Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002apj...575..194e&link_type=abstract
The Astrophysical Journal, Volume 575, Issue 1, pp. 194-200.
Astronomy and Astrophysics
Astronomy
6
Galaxy: Halo, Ism: Clouds, Ism: General, Ism: Structure
Scientific paper
We construct a simplified pressure equilibrium model for the confinement of high-velocity clouds (HVCs) in the Galactic halo of the Milky Way. The ambient pressure is obtained from a model for the distribution of the coronal gas density. This is assumed as an isothermal plasma in hydrostatic equilibrium with the gravitational field of the Galaxy. The cloud internal pressure, for either subsonic or supersonic HVCs, is expressed in terms of its observed parameters and as a function of distance from the Sun. The distances to three HVCs in complex M, observationally determined by Danly and coworkers in 1993, are used to set the values of the two free parameters of the model, namely, the thermal pressure of the coronal gas in the solar vicinity (~4×10-13 dyn cm-2) and its temperature Tg~106 K. This model can be more rigorously tested when a set of cloud distances, velocities, velocity dispersion, column densities, and angular sizes becomes available.
Cantó Jorge
Espresate Julia
Franco Jose
No associations
LandOfFree
High-Velocity Clouds as a Probe of the Global Structure of the Gaseous 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 High-Velocity Clouds as a Probe of the Global Structure of the Gaseous Galactic Halo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-Velocity Clouds as a Probe of the Global Structure of the Gaseous Galactic Halo will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1675433