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Observations of Local Interstellar Mg I and Mg II

Published online by Cambridge University Press:  12 April 2016

F. Bruhweiler ,
W. Oegerle ,
E. Weiler ,
R. Stencel  and
Y. Kondo
F. Bruhweiler
Affiliation:
Department of Physics, Catholic University of America
W. Oegerle
Affiliation:
Space Telescope Science Institute
E. Weiler
Affiliation:
NASA Headquarters
R. Stencel
Affiliation:
NASA Headquarters
Y. Kondo
Affiliation:
NASA, Goddard Space Flight Center

Abstract

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We have combined Copernicus and IUE observations of 5 stars within 50 pc of the Sun to study the ionization of magnesium in the local interstellar medium (LISM). The high resolution Copernicus spectrometer was used to detect interstellar Mg I 2852 in the spectra of α Gru, α Eri, and α Lyr, while placing upper limits on Mg I in the spectra of α CMa and α PsA. Observations of Mg II 2795, 2802 for these stars were also obtained with IUE and Copernicus. The column densities of Mg I and Mg II are used to place constraints on the temperature of the LISM.

Information

Type
Ultraviolet and EUV Absorption Studies
Information
International Astronomical Union Colloquium , Volume 81: Local Interstellar Medium , 1984 , pp. 64 - 66
Copyright
Copyright © NASA 1984

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