NGC 673

NGC 673
Spiral galaxy NGC 673
Observation data (J2000 epoch)
ConstellationAries
Right ascension01h 48m 22.4795s[1]
Declination+11° 31′ 17.323″[1]
Redshift0.017289[1]
Heliocentric radial velocity5183 ± 1 km/s[1]
Distance235.4 ± 16.5 Mly (72.18 ± 5.06 Mpc)[1]
Group or clusterNGC 673 Group (LGG 31)
Apparent magnitude (V)12.6[1]
Characteristics
TypeSAB(s)c[1]
Size~137,900 ly (42.27 kpc) (estimated)[1]
Apparent size (V)2.1′ × 1.7′[1]
Other designations
IRAS 01457+1116, 2MASX J01482246+1131176, UGC 1259, MCG +02-05-033, PGC 6624, CGCG 437-030[1]

NGC 673 is an intermediate spiral galaxy in the constellation of Aries. Its velocity with respect to the cosmic microwave background is 4894 ± 20 km/s, which corresponds to a Hubble distance of 235.4 ± 16.5 Mly (72.18 ± 5.06 Mpc).[1] In addition, 31 non redshift measurements give a distance of 206.09 ± 5.54 Mly (63.187 ± 1.699 Mpc).[2] The galaxy was discovered by German-British astronomer William Herschel on 4 September 1786.[3]

According to A.M. Garcia, NGC 673 is the namesake of the NGC 673 Group (also known as LGG 31). This group contains at least 17 galaxies, including IC 156, IC 162, NGC 665, NGC 677, NGC 683, and 11 galaxies from the UGC catalogue.[4]

Supernovae

Two supernovae have been observed in NGC 673:

See also

References

  1. ^ a b c d e f g h i j k "Results for object NGC 673". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 14 November 2024.
  2. ^ "Distance Results for NGC 673". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 14 November 2024.
  3. ^ Seligman, Courtney. "NGC 673". Celestial Atlas. Retrieved 14 November 2024.
  4. ^ 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.
  5. ^ Li, W. -D.; Qiao, Q.; Qiu, Y.; Hu, J.; Armstrong, M.; Hurst, G. M.; Garradd, G. J.; Turatto, M.; Benetti, S.; Lemke, M. (1996). "Supernova 1996bo in NGC 673". International Astronomical Union Circular (6497): 1. Bibcode:1996IAUC.6497....1L.
  6. ^ "SN 1996bo". Transient Name Server. IAU. Retrieved 14 November 2024.
  7. ^ Papenkova, M.; Li, W. D. (2001). "Supernova 2001fa in NGC 673". International Astronomical Union Circular (7737): 1. Bibcode:2001IAUC.7737....1P.
  8. ^ "SN 2001fa". Transient Name Server. IAU. Retrieved 14 November 2024.

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