Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-04-20
Astronomy and Astrophysics
Astrophysics
9 pages, 11 figures. Accepted for publication in A&A
Scientific paper
10.1051/0004-6361:20077137
Our objective is to study the vertical dust distribution in the circumbinary ring of the binary system GG Tau and to search for evidence of stratification, one of the first steps expected to occur during planet formation. We present a simultaneous analysis of four scattered light images spanning a range of wavelength from 800 nm to 3800 nm and compare them with (i) a parametric prescription for the vertical dust stratification, and (ii) with the results of SPH bi-fluid hydrodynamic calculations. The parametric prescription and hydrodynamical calculations of stratification both reproduce the observed brightness profiles well. These models also provide a correct match for the observed star/ring integrated flux ratio. Another solution with a well-mixed, but ``exotic'', dust size distribution also matches the brightness profile ratios but fails to match the star/ring flux ratio. These results give support to the presence of vertical stratification of the dust in the ring of GG Tau and further predict the presence of a radial stratification also.
Duchene Gaspard
Fouchet Laure
González Javier Francisco
Menard Franccois
Pinte Christophe
No associations
LandOfFree
On the stratified dust distribution of the GG Tau circumbinary ring 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 On the stratified dust distribution of the GG Tau circumbinary ring, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the stratified dust distribution of the GG Tau circumbinary ring will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-573898