Absorption Line Studies of Milky Way Halo Gas

Details Absorption Line Studies of Milky Way Halo Gas Absorption Line Studies of Milky Way Halo Gas

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...200.3311h&link_type=abstract

American Astronomical Society, 200th AAS Meeting, #33.11; Bulletin of the American Astronomical Society, Vol. 34, p.689

Astronomy and Astrophysics

Astronomy

Scientific paper

The Milky Way is enveloped in a highly-ionized interstellar "halo." Absorption line studies of this gas help us understand its distribution, kinematics, and physical conditions, which in turn constrain models of the global evolution of the interstellar medium in our Galaxy. In particular, recent FUSE studies of interstellar O VI, which traces hot, collisionally ionized gas in galactic environments,have elucidated the distribution of such gas in the low halo, or interstellar "thick disk," as well as providing evidence for a more extended Galactic "corona." I will review the current observational picture (both small scale and global) of the gaseous Milky Way halo, with particular emphasis on the contributions of FUSE to our understanding of this material.

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