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Identifying Identical Twin Star Systems from the SDSS Data Release 10

Identifying Identical Twin Star Systems from the SDSS Data Release 10

          
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About the Book

Data mining the SDSS Data Release 10 has yielded a total of 481 pairs of stars separated by between 3 and 30 arc second where all five listed de-reddened magnitudes (u, g, r, i and z bands) for the two stars are within 0.05 magnitudes. 473 of these binary stars are believed to be new discoveries. The SDSS provides photometry in five different wavebands and these results can be used to estimate the spectral energy distribution of the star. It is possible to extrapolate from the SDSS results obtained from previously studied stars to the absolute magnitude, and hence the distance, of previously unstudied stars. An extension of this idea of photometric parallax is the idea, presented for the first time in this paper, that if two stars have, essentially, identical re-reddened photometry in all five SDSS wavebands then they must be at the same distance, especially if the angular separation between them is less than 30 arc seconds.
About the Author: Martin Nicholson (born 1954) was educated at St Albans School in Hertfordshire and then at Nottingham University. After a brief spell working in the food industry Martin became a college lecturer initially based in Somerset and later in Northamptonshire before retiring from the post as Director of Information Technology at Guilsborough School in 2005. Although he had a successful career as a teacher he is probably best known for the 25 years+ he served as a school governor and for the extensive work he carried out in the fields of amateur astronomy and in the twin disciplines of stamp collecting and postal history. Martin was one of the first amateur astronomers to see the potential of data mining and it is testimony to his determination that what was initially regarded with great scepticism by the astronomical establishment has now become standard practice for most serious enthusiasts. He is the discoverer of over 1,000 previously unknown double stars and variable stars that now appear in the standard catalogues.


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Product Details
  • ISBN-13: 9781496107206
  • Publisher: Createspace Independent Publishing Platform
  • Publisher Imprint: Createspace Independent Publishing Platform
  • Height: 280 mm
  • No of Pages: 36
  • Series Title: Research Topics for Amateur Astronomers
  • Weight: 109 gr
  • ISBN-10: 1496107209
  • Publisher Date: 28 Feb 2014
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Spine Width: 2 mm
  • Width: 216 mm


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