Astronomy:NGC 3120

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NGC 3120
NGC 3120 imaged by DSS
Observation data (J2000 epoch)
ConstellationAntlia
Right ascension 10h 05m 23.0413s[1]
Declination−34° 13′ 11.847″[1]
Redshift0.009300±0.00000500[1]
Helio radial velocity2,788±1 km/s[1]
Distance97.19 ± 5.92 Mly (29.800 ± 1.816 Mpc)[2]
Group or clusterNGC 3038 Group (LGG 184)
Apparent magnitude (V)13.52[1]
Characteristics
TypeSAB(s)bc[1]
Size~79,200 ly (24.27 kpc) (estimated)[1]
Apparent size (V)1.8′ × 1.2′[1]
Other designations
ESO 374- G 029, IRAS 10031-3358, MCG-06-22-017, PGC 29278[1]

NGC 3120 is an intermediate spiral galaxy in the constellation of Antlia. Its velocity with respect to the cosmic microwave background is 3,105±22 km/s, which corresponds to a Hubble distance of 149.4 ± 10.5 Mly (45.80 ± 3.22 Mpc).[1] However, 17 non-redshift measurements give a much closer mean distance of 97.19 ± 5.92 Mly (29.800 ± 1.816 Mpc).[2] It was discovered by British astronomer John Herschel on 22 January 1838.[3]

NGC 3120 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 3038 Group

NGC 3120 is a member of the NGC 3038 group (also known as LGG 184). This group has 6 galaxies, including NGC 3038 (fr), NGC 3087, IC 2532 (fr), ESO 373-21 (d), and ESO 373-26 (d).[6][7]

Supernovae

Two supernovae have been observed in NGC 3120:

  • SN 1999ca (Type II, mag. 17) was discovered by S. Woodings, R. Martin, and A. Williams on 27 April 1999.[8][9]
  • SN 2010F (Type II, mag. 14.8) was discovered by The CHilean Automatic Supernova sEarch (CHASE) on 13 January 2010.[10][11]

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 3120". NASA and Caltech. https://ned.ipac.caltech.edu/byname?objname=NGC+3120. 
  2. ↑ 2.0 2.1 "Distance Results for NGC 3120". NASA. https://ned.ipac.caltech.edu/cgi-bin/nDistance?name=NGC+3120. 
  3. ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 3120". https://cseligman.com/text/atlas/ngc31.htm#3120. 
  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 3120". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+3120. 
  6. ↑ Garcia, A. M. (1993). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series 100: 47. Bibcode: 1993A&AS..100...47G. 
  7. ↑ "LGG 184". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=LGG+184. 
  8. ↑ Woodings, S.; Martin, R.; Williams, A.; Verveer, A.; Biggs, J. (1999). "Supernova 1999ca in NGC 3120". International Astronomical Union Circular (7158): 1. Bibcode: 1999IAUC.7158....1W. http://www.cbat.eps.harvard.edu/iauc/07100/07158.html#Item1. 
  9. ↑ "SN 1999ca". IAU. https://www.wis-tns.org/object/1999ca. 
  10. ↑ Maza, J.; Hamuy, M.; Antezana, R.; Gonzalez, L.; Lopez, P.; Silva, S.; Folatelli, G.; Cartier, R. et al. (2010). "Supernova 2010F in NGC 3120". Central Bureau Electronic Telegrams (2125): 1. Bibcode: 2010CBET.2125....1M. http://www.cbat.eps.harvard.edu/cbet/002100/CBET002125.txt. 
  11. ↑ "SN 2010F". IAU. https://www.wis-tns.org/object/2010F. 

Coordinates: Sky map 10h 05m 23.0413s, −34° 13′ 11.847″}



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