The Orbit of GG Tau A

Details The Orbit of GG Tau A The Orbit of GG Tau A

2011-04-12

arxiv.org/abs/1104.2245v2

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

5 pages, 6 figures, accepted by Astronomy and Astrophysics, new version contains changes suggested by language editor

Scientific paper

We present a study of the orbit of the pre-main-sequence binary system GG Tau A and its relation to its circumbinary disk, in order to find an explanation for the sharp inner edge of the disk. Three new relative astrometric positions of the binary were obtained with NACO at the VLT. We combine these with data from the literature and fit orbit models to the dataset. We find that an orbit coplanar with the disk and compatible with the astrometric data is too small to explain the inner gap of the disk. On the other hand, orbits large enough to cause the gap are tilted with respect to the disk. If the disk gap is indeed caused by the stellar companion, then the most likely explanation is a combination of underestimated astrometric errors and a misalignment between the planes of the disk and the orbit.

Affiliated with

Also associated with

No associations

Rating

The Orbit of GG Tau A 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 The Orbit of GG Tau A, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Orbit of GG Tau A will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-731088