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portada Identifying Identical Twin Star Systems from the SDSS Data Release 10
Type
Physical Book
Author
Publisher
Language
English
Pages
36
Format
Paperback
Dimensions
27.9x21.6x0.2 cm
Weight
0.11 kg.
ISBN13
9781496107206
Categories

Identifying Identical Twin Star Systems from the SDSS Data Release 10

Martin Piers Nicholson (Author) · Createspace · Paperback

Identifying Identical Twin Star Systems from the SDSS Data Release 10 - Nicholson, Martin Piers

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R 377
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Synopsis "Identifying Identical Twin Star Systems from the SDSS Data Release 10"

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.

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