Probing the Disk-Halo Connection Through the Local Interstellar Chimney

Details Probing the Disk-Halo Connection Through the Local Interstellar Chimney Probing the Disk-Halo Connection Through the Local Interstellar Chimney

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004assl..315..369w&link_type=abstract

How Does the Galaxy Work? A Galactic Tertulia with Don Cox and Ron Reynolds. Edited by Emilio J. Alfaro, Instituto de Astrofisic

Astronomy and Astrophysics

Astrophysics

Scientific paper

We present preliminary results from mapping the visible and far UV absorption characteristics of interstellar gas with a z-height of ˜ 400pc situated in the Local Interstellar Chimney. This feature is an extension of the rarefied Local Bubble cavity that reaches out into the inner-halo region. Our results indicate that there is very little dense and neutral gas to a z-height of ˜ 250pc. Beyond this height we start to detect neutral gas with a velocity of ˜ -55 km s-1 which we associate with the Intermediate Velocity Arch feature. We tentatively suggest that the presence of these IV clouds in the sight-line of the Local Chimney may be linked to the formation of the LocalBubble througha galactic fountain similar that seen in the W4 superbubble.

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