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Дата изменения: Fri Nov 19 12:07:06 2010
Дата индексирования: Mon Oct 1 23:22:03 2012
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Поисковые слова: ngc 4676

A Database of Optical Constants of Cosmic Dust Analogs

C.Jaeger^a, V.Il'in^c, Th.Henning^b,a, H.Mutschke^a, D.Fabian^a, D.Semenov^a,c, and N.Voshchinnikov^c

^aAstrophyscial Institute and University Observatory, Friedrich Schiller University, D-07745 Jena, Germany,
^bMax Planck Institute for Astronomy, D-69117 Heidelberg, Germany,
^cAstronomical Institute of St.Petersburg Univeristy, 198504 St.Petersburg, Russia.


To be published in J. Quant. Spectrosc. Rad. Transf. in 2003.

Abstract:

We describe the current state and future of the WWW Jena-Petersburg Database of Optical Constants (JPDOC) that also contains references to papers and links to internet resources related to measurements or calculations of the optical constants of materials of astronomical interest. The most important part of the JPDOC is data measured in broad wavelength ranges and partly at low temperatures in the Jena Laboratory. To demonstrate the use of these data, we show as examples infrared refractive indices of forsterite, spinel, and hydrogenated amorphous carbon (HAC) and calculate the absorption cross-sections of small particles composed of these materials.