Understanding the Warm Ionized Medium of the Galactic Halo

Details Understanding the Warm Ionized Medium of the Galactic Halo Understanding the Warm Ionized Medium of the Galactic Halo

Jul 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001hst..prop.9150h&link_type=abstract

HST Proposal ID #9150

Other

Hst Proposal Id #9150 Ism And Circumstellar Matter

Scientific paper

We propose to obtain STIS observations of the post-AGB star von Zeipel 1128 {l = 42.5; b=+78.7; z=9.5 kpc} in the globular cluster M 3, which will be used to study the warm ionized medium {WIM} of the Galactic halo. The proposed observations, together with FUSE data, will cover key diagnostics of the warm ionized medium, namely S III, Al III, and Fe III. We will use the proposed observations to study the interactions and energy exchange between the WIM, the warm neutral medium, and the hot ionized medium along this sightline. We will do this by determining the relative dust content of the warm ionized and neutral media, by producing a census of and determining the relative ionization states of each phase along the sightline, and by investigating the relative kinematics of each of the three phases. The observations will provide the highest quality dataset yet available for studying the global connections between the warm ionized, hot ionized, and warm neutral phases of the Galactic halo. They will be a critical link between the extensive database of emission line observations of the WIM and absorption line studies of the other phases of the ISM. A by- product of this work will be a set of high-quality gas-phase abundances for the integrated Galactic halo; the relative abundances {e.g., Zn/Cr, Zn/Fe} for this sightline will be important for comparison with the high-redshift damped Lyman- Alpha absorbers.

Affiliated with

Also associated with

No associations

Rating

Understanding the Warm Ionized Medium of the Galactic Halo does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Understanding the Warm Ionized Medium of the Galactic Halo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Understanding the Warm Ionized Medium of the Galactic Halo will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1200596