High-Resolution Observations of Highly Ionized Gas Toward the Halo Star HD 119608

Details High-Resolution Observations of Highly Ionized Gas Toward the Halo Star HD 119608 High-Resolution Observations of Highly Ionized Gas Toward the Halo Star HD 119608

Jul 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995hst..prop.6154s&link_type=abstract

HST Proposal ID #6154

Computer Science

Hst Proposal Id #6154 Interstellar Medium

Scientific paper

We will use the echelle mode of the GHRS to obtain high-resolution, high S/N (40-50:1) absorption line observations of the Si IV, C IV, and N V lines toward HD 119608, a halo star at 4.4 kpc in the direction l = 320, b = +43. We will compare the fully resolved high ion profiles to determine which ionization mechanisms give rise to highly ionized gas in the Galactic halo in this direction. In particular, we will search for 1) the narrow structured absorption associated with interface phenomena that gives rise to the ubiquitous N(C IV)/N(Si IV) ~ 3.5 ratio in the Galaxy and 2) a more highly ionized (and presumably hotter) type of gas that we have detected toward the inner Galaxy HD 167756 sight line. The relative fractions of the gas describe in (1) and (2) have implications for the thermal stability, filling fraction of hot gas, and energetics in the Galactic halo.

Affiliated with

Also associated with

No associations

Rating

High-Resolution Observations of Highly Ionized Gas Toward the Halo Star HD 119608 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 High-Resolution Observations of Highly Ionized Gas Toward the Halo Star HD 119608, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-Resolution Observations of Highly Ionized Gas Toward the Halo Star HD 119608 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1171915