retrieved 20 May 2025.
  8. ^ Xu, Zhijian; Gao, Xing; Koff, R. A.; Elenin, L.; Molotov, I.; Tomasella, L.; Benetti, S.; Cappellaro, E (2013). "Supernova 2013Q in NGC 7753 = Psn J23470787+2929115". Central Bureau Electronic Telegrams. 3401: 2. Bibcode:2013CBET.3401....2X.
  9. ^ "SN 2013Q". Transient Name Server. IAU. Retrieved 20 May 2025.
  10. ^ "SN 2015ae". Transient Name Server. IAU. Retrieved 20 May 2025.
  11. ^ "SN 2025kyg". Transient Name Server. IAU. Retrieved 21 May 2025.
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