A mid-infrared imaging catalogue of post-AGB stars

Astronomy and Astrophysics – Astrophysics – Solar and Stellar Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0


63 pages, 40 figures and 9 tables, accepted for publication in MNRAS. Images will be made available to the whole community via

Scientific paper

Post-AGB stars are key objects for the study of the dramatic morphological changes of low- to intermediate-mass stars on their evolution from the Asymptotic Giant Branch (AGB) towards the Planetary Nebula stage. There is growing evidences that binary interaction processes may very well have a determining role in the shaping process of many objects, but so far direct evidence is still weak. We aim at a systematic study of the dust distribution around a large sample of Post-AGB stars as a probe of the symmetry breaking in the nebulae around these systems. We used imaging in the mid-infrared to study the inner part of these evolved stars to probe direct emission from dusty structures in the core of Post-AGB stars in order to better understand their shaping mechanisms. We imaged a sample of 93 evolved stars and nebulae in the mid-infrared using VISIR/VLT, T-Recs/Gemini South and Michelle/Gemini North. We found that all the the Proto-Planetary Nebulae we resolved show a clear departure from spherical symmetry. 59 out of the 93 observed targets appear to be non resolved. The resolved targets can be divided in two categories. The nebulae with a dense central core, that are either bipolar and multipolar. The nebulae with no central core have an elliptical morphology.The dense central torus observed likely host binary systems which triggered fast outflows that shaped the nebulae.

No associations


Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.


A mid-infrared imaging catalogue of post-AGB stars 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 A mid-infrared imaging catalogue of post-AGB stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A mid-infrared imaging catalogue of post-AGB stars will most certainly appreciate the feedback.

Rate now


Profile ID: LFWR-SCP-O-559879

All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.