NGC 908

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NGC 908
NGC908.jpg
NGC 908 imaged by the Very Large Telescope of ESO.
Observation data (J2000 epoch)
Constellation Cetus
Right ascension 02h 23m 04.6s [1]
Declination −21° 14′ 02″ [1]
Redshift 1509 ± 5 km/s [1]
Distance 56.0 ± 5.7 Mly (17.2 ± 1.8 Mpc) [1]
Group or cluster NGC 908 group
Apparent magnitude  (V)10.83 [2]
Characteristics
Type SA(s)c [1]
Apparent size  (V)6′.0 × 2′.6 [1]
Other designations
UGCA 27, MCG -04-06-035, PGC 9057 [2]

NGC 908 is an unbarred spiral galaxy in the constellation Cetus. It was discovered on 20 September 1786 by William Herschel. [3] This galaxy is 56 million light years away from Earth. It is the main galaxy in the NGC 908 group, which also includes NGC 899, NGC 907, and IC 223. [4]

Contents

NGC 908 has vigorous star formation and is a starburst galaxy. The galaxy has a three-arm spiral pattern; two of its arms have peculiar morphology. The galaxy has a bright central bulge. Clusters of young stars and star-forming knots can be seen in the arms. Starburst activity and the peculiar morphology of the galaxy indicate it had a close encounter with another galaxy, although none are visible now. [5]

Two supernovae have been observed in NGC 908: SN 1994ai (type Ic, mag. 17) [6] and SN 2006ce (type Ia, mag. 12.4). [7] [8] Also, one luminous blue variable has been observed in this galaxy: AT 2021ablz (type LBV, mag. 20.6). [9]

See also

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<span class="mw-page-title-main">NGC 958</span> Galaxy in the constellation Cetus

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<span class="mw-page-title-main">NGC 664</span> Galaxy in the constellation Pisces

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<span class="mw-page-title-main">NGC 735</span> Galaxy in the constellation Triangulum

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<span class="mw-page-title-main">NGC 1233</span> Galaxy in the constellation Perseus

NGC 1233 is a spiral galaxy in the constellation of Perseus. Its velocity with respect to the cosmic microwave background is 4218 ± 14 km/s, which corresponds to a Hubble distance of 202.9 ± 14.2 Mly (62.22 ± 4.36 Mpc). In addition, three non redshift measurements give a distance of 211.35 ± 2.14 Mly (64.800 ± 0.656 Mpc). The galaxy was discovered by French astronomer Édouard Stephan on 10 December 1871. It is also thought to have been observed by Lewis Swift on 21 October 1886, and later listed as NGC 1235.

References

  1. 1 2 3 4 5 6 "Results for NGC 908". NASA/IPAC Extragalactic Database. Retrieved 2006-11-18.
  2. 1 2 "Your NED Search Results". NASA/IPAC Extragalactic Database. Retrieved 2020-11-09.
  3. ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 908". Celestial Atlas. Retrieved 29 August 2024.
  4. ↑ Dmitry Makarov and Igor Karachentsev (2011). "Galaxy groups and clouds in the local (z∼ 0.01) Universe". MNRAS. 412 (4): 2498–2520. arXiv: 1011.6277 . Bibcode:2011MNRAS.412.2498M. doi: 10.1111/j.1365-2966.2010.18071.x . S2CID   119194025.
  5. ↑ "The Starburst Galaxy NGC 908". ESO. 26 July 2006. Retrieved 9 November 2020.
  6. ↑ Transient Name Server entry for SN 1994ai. Retrieved 30 March 2023.
  7. ↑ "List of Supernovae". IAU Central Bureau for Astronomical Telegrams. Retrieved 29 December 2015.
  8. ↑ Transient Name Server entry for SN 2006ce. Retrieved 30 March 2023.
  9. ↑ "SN 2021ablz". Transient Name Server. IAU . Retrieved 22 August 2024.
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