Depletion in post-AGB stars with a dusty disc. II

Details Depletion in post-AGB stars with a dusty disc. II Depletion in post-AGB stars with a dusty disc. II

2005-01-21

arxiv.org/abs/astro-ph/0501469v1

Astron.Astrophys. 429 (2005) 297

Astronomy and Astrophysics

Astrophysics

20 pages, 22 figures, published in A&A

Scientific paper

10.1051/0004-6361:20041688

We present a chemical abundance analysis on the basis of high signal-to- noise and high resolution spectra for 12 stars of our newly defined sample. The selection criterion for the stars of this sample was their position in the `RV Tauri' box in the [12]-[25], [25]-[60] two-colour diagram. An additional requisite was the presence of a near-IR excess. We found that the photospheres of nine stars are affected by the depletion process. Since the most likely origin of the near-IR excess is a disc, this strongly suggests that the phenomenon of depletion and the presence of a disc are linked. Among the depleted stars we find different depletion patterns. In seven stars elements with a condensation temperature below 1500 K are not or only slightly affected. Large underabundances are measured only for most elements with a condensation temperature above 1500 K.

Affiliated with

Also associated with

No associations

Rating

Depletion in post-AGB stars with a dusty disc. II 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 Depletion in post-AGB stars with a dusty disc. II, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Depletion in post-AGB stars with a dusty disc. II will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-593105