Hostname: page-component-848d4c4894-8kt4b Total loading time: 0 Render date: 2024-06-21T00:19:45.736Z Has data issue: false hasContentIssue false
  • English
  • Français

MgII Spectra of Late Type Stars Used to Probe the LISM

Published online by Cambridge University Press:  12 April 2016

J.E. Beckman ,
L. Crivellari ,
M.L. Franco ,
P. Molaro  and
G. Vladilo
J.E. Beckman
Affiliation:
Queen Mary College, Univ. of London, England
L. Crivellari
Affiliation:
Osservatorio Astronomico di Trieste, Italy
M.L. Franco
Affiliation:
I.A.F.E., Buenos Aires, Argentina
P. Molaro
Affiliation:
Osservatorio Astronomico di Trieste, Italy I.S.A.S., Miramare, Trieste, Italy
G. Vladilo
Affiliation:
Osservatorio Astronomico di Trieste, Italy

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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

References

Bruhweiler, F.C.: 1982, “Adv. in UV Astronomy”, NASA CF-2238, p.125.Google Scholar
Crutcher, R.M.: 1982, Astrophys. J. 254, 88.Google Scholar
Molaro, F., Beckman, J.E., Crivellari, L., Franco, M.L. and Vladilo, G.I: 4th European IUE Conference, Rome 1984 (in press).Google Scholar
Paresce, F.: 1984, Astron. J. (in press).Google Scholar
Spitzer, L.: 1968, Diffuse Matter in Space (Interscience), p.19.Google Scholar
Vladilo, G., Beckman, J.E., Crivellari, L., Franco, M.L. and Molaro, F.: 1984, submitted to Astron. Astrophys.Google Scholar