Astronomy:NGC 5516

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NGC 5516
NGC 5516 imaged by SDSS
Observation data (J2000 epoch)
ConstellationCentaurus
Right ascension 14h 15m 54.7000s[1]
Declination−48° 06′ 53.257″[1]
Redshift0.013753±0.0000670[1]
Helio radial velocity4,123±20 km/s[1]
Distance226.68 ± 13.74 Mly (69.500 ± 4.212 Mpc)[1]
Group or clusterLDC 1050[2]
Apparent magnitude (V)13.00[1]
Characteristics
TypeSA0-(s)[1]
Size~232,300 ly (71.21 kpc) (estimated)[1]
Apparent size (V)1.8′ × 1.2′[1]
Other designations
ESO 221- G 034, PGC 50960[1]

NGC 5516 is a lenticular galaxy in the constellation of Centaurus. Its velocity with respect to the cosmic microwave background is 4,328±25 km/s, which corresponds to a Hubble distance of 208.2 ± 14.6 Mly (63.83 ± 4.49 Mpc).[1] However, three non-redshift measurements give a farther mean distance of 226.68 ± 13.74 Mly (69.500 ± 4.212 Mpc).[3] It was discovered by British astronomer John Herschel on 1 July 1834.[4]

NGC 5516 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.[2][5]

LDC 1050 Group

NGC 5516 is a member of a group of galaxies known as LDC 1050. This group contains six galaxies, including ESO 221-33 (d), ESO 271-26 (d), ESO 221-37 (d), 6dFGS gJ141604.6-480738 (d), and 2MASX J14143086-4826542 (d).[6][7]

Supernovae

Two supernovae have been observed in NGC 5516:

  • AT 2017kdz (also known as MASTER OT J141551.21-480802.6) (Type Ia, mag. 16.4) was discovered by MASTER robotic Net on 9 April 2017.[8][9][10]
  • SN 2026dez (Type Ia, mag. 18.642) was discovered by ATLAS on 14 February 2026.[11] This supernova has a significant projected separation of 110 kly (34 kpc) from NGC 5516.[12]

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 5516". NASA and Caltech. https://ned.ipac.caltech.edu/byname?objname=NGC+5516. 
  2. ↑ 2.0 2.1 "NGC 5516". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+5516. 
  3. ↑ "Distance Results for NGC 5516". NASA. https://ned.ipac.caltech.edu/cgi-bin/nDistance?name=NGC+5516. 
  4. ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 5516". https://cseligman.com/text/atlas/ngc55.htm#5516. 
  5. ↑ 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. 
  6. ↑ Crook, Aidan C.; Huchra, John P.; Martimbeau, Nathalie; Masters, Karen L.; Jarrett, Tom; Macri, Lucas M. (2007). "Groups of Galaxies in the Two Micron All Sky Redshift Survey". The Astrophysical Journal 655 (2): 790–813. doi:10.1086/510201. Bibcode: 2007ApJ...655..790C. 
  7. ↑ "[CHM2007 LDC 1050"]. SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=%5BCHM2007%5D+LDC+1050. 
  8. ↑ Pogrosheva, T.; Lipunov, V.; Podesta, R.; Levato, H.; Gorbovskoy, E.; Tiurina, N.; Balanutsa, P.; Kuznetsov, A. et al. (2017). "Master-Oafa PSN in NGC5516". The Astronomer's Telegram 10287: 1. Bibcode: 2017ATel10287....1P. https://www.astronomerstelegram.org/?read=10287. 
  9. ↑ Prieto, J. L.; Dong, S. (2017). "Spectroscopic Classification of MASTER OT J141551.21-480802.6 as a SN Ia". The Astronomer's Telegram 10347: 1. Bibcode: 2017ATel10347....1P. https://www.astronomerstelegram.org/?read=10347. 
  10. ↑ "AT 2017kdz". IAU. https://www.wis-tns.org/object/2017kdz. 
  11. ↑ "SN 2026dez". IAU. https://www.wis-tns.org/object/2026dez. 
  12. ↑ Smith, K. W.; Young, D. R.; Nicholl, M. (2026). "ATLAS26bty (AT2026dez): discovery of a rising transient 34 kpc offset from NGC 5516 (60 Mpc)". Transient Name Server Astronote 35: 1. Bibcode: 2026TNSAN..35....1S. https://www.wis-tns.org/astronotes/astronote/2026-35. 

Coordinates: Sky map 14h 15m 54.7000s, −48° 06′ 53.257″



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