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NGC 3532

Coordinates:Sky map11h 05m 12s, −58° 44′ 1″
From Wikipedia, the free encyclopedia
(Redirected fromCaldwell 91)
Open cluster in the constellation Carina
NGC 3532
Observation data (J2000epoch)
Right ascension11h 05m 33s[1]
Declination−58° 43.8′[1]
Distance1,321[2]ly (405pc)
Physical characteristics
Other designationsNGC 3532,[1]Caldwell 91,Cr 238,Mel 103,C 1104-584,Cl* 1104-584,CL 1104-584, Lacaille II.10,[3] Football Cluster, Wishing Well Cluster[4][5][6][7]
Associations
ConstellationCarina
See also:Open cluster,List of open clusters

NGC 3532 (Caldwell 91),[8] also commonly known as thePincushion Cluster,[9][10][11][8]Football Cluster,[12][13] theBlack Arrow Cluster,[14] or theWishing Well Cluster,[4][5][6][7] is anopen cluster some 405parsecs fromEarth[2] in theconstellationCarina. Its population of approximately 150stars of 7thmagnitude or fainter includes sevenred giants[15] and sevenwhite dwarfs.[16][17] On 20 May 1990 it became thefirst target ever observed by theHubble Space Telescope. A line fromBeta Crucis throughDelta Crucis passes somewhat to the north of NGC 3532. The cluster lies between the constellationCrux and the larger but fainter "False Cross"asterism. The 4th-magnitudeCepheid variable star x Carinae (V382 Car) appears near the southeast fringes, but it lies between theSun and the cluster and is not a member of the cluster.

The cluster was first catalogued byNicolas Louis de Lacaille in 1752.[18] It was admired byJohn Herschel, who thought it one of the finest star clusters in the sky,[3][19] with manydouble stars (binary stars).[20]

Gallery

[edit]
Photos of NGC 3532 by space telescopes

References

[edit]
  1. ^abc"NGC 3532".SIMBAD.Centre de données astronomiques de Strasbourg. Retrieved2010-05-23.
  2. ^abRobichon, N.; et al. (2005). "Open clusters with Hipparcos. I. Mean astrometric parameters".Astronomy and Astrophysics.345:471–484.arXiv:astro-ph/9903131.Bibcode:1999A&A...345..471R.
  3. ^abDeep Sky Observer's Companion – the online database,DOCdb Lacaille II.10
  4. ^abNemiroff, R.; Bonnell, J., eds. (26 February 2010)."Chasing Carina".Astronomy Picture of the Day.NASA. Retrieved17 April 2016.
  5. ^abHook, Richard (26 November 2014)."A Colourful Gathering of Middle-aged Stars".European Southern Observatory.ESO. Retrieved17 April 2016.
  6. ^abKramer, Miriam (26 November 2014)."Wishing Well Star Cluster Sparkles in Colorful New Views".Space.com. Retrieved17 April 2016.
  7. ^abFrommert, Hartmut; Kronberg, Christine (23 June 2006)."NGC 3532".SEDS Messier Database. SEDS. Retrieved17 April 2016.
  8. ^abMartin Mobberley (Oct 2009).The Caldwell Objects and How to Observe Them. Springer. p. 190.ISBN 978-1-4419-0326-6.
  9. ^Stephen James O'Meara,The Caldwell Objects, Cambridge University Press,ISBN 0-521-82796-5, p. 358–360.
  10. ^Mike Inglis (July 2013).Observer's Guide to Star Clusters.Springer. p. 55.Bibcode:2013ogsc.book.....I.ISBN 978-1-4614-7567-5.
  11. ^Michael E. Bakich (July 2010).1,001 Celestial Wonders to See Before You Die. Springer. p. 80.Bibcode:2010ocws.book.....B.ISBN 978-1-4419-1777-5.
  12. ^Amateur Astronomer Association of New York,Nebula of the Month – Carina's Football
  13. ^IceInSpace - Australian Amateur Astronomy,Challenge Objects – June 2005, 2005
  14. ^Chadwick, S; Cooper, I (11 December 2012).Imaging the Southern Sky. New York: Springer. p. 94.ISBN 978-1461447498.
  15. ^Claria, J.J., Lapasset, E., (1988) "A UBV and DDO astrophysical study of the open cluster NGC3532",Monthly Notices of the Royal Astronomical Society, 235, 1129–1139
  16. ^Reimers, D., Koester, D., (1989) "Spectroscopic identification of white dwarfs in galactic clusters. V – NGC 3532", Astronomy & Astrophysics, 218, 118–122
  17. ^Dobbie, P., Day-Jones, A., Williams, K., Casewell, S., Burleigh, M., Lodieu, N., Parker, Q., Baxter, R. (2012) "Further investigation of white dwarfs in the open clusters NGC2287 and NGC3532", Monthly Notices of the Royal Astronomical Society, 423, 2815–2828
  18. ^Jones, K. G. (March 1969). "The search for the nebulae – VI".Journal of the British Astronomical Association.79:213–222.Bibcode:1969JBAA...79..213J.
  19. ^Herschel, J. (1847).Results of Astronomical Observations Made During the Years 1834, 5, 6, 7, 8, at the Cape of Good Hope. London, Smith, Elder &Co.
  20. ^ScienceDaily,"A colorful gathering of middle-aged stars", European Southern Observatory, 26 November 2014
  21. ^abFirst Image Taken by Hubble's Wide Field Planetary Camera,Hubblesite.org
  22. ^"Great Exploration Revisited: New Horizons at Pluto and Charon".

External links

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Wikimedia Commons has media related toNGC 3532.
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Exoplanets
Star
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