NGC 309

In this article we are going to address the topic of NGC 309, which has gained relevance in recent times due to its impact on various aspects of society. NGC 309 has become a topic of debate in different areas, generating conflicting opinions and awakening great interest in its influence on daily life. In this sense, it is essential to thoroughly analyze the implications of NGC 309, as well as its evolution over time and its future projection. In this way, we seek to provide a comprehensive view of NGC 309 and provide relevant information that allows us to understand its importance in the current context.

NGC 309
SDSS image of NGC 309
Observation data (J2000 epoch)
ConstellationCetus
Right ascension00h 56m 42.653s[1]
Declination−09° 54′ 49.883″[1]
Redshift0.018883[1]
Heliocentric radial velocity5661 ± 2 km/s[1]
Distance87.99 ± 10.45 Mly (26.978 ± 3.205 Mpc)[1]
Apparent magnitude (V)13.4g[1]
Characteristics
TypeSAB(r)c[1]
Size~80,900 ly (24.81 kpc) (estimated)[1]
Apparent size (V)1.94′ × 1.34′[1]
Other designations
HOLM 027A, IRAS 00542-1010, 2MASX J00564266-0954500, MCG -02-03-050, PGC 3377[1]

NGC 309 is a spiral galaxy in the constellation Cetus. Its velocity with respect to the cosmic microwave background is 5343 ± 22 km/s, which corresponds to a Hubble distance of 257.0 ± 18.0 Mly (78.81 ± 5.53 Mpc).[1] However, nine non-redshift measurements give a much closer distance of 87.99 ± 10.45 Mly (26.978 ± 3.205 Mpc).[2] It was discovered in 1876 by Wilhelm Tempel.[3]

NGC 309 and NGC 309A are listed together as Holm 27 in Erik Holmberg's A Study of Double and Multiple Galaxies Together with Inquiries into some General Metagalactic Problems, published in 1937.[4]

Supernovae

Five supernovae have been observed in NGC 309.

Supernovae in NGC 309
Supernova apmag type Discovery date
1999ge[5] 15.5 II 27 November 1999
2008cx[6] 17.8 IIb 5 June 2008
2012dt[7] 18.0 IIP 17 July 2012
PSN J00564446-0954595[8] 17.2 IIb 10 June 2013
2014ef[9][10] 17.3 Ib 13 December 2014

See also

References

  1. ^ a b c d e f g h i j k "NASA/IPAC Extragalactic Database". Results for NGC 0309. Retrieved September 2, 2016.
  2. ^ "Distance Results for NGC 309". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved November 22, 2024.
  3. ^ "New General Catalog Objects: NGC 300 - 349". Cseligman. Retrieved October 20, 2016.
  4. ^ Holmberg, Erik (1937). "A Study of Double and Multiple Galaxies Together with Inquiries into some General Metagalactic Problems". Annals of the Observatory of Lund. 6: 1. Bibcode:1937AnLun...6....1H.
  5. ^ "SN 1999ge". Transient Name Server. IAU. Retrieved November 22, 2024.
  6. ^ "SN 2008cx". Transient Name Server. IAU. Retrieved November 22, 2024.
  7. ^ "SN 2012dt". Transient Name Server. IAU. Retrieved November 22, 2024.
  8. ^ Fox, Derek (June 17, 2013). "FIRE Classification of Supernova in NGC 309". The Astronomer's Telegram. Retrieved November 22, 2024.
  9. ^ 2014ef in NGC 309 (David Bishop)
  10. ^ "SN 2014ef". Transient Name Server. IAU. Retrieved November 22, 2024.
  • Media related to NGC 309 at Wikimedia Commons
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