Inferring the dynamics of stellar streams via distance gradients

Details Inferring the dynamics of stellar streams via distance gradients Inferring the dynamics of stellar streams via distance gradients

2009-08-20

arxiv.org/abs/0908.2931v2

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

4 pages, 3 figures; MNRAS Letters in press; updated to match accepted version

Scientific paper

We present a simple result in which the distance gradient along a stream can be used to derive the transverse velocity (i.e. proper motion) along it, if the line-of-sight velocity is also known. We show its application to a mock orbit to illustrate its validity and usage. For less extended objects, such as globular clusters and satellite galaxies being tidally disrupted, the same result can be applied in its small-angle approximation. The procedure does not rely on energy or angular momentum conservation and hence does not require a Galactic model in order to deduce the local velocity vector of the stream.

Affiliated with

Also associated with

No associations

Rating

Inferring the dynamics of stellar streams via distance gradients 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 Inferring the dynamics of stellar streams via distance gradients, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inferring the dynamics of stellar streams via distance gradients will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-526824