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MgII Spectra of Late Type Stars Used to Probe the LISM
Published online by Cambridge University Press: 12 April 2016
Abstract
IUE spectra of Mg II h and k in late type dwarfs and giants have been used to detect and measure absorption components due to the LISM. This technique gives a method of probing the awkward range from d = 3 pc to d = 80 pc from the sun . In spite of interpretational uncertainties we can plot the HI component of the LISM well enough to confirm it as a cloud some 20-30 pc in extent, peaking sharply in density towards , moving towards the sun from , at 28 Km/sec. The “hole” towards is confirmed, suggesting a solar position close to the cloud's edge in this direction.
- Type
- Ultraviolet and EUV Absorption Studies
- Information
- International Astronomical Union Colloquium , Volume 81: Local Interstellar Medium , 1984 , pp. 67 - 70
- Copyright
- Copyright © NASA 1984
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