A Mushroom-shaped Structure from the Impact of a Cloud with the Galactic Disk

Details A Mushroom-shaped Structure from the Impact of a Cloud with the Galactic Disk A Mushroom-shaped Structure from the Impact of a Cloud with the Galactic Disk

2004-05-08

arxiv.org/abs/astro-ph/0405165v1

Astron.Astrophys. 423 (2004) 183-188

Astronomy and Astrophysics

Astrophysics

6 pages, 5 figures, accepted for publication in A&A, color figures and movies at http://www.astro.uwo.ca/~kudoh/mushroom/

Scientific paper

10.1051/0004-6361:20047141

We propose that the mushroom-shaped structure of the Galactic worm GW 123.4--1.5 is created by a cloud collision with the Galactic gas disk. A hydrodynamic simulation shows that a mushroom-shaped structure is created after the cloud crosses the Galactic midplane. The lifetime of the mushroom-shaped structure is of order the dynamical time scale of the disk, \sim 10^7 years. We find that the velocities across the cap of the mushroom-shaped structure in the simulation are consistent with the observed values. The simulation also predicts a structure on the opposite side of the Galactic plane which is created by the Kelvin-Helmholtz instability after the cloud passes through the disk.

Affiliated with

Also associated with

No associations

Rating

A Mushroom-shaped Structure from the Impact of a Cloud with the Galactic Disk 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 A Mushroom-shaped Structure from the Impact of a Cloud with the Galactic Disk, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Mushroom-shaped Structure from the Impact of a Cloud with the Galactic Disk will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-111689