NGC 2336

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NGC 2336
NGC 2336.png
NGC 2336 by Hubble Space Telescope.
Observation data (J2000 epoch)
Constellation Camelopardalis
Right ascension 07h 27m 04.1s [1]
Declination +80° 10′ 41″ [1]
Redshift 0.007352 +/- 0.000003 [1]
Helio radial velocity 2204 ± 1 km/s [1]
Distance 90.7 ± 28 Mly (27.8 ± 8.6 Mpc) [1]
Apparent magnitude  (V)10.3
Characteristics
Type SAB(r)bc [1]
Apparent size  (V)7.1′ × 3.9′ [1]
Other designations
UGC 3809, MCG +13-06-006, PGC 21033 [1]

NGC 2336 is a Barred spiral galaxy located in the constellation Camelopardalis. It is located at a distance of circa 100 million light years from Earth, which, given its apparent dimensions, means that NGC 2336 is about 200,000 light years across. It was discovered by Wilhelm Tempel in 1876. [2]

Contents

Characteristics

NGC 2336 is a barred spiral galaxy, featuring a small optical bar. [3] At least 8 spiral arms, with numerous HII regions, [4] emanate from the ring-like structure around the bar. This ring has a radius of approximately 34 arcseconds, which corresponds to 5.3 kpc at the distance of NGC 2336. [5]

In the large arms of the galaxy have been observed 28 HII regions that may host young massive star clusters, and for two of them the nebular emission comprises most of the flux. Three of these HII areas have ages calculated to be 100 to 300 million years and have sizes between 300 and 600 parsecs. It is suggested they are star complexes that may coexist with younger ones. The most massive of the HII regions, number 13, has a mass estimated to be (550±169)×104 M☉ and is 2,600  ly (810  pc ) across. [6] Observations in the ultraviolet showed 78 star forming regions, with two of them between the spiral arms and six at the galaxy ring. Their size is comparable to NGC 604, one of the largest nebulae in the Local Group. Star formation is more intense in the inner parts of the arms and at the ring. [7]

Scattered dust lanes which do not fit into a spiral structure have been observed in the nuclear region of the galaxy. [8] No emission has been detected in the radiowaves [3] and HI and Ha imaging of the nucleus of NGC 2336. [9] The nucleus is small, with an apparent diameter of 5 arcseconds, while the bulge is large, with a radius of 17 arcseconds. [5] In the centre of NGC 2336 lies a supermassive black hole whose mass is estimated to be 30 million (107.5) M☉ based on Ks bulge luminosity. [10]

Supernova

One supernova has been observed in NGC 2336, SN 1987L. It was discovered on 16 August 1987 at mag. 14.2 by American amateur astronomer James Dana Patchick. He used a home built 17.5" Dobsonian reflecting telescope for the visual discovery. [11] [12] The supernova was found as part of a team effort known as 'SUNSEARCH', started by Steve H. Lucas. [13] Spectrography performed by William Herschel Telescope on 20–21 October 1987 concluded that it was a type Ia supernova with its maximum approximately 100 days before. [14]

Nearby galaxies

NGC 2336 is the foremost galaxy of a small galaxy group known as the NGC 2336 group. [15] It forms a non-interacting pair with IC 467, which lies 20 arcminutes away. [16]

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<span class="mw-page-title-main">Messier 95</span> Galaxy in the constellation Leo

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<span class="mw-page-title-main">Messier 108</span> Galaxy in the constellation Ursa Major

Messier 108 is a barred spiral galaxy about 28 million light-years away from Earth in the northern constellation Ursa Major. It was discovered by Pierre Méchain in 1781 or 1782. From the Earth, this galaxy is seen almost edge-on.

<span class="mw-page-title-main">NGC 6946</span> Galaxy in the constellations Cepheus & Cygnus

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<span class="mw-page-title-main">NGC 4725</span> Galaxy in the constellation Coma Berenices

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NGC 1566, sometimes known as the Spanish Dancer, is an intermediate spiral galaxy in the constellation Dorado, positioned about 3.5° to the south of the star Gamma Doradus. It was discovered on May 28, 1826 by Scottish astronomer James Dunlop. At 10th magnitude, it requires a telescope to view. The distance to this galaxy remains elusive, with measurements ranging from 6 Mpc up to 21 Mpc.

<span class="mw-page-title-main">NGC 4639</span> Galaxy in the constellation Virgo

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<span class="mw-page-title-main">NGC 5584</span> Galaxy in the constellation Virgo

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<span class="mw-page-title-main">NGC 6384</span> Galaxy in the constellation of Ophiucus

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<span class="mw-page-title-main">NGC 1614</span> Galaxy in the constellation Eridanus

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<span class="mw-page-title-main">NGC 7552</span> Galaxy in the constellation Grus

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<span class="mw-page-title-main">NGC 4699</span> Spiral galaxy in the constellation Virgo

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<span class="mw-page-title-main">NGC 7723</span> Galaxy in the constellation Aquarius

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<span class="mw-page-title-main">NGC 7184</span> Galaxy in the constellation Aquarius

NGC 7184 is a barred spiral galaxy located in the constellation Aquarius. It is located at a distance of circa 100 million light years from Earth, which, given its apparent dimensions, means that NGC 7184 is about 175,000 light years across. It was discovered by William Herschel on October 28, 1783.

<span class="mw-page-title-main">NGC 3367</span> Spiral galaxy in the constellation Leo

NGC 3367 is a barred spiral galaxy located in the constellation Leo. It is located at a distance of about 120 million light years from Earth, which, given its apparent dimensions, means that NGC 3367 is about 85,000 light years across. It was discovered by William Herschel on March 19, 1784.

<span class="mw-page-title-main">IC 5201</span> Barred spiral galaxy in the constellation of Grus

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References

  1. 1 2 3 4 5 6 7 8 "NASA/IPAC Extragalactic Database". Results for NGC 2336. Retrieved 2016-01-18.
  2. ↑ Seligman, Courtney. "NGC 2336". Celestial Atlas. Retrieved 19 November 2018.
  3. 1 2 Beck, R.; Shoutenkov, V.; Ehle, M.; Harnett, J. I.; Haynes, R. F.; Shukurov, A.; Sokoloff, D. D.; Thierbach, M. (29 July 2002). "Magnetic fields in barred galaxies". Astronomy & Astrophysics. 391 (1): 83–102. arXiv: astro-ph/0107214 . Bibcode:2002A&A...391...83B. doi:10.1051/0004-6361:20020642. S2CID   14749261.
  4. ↑ Sandage, A., Bedke, J. (1994), The Carnegie Atlas of Galaxies. Volume I, Carnegie Institution of Washington, p. 15
  5. 1 2 Gusev, A. S.; M.–G. Park (17 November 2003). "Structure and stellar population of ringed barred galaxy NGC 2336". Astronomy & Astrophysics. 410 (1): 117–129. Bibcode:2003A&A...410..117G. doi: 10.1051/0004-6361:20031215 .
  6. ↑ Gusev, A. S.; Sakhibov, F.; Piskunov, A. E.; Kharchenko, N. V.; Bruevich, V. V.; Ezhkova, O. V.; Guslyakova, S. A.; Lang, V.; Shimanovskaya, E. V.; Efremov, Y. N. (11 April 2016). "A spectral and photometric study of 102 star-forming regions in seven spiral galaxies". Monthly Notices of the Royal Astronomical Society. 457 (3): 3334–3355. arXiv: 1601.07470 . Bibcode:2016MNRAS.457.3334G. doi:10.1093/mnras/stw212. S2CID   118736701.
  7. ↑ Rahna, P T; Das, M; Murthy, Jayant; Gudennavar, S B; Bubbly, S G (17 August 2018). "A study of the star forming regions in the spiral galaxy NGC 2336 using the Ultraviolet Imaging Telescope (UVIT)". Monthly Notices of the Royal Astronomical Society. 481 (1): 1212. arXiv: 1803.00506 . Bibcode:2018MNRAS.481.1212R. doi:10.1093/mnras/sty2250. S2CID   118843858.
  8. ↑ Martini, Paul; Regan, Michael W.; Mulchaey, John S.; Pogge, Richard W. (June 2003). "Circumnuclear Dust in Nearby Active and Inactive Galaxies. I. Data". The Astrophysical Journal Supplement Series. 146 (2): 353–406. arXiv: astro-ph/0212396 . Bibcode:2003ApJS..146..353M. doi:10.1086/367817. S2CID   15161097.
  9. ↑ Garrido, O.; Marcelin, M.; Amram, P. (21 March 2004). "GHASP: an Hα kinematic survey of spiral and irregular galaxies – III. 15 new velocity fields and study of 46 rotation curves". Monthly Notices of the Royal Astronomical Society. 349 (1): 225–239. Bibcode:2004MNRAS.349..225G. doi: 10.1111/j.1365-2966.2004.07483.x .
  10. ↑ Dong, X. Y.; De Robertis, M. M. (March 2006). "Low-Luminosity Active Galaxies and Their Central Black Holes". The Astronomical Journal. 131 (3): 1236–1252. arXiv: astro-ph/0510694 . Bibcode:2006AJ....131.1236D. doi:10.1086/499334. S2CID   17630682.
  11. ↑ Astronomy Magazine, June 1988, pg. 62-63
  12. ↑ "IAUC 4441: 1987L; 1987u; 1987 OA". www.cbat.eps.harvard.edu. Retrieved 2021-04-07.
  13. ↑ "Biographies". www.physics.purdue.edu. Retrieved 2021-04-08.
  14. ↑ Pearce, Gillian; Patchett, Bruce; Allington-Smith, Jeremy; Parry, Ian (1988). "Observations of the supernova SN1987L with the new Faint Object Spectrograph on the 4.2 m William Herschel Telescope". Astrophysics and Space Science. 150 (2): 267–271. doi:10.1007/BF00641721. S2CID   121470638.
  15. ↑ Makarov, Dmitry; Karachentsev, Igor (21 April 2011). "Galaxy groups and clouds in the local (z~ 0.01) Universe". Monthly Notices of the Royal Astronomical Society. 412 (4): 2498–2520. arXiv: 1011.6277 . Bibcode:2011MNRAS.412.2498M. doi:10.1111/j.1365-2966.2010.18071.x. S2CID   119194025. Archived from the original on 31 January 2016. Retrieved 26 November 2018.
  16. ↑ de Vaucouleurs, G.; de Vaucouleurs, A.; Corwin, J. R. (1976). "Second reference catalogue of bright galaxies". Second Reference Catalogue of Bright Galaxies. 1976. Bibcode:1976RC2...C......0D.
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