Blue Line Asymmetries without Gravitational Collapse

Details Blue Line Asymmetries without Gravitational Collapse Blue Line Asymmetries without Gravitational Collapse

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aas...193.7118l&link_type=abstract

American Astronomical Society, 193rd AAS Meeting, #71.18; Bulletin of the American Astronomical Society, Vol. 30, p.1358

Astronomy and Astrophysics

Astronomy

Scientific paper

Double-peaked optically thick molecular line profiles with a blue asymmetry, combined with single-peaked optically thin lines along the same lines of sight have previously been interpreted in terms of gravitational collapse. We show that it is possible to obtain such profiles using a general velocity field with correlated fluctuations, without requiring gravitational collapse motions. The major assumption is that line excitation increases in regions of convergent flows. A simple model with a fractional Brownian noise velocity field is used as an illustration. We predict how the frequency distribution of line profile skewness should depend on the exponent of the fractional Brownian noise. Comparison with line profiles taken through two-dimensional simulations of driven self-gravitating MHD turbulence will be used to understand the contribution of various physical effects to the predicted shapes of the profiles.

Affiliated with

Also associated with

No associations

Rating

Blue Line Asymmetries without Gravitational Collapse 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 Blue Line Asymmetries without Gravitational Collapse, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Blue Line Asymmetries without Gravitational Collapse will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-995744