NGC 1313 explained

NGC 1313
Epoch:J2000.0
Constellation Name:Reticulum
Ra: [1]
Z:0.001568
Dist Ly:12.886 Mly
Type:SB(s)d
Size V:9.1 x 7.1 arcmin
Names:Topsy Turvy Galaxy, PGC 12286, ESO 082- G 011

NGC 1313 (also known as the Topsy Turvy Galaxy[2]) is a field galaxy[3] and a irregular galaxy[4] discovered by the Scottish astronomer James Dunlop on 27 September 1826.[5] It has a diameter of about 50,000 light-years, or about half the size of the Milky Way.[6]

NGC 1313 lies within the Virgo Supercluster.[7]

In 2007, a rare WO star was discovered in NGC 1313,[8] currently known by its only designation of [HC2007] 31. It is of spectral type WO3. The derived absolute magnitude is about -5, which is very high for a single WO star. (WOs usually have absolute magnitudes of about -1 to -4) This means that the WO is likely part of a binary or a small stellar association.

Two supernovae have been observed in NGC 2841: SN 1962M (type II, mag. 11.7),[9] and SN 1978K (type II, mag. 16).[10]

Features

NGC 1313 has a strikingly uneven shape and its axis of rotation is not exactly in its centre.[11] NGC 1313 also shows strong starburst activity[12] and associated supershells.[13] NGC 1313 is dominated by scattered patches of intense star formation, which gives the galaxy a rather ragged appearance.[14] The uneven shape, the ragged appearance and the strong starburst can all be explained by a galactic collision in the past.[15] However, NGC 1313 seems to be an isolated galaxy and has no direct neighbours. Therefore, it is not clear whether it has swallowed a small companion in its past.

Young, blue stars are scattered across the galaxy.[16] This is evidence of infant mortality in which the young open clusters quickly became gravitationally "unglued", scattering their resident stars into the galaxy.[17] The galaxy bears some resemblance to the Magellanic Clouds[18] and hosts two ultraluminous X-ray sources, called NGC 1313 X-1 and X-2.[19] The former is a rare intermediate-mass black hole.[20] [21]

Notes and References

  1. Web site: NASA/IPAC Extragalactic Database . Results for NGC 1313 . 17 May 2023.
  2. Web site: The Topsy-Turvy Galaxy NGC 1313 . . 23 November 2006 .
  3. Web site: Taking a narrow view of lopsided galaxy . . 21 May 2010 . 22 February 2016 . https://web.archive.org/web/20150612003714/http://cseligman.com/text/atlas/ngc13.htm#1313 . 12 June 2015 . dead .
  4. The Star Clusters of NGC 1313 . 7 August 2009 .
  5. Web site: Courtney Seligman . Celestial Atlas . NGC 1313 (= PGC 12286) . 2016-02-22 . https://web.archive.org/web/20150612003714/http://cseligman.com/text/atlas/ngc13.htm#1313 . 2015-06-12 . dead .
  6. Unusual Starburst Galaxy NGC 1313 . 30 March 2010 .
  7. Web site: Nearby Groups of Galaxies. ned.ipac.caltech.edu. 2018-05-07.
  8. Hadfield. L. J.. Crowther. P. A.. 2007-10-01. A survey of the Wolf-Rayet population of the barred, spiral galaxy NGC 1313. Monthly Notices of the Royal Astronomical Society. 381. 1 . 418–432. 10.1111/j.1365-2966.2007.12284.x. 0708.2039 . 2007MNRAS.381..418H . 3024190 . 0035-8711.
  9. https://www.wis-tns.org/object/1962M Transient Name Server entry for SN 1962M.
  10. https://www.wis-tns.org/object/1957A Transient Name Server entry for SN 1957A.
  11. The structure of nearby groups of galaxies - Quantitative membership probabilities . Materne, J. . April 1979 . Astronomy and Astrophysics . 74 . 2 . 235–243 . 1979A&A....74..235M .
  12. Web site: VLT Image of Starburst Galaxy NGC 1313 . . 23 November 2006 . 22 February 2016 .
  13. Suzuki . etal . AKARI view of star formation in NGC 1313 . Astronomy & Astrophysics . 554 . 2013 . 10.1051/0004-6361/201220294 . 2013A&A...554A...8S . A8. free .
  14. Web site: NGC 1313 . Astrosurf . 22 October 2006 .
  15. Web site: Tumult in NGC 1313 . Wissenschaft.de . de . 28 November 2006 .
  16. Web site: Hubble Sees Star Cluster "Infant Mortality" . NASA . 10 January 2007 . 23 February 2016 .
  17. Anne Pellerin . Martin Meyer . Jason Harris. Daniela Calzetti . Daniela Calzetti . Stellar Clusters in NGC 1313: Evidence of Infant Mortality . The Astrophysical Journal . 653 . 2 . L87–L90 . 10.1086/515437 . 2007ApJ...658L..87P . astro-ph/0702547 . 2007 . 5537525 .
  18. Mercedes . Mollá . Jean-René . Roy . Modeling the Radial Abundance Distribution of the Transition Galaxy NGC 1313 . The Astrophysical Journal . 514 . 2 . 781–786 . 1 April 1999 . 10.1086/306982 . astro-ph/9903129 . 1999ApJ...514..781M . 18874798 .
  19. Matteo Bachetti . etal . The Ultraluminous X-Ray Sources NGC 1313 X-1 and X-2: A Broadband Study with NuSTAR and XMM-Newton . The Astrophysical Journal . 778 . 2 . 10.1088/0004-637X/778/2/163 . 1310.0745 . 2013ApJ...778..163B . 163. 2013 . 28161179 .
  20. Dheeraj Pasham . etal . Evidence for High-Frequency QPOs with a 3:2 Frequency Ratio from a 5000 Solar Mass Black Hole . The Astrophysical Journal . 811 . 1 . 10.1088/2041-8205/811/1/L11 . 1601.02628 . 2015 . 2015ApJ...811L..11P . L11. 33907571 .
  21. Web site: Intermediate-Mass Black Hole 5,000 Times Mass of Sun . Sci-News.com . 23 September 2015 . 23 February 2016 .

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "NGC 1313".

Except where otherwise indicated, Everything.Explained.Today is © Copyright 2009-2024, A B Cryer, All Rights Reserved. Cookie policy.