NGC 772

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NGC 772
NGC772 - Noirlab2209a.jpg
NGC 772 imaged by the Gemini Observatory [1]
Observation data (J2000 epoch)
Constellation Aries
Right ascension 01h 59m 19.5443s [2]
Declination +19° 00′ 27.751″ [2]
Redshift 0.008236 [2]
Heliocentric radial velocity 2469 ± 2 km/s [2]
Distance 105.7 ± 7.5  Mly (32.42 ± 2.29  Mpc) [2]
Apparent magnitude  (V)11.1 [2]
Characteristics
Type SA(s)b [2]
Size~204,000  ly (62.56  kpc) (estimated) [2]
Apparent size  (V)7.2′ × 4.3′ [2]
Other designations
IRAS 01565+1845, Arp 78, UGC 1466, MCG +03-06-011, PGC 7525, CGCG 461-018 [2]

NGC 772 (also known as Arp 78 or the Fiddlehead Galaxy [3] ) is a large unbarred spiral galaxy approximately 106 million light-years away in the constellation Aries. It was discovered on 29 November 1785 by German-British astronomer William Herschel. [4]

Contents

Characteristics

At around 200,000 light years in diameter, NGC 772 is somewhat larger than the Milky Way Galaxy, [5] and is surrounded by several satellite galaxies – including the dwarf elliptical, NGC 770 – whose tidal forces on the larger galaxy have likely caused the emergence of a single elongated outer spiral arm that is much more developed and stronger than the others arms. Halton Arp includes NGC 772 in his Atlas of Peculiar Galaxies as Arp 78 , where it is described as a "Spiral galaxy with a small high-surface brightness companion".

NGC 772 probably has a H II nucleus, but it may be a transitional object. [6]

Supernovae

Two supernovae in the galaxy (SN 2003hl & 2003iq) and asteroid 6223 Dahl passing through the shot NGC772 SN2003hl SN2003iq 6223 Dahl.jpg
Two supernovae in the galaxy (SN 2003hl & 2003iq) and asteroid 6223 Dahl passing through the shot

Three supernovae have been observed in NGC 772:

See also

Related Research Articles

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<span class="mw-page-title-main">NGC 5253</span> Irregular galaxy in the M83 group of galaxies

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<span class="mw-page-title-main">NGC 7714</span> Galaxy in the constellation Pisces

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<span class="mw-page-title-main">NGC 3938</span> Galaxy in the constellation Ursa Major

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<span class="mw-page-title-main">NGC 524</span> Lenticular galaxy in the constellation Pisces

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<span class="mw-page-title-main">NGC 1084</span> Galaxy in the constellation Eridanus

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<span class="mw-page-title-main">NGC 1961</span> Galaxy in the constellation Camelopardis

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<span class="mw-page-title-main">NGC 4647</span> Spiral galaxy in the constellation Virgo

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<span class="mw-page-title-main">NGC 521</span> Spiral galaxy in the constellation Cetus

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<span class="mw-page-title-main">NGC 1325</span> Galaxy in the constellation Eridanus

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

NGC 735 is a spiral galaxy in the constellation of Triangulum. Its velocity with respect to the cosmic microwave background is 4374 ± 18 km/s, which corresponds to a Hubble distance of 210.4 ± 14.7 Mly (64.52 ± 4.52 Mpc). In addition, eight non redshift measurements give a distance of 227.21 ± 7.99 Mly (69.662 ± 2.449 Mpc). The galaxy was discovered by German-British astronomer William Herschel on 13 September 1784).

References

  1. ↑ "Strong-Arming a Galaxy". NOIRLab. Retrieved 30 January 2023.
  2. 1 2 3 4 5 6 7 8 9 10 "Results for object NGC 0772". NASA/IPAC Extragalactic Database. NASA and Caltech . Retrieved 2006-11-25.
  3. ↑ Stoyan, Ronald; Schurig, Stephan (2014). interstellarum Deep Sky Atlas. Erlangen: Cambridge University Press; Oculum-Verlag GmbH. ISBN   978-1-107-50338-0. OCLC   920437579.
  4. ↑ Seligman, Courtney. "NGC 772". Celestial Atlas. Retrieved 17 August 2024.
  5. ↑ Rhee, M. H.; van Albada, T. S. (February 1996). "Short WSRT HI observations of spiral galaxies". Astronomy and Astrophysics Supplement. 115: 407–437. Bibcode:1996A&AS..115..407R.
  6. ↑ Ho, Luis C.; Filippenko, Alexei V.; Sargent, Wallace L. W. (October 1997). "A Search for "Dwarf" Seyfert Nuclei. III. Spectroscopic Parameters and Properties of the Host Galaxies". Astrophysical Journal Supplement. 112 (2): 315–390. arXiv: astro-ph/9704107 . Bibcode:1997ApJS..112..315H. doi:10.1086/313041. S2CID   17086638.
  7. ↑ Moore, M.; Li, W.; Boles, T. (2003). "Supernovae 2003hg, 2003hh, 2003hi, 2003hj, 2003hk, 2003hl". International Astronomical Union Circular (8184): 2. Bibcode:2003IAUC.8184....2M.
  8. ↑ "SN 2003hl". Transient Name Server. IAU . Retrieved 14 December 2024.
  9. ↑ Yamaoka, H.; Ayani, K. (2003). "Supernovae 2003hl and 2003iq in NGC 772". International Astronomical Union Circular (8219): 2. Bibcode:2003IAUC.8219....2Y.
  10. ↑ "NGC 772, Supernovae 2003hl and 2003iq". www.kopernik.org. Retrieved 2022-04-08.
  11. ↑ "SN 2003iq". Transient Name Server. IAU . Retrieved 14 December 2024.
  12. ↑ Bishop, David. "Supernovae 2003hl and 2003iq in NGC 772". Rochester Astronomy. Retrieved 14 December 2024.
  13. ↑ "SN 2022qze". Transient Name Server. IAU . Retrieved 14 December 2024.
  14. ↑ "A Rival to the Milky Way". ESA Hubble. Retrieved 11 November 2019.
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