Observations of local interstellar Mg I and Mg II

Technical Report · Thu Nov 01 04:00:00 EST 1984

OSTI ID:5774701

Bruhweiler, F C; Oegerle, W; Weiler, E; Stencel, R; Kondo, Y

Copernicus and IUE observations of 5 stars within 50 pc of the Sun were combined 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 alpha Gru, alpha Eri, and alpha Lyr, while placing upper limits on Mg I in the spectra of alpha CMa and alpha 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.

• Research Organization: National Aeronautics and Space Administration, Greenbelt, MD (USA). Goddard Space Flight Center
• OSTI ID: 5774701
• Report Number(s): N-85-15547
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALKALINE EARTH METALS
CHARGED PARTICLES
ELEMENTS
INTERSTELLAR SPACE
IONIC COMPOSITION
IONS
MAGNESIUM
MEASURING INSTRUMENTS
METALS
SPACE
SPECTRA
SPECTROMETERS
TEMPERATURE MEASUREMENT
ULTRAVIOLET SPECTRA