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Ultra-High Resolution Ca II Observations of the LISM

Published online by Cambridge University Press:  12 April 2016

Barry Y. Welsh ,
Rosine Lallement  and
Ian Crawford
Barry Y. Welsh
Affiliation:
Eureka Scientific, Oakland, CA 94602, USA
Rosine Lallement
Affiliation:
Service d’Aeronomie du CNRS, Verrieres le Buisson, France
Ian Crawford
Affiliation:
University College London, London WC1E 6BT, England

Abstract

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We report on the status of a long-term program of mapping the velocity structure of the local ISM using ultra-high resolution observations of Call K-line absorption towards nearby B and A-type stars. Absorption components common to the local interstellar cloud (LIC) have been detected in many (but not all) lines-of-sight. Our preliminary results indicate that the local ISM has a complex velocity pattern of inhomogeneous absorption, indicative of a shocked filamentary nature.

Type
Part II UV and Soft X-ray Observations of the LISM
Information
International Astronomical Union Colloquium , Volume 166: The Local Bubble and Beyond , 1997 , pp. 37 - 40
Copyright
Copyright © Springer-Verlag 1998

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