The final evolutionary stages of stars are largely determined by ejection of mass fromthe stellar envelope. The mechanisms at work are thought to be understood in broadterms, but several major aspects remain elusive. In particular the transition fromcircumstellar matter to interstellar matter is poorly known. It has now also becomeclear that the interaction of mass outflows with the pre-existing interstellar mediumon the one hand substantially complicate the interpretation of observational data, buton the other hand provide a new tool to study the interstellar medium. This proposalis dedicated to the investigation of peculiar types of extended structure c.q. bowshock emission and dusty arcs observed around AGB stars. We will obtain deep PACS 100and 160 micron scan maps of so-called bullet and eye-shaped interaction zonesto study the infra-red emission at high angular resolution and model the bow shock SED to probe its dust and gas content.
Publication
Eyes in the sky. Interactions between asymptotic giant branch star winds and the interstellar magnetic field | van Marle A. J. et al. | Astronomy & Astrophysics Volume 570 id.A131 14 pp. | 570 | 10.1051/0004-6361/201424452 | 2014A&A...570A.131V | http://adsabs.harvard.edu/abs/2014A%26A...570A.131V
Instrument
PACS_PacsPhoto_largeScan
Temporal Coverage
2012-01-11T23:14:04Z/2012-12-13T13:32:50Z
Version
SPG v14.2.0
Mission Description
Herschel was launched on 14 May 2009! It is the fourth cornerstone mission in the ESA science programme. With a 3.5 m Cassegrain telescope it is the largest space telescope ever launched. It is performing photometry and spectroscopy in approximately the 55-671 µm range, bridging the gap between earlier infrared space missions and groundbased facilities.
European Space Agency, cox et al., 2013, 'Eyes and Bullets'': A study of peculiar bow shocks and dust arcs around AGB stars', SPG v14.2.0, European Space Agency, https://doi.org/10.5270/esa-r3275sq
