DZ
DefZone.Net

Kien thuc cong nghe & giai tri

Wiki Article

NGC 5493

Nguồn dữ liệu từ Wikipedia, hiển thị bởi DefZone.Net

Xem trên WikipediaBài ngẫu nhiên khác

NGC 5493
NGC 5493 imaged by Legacy Surveys
Observation data (J2000 epoch)
ConstellationVirgo
Right ascension14h 11m 29.3824s[1]
Declination−05° 02′ 37.090″[1]
Redshift0.008889±0.0000170[1]
Heliocentric radial velocity2,665±5 km/s[1]
Distance64.73 ± 31.32 Mly (19.847 ± 9.602 Mpc)[1]
Group or clusterNGC 5427 group (LGG 374)
Apparent magnitude (V)12.27[1]
Characteristics
TypeS0 pec edge-on[1]
Size~41,100 ly (12.60 kpc) (estimated)[1]
Apparent size (V)1.6′ × 1.3′[1]
Other designations
2MASX J14112938-0502371, UGCA 386, MCG -01-36-013, PGC 50670[1]

NGC 5493 is a peculiar lenticular galaxy in the constellation of Virgo. Its velocity with respect to the cosmic microwave background is 2,929±19 km/s, which corresponds to a Hubble distance of 140.9 ± 9.9 Mly (43.20 ± 3.04 Mpc).[1] However, three non-redshift measurements give a much closer mean distance of 64.73 ± 31.32 Mly (19.847 ± 9.602 Mpc).[2] It was discovered by German-British astronomer William Herschel on 22 February 1787.[3][4]

NGC 5493 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.[5][6]

NGC 5427 group

[edit]

According to A. M. Garcia, NGC 5493 is a member of the NGC 5427 group (also known as LGG 374). This galaxy group has at least four other members, including NGC 5426, NGC 5427, NGC 5468, and NGC 5472 [fr].[7][8]

Supernova

[edit]

One supernova has been observed in NGC 5493:

See also

[edit]

References

[edit]
  1. ^ a b c d e f g h i j k "Results for object NGC 5493". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 13 December 2025.
  2. ^ "Distance Results for NGC 5493". NASA/IPAC Extragalactic Database. NASA. Retrieved 13 December 2025.
  3. ^ Herschel, W. (1789). "Catalogue of a Second Thousand of New Nebulae and Clusters of Stars; with a Few Introductory Remarks on the Construction of the Heavens". Philosophical Transactions of the Royal Society of London. 79: 212–255. Bibcode:1789RSPT...79..212H. doi:10.1098/rstl.1789.0021.
  4. ^ Seligman, Courtney. "New General Catalogue Objects: NGC 5493". Celestial Atlas. Retrieved 13 December 2025.
  5. ^ Asmus, D.; Greenwell, C. L.; Gandhi, P.; Boorman, P. G.; Aird, J.; Alexander, D. M.; Assef, R. J.; Baldi, R. D.; Davies, R. I.; Hönig, S. F.; Ricci, C.; Rosario, D. J.; Salvato, M.; Shankar, F.; Stern, D. (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. arXiv:2003.05959. Bibcode:2020MNRAS.494.1784A. doi:10.1093/mnras/staa766.
  6. ^ "NGC 5493". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 13 December 2025.
  7. ^ 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.
  8. ^ "LGG 374". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 13 December 2025.
  9. ^ Evans, R.; Cragg, T. (1990). "Supernova 1990M in NGC 5493". International Astronomical Union Circular (5033): 1. Bibcode:1990IAUC.5033....1E.
  10. ^ "SN 1990M". Transient Name Server. IAU. Retrieved 13 December 2025.
[edit]