Interstellar Silicon Abundance

• Autorzy: Gnaciński P.
• Języki publikacji: EN

Abstrakty

EN

We present 34 measurements of silicon gas phase column densities in the interstellar medium. We have used spectra containing the Si II 1808 Å line which were obtained with the Goddard High Resolution Spectrograph (GHRS) aboard the Hubble Space Telescope (HST). Extinction curve parameters are determined for analyzed lines of sight and relation between Si/H ratio and extinction parameters is discussed. We find the abundance of gas phase silicon in diffuse clouds to be lower than the solar value by a factor of four.

Słowa kluczowe

EN

ISM: abundances; ISM: dust; ISM: extinction; ultraviolet: ISM

• Wydawca: Copernicus Foundation for Polish Astronomy
• Czasopismo: Acta Astronomica
• Rocznik: 2003
• Tom: Vol. 56, No. 4
• Strony: 379--390
• Opis fizyczny: Bibliogr. 24 poz., tab., wykr.

Twórcy

autor

Gnaciński P.

• Institute of Theoretical Physics and Astrophysics, University of Gdańsk, ul. Wita Stwosza 57, 80-952 Gdańsk, Poland

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