SUCCESS: A SUbmm Catalogue of Circumstellar Envelope of StarS with Herschel/HIFI

Details SUCCESS: A SUbmm Catalogue of Circumstellar Envelope of StarS with Herschel/HIFI SUCCESS: A SUbmm Catalogue of Circumstellar Envelope of StarS with Herschel/HIFI

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011iaus..280p.353t&link_type=abstract

The Molecular Universe, Posters from the proceedings of the 280th Symposium of the International Astronomical Union held in Tole

Astronomy and Astrophysics

Astronomy

Scientific paper

We present the first results of a biased survey of sub-millimetre and FIR CO transitions towards the circumstellar envelopes of AGB and post-AGB stars. This Herschel Guaranteed Time programme uses the HIFI instrument to collect the emission of two CO transitions (J=5-4 and J=9-8) in 74 sources, as well as the J=14-13 transition in the 10 most intense or intriguing sources of the sample. The sample covers most variety of chemistry (carbon-, oxygen-rich, and S-type stars) and evolution (AGB, post-AGB, and OH/IR) in this kind of objects. These observations provide access to the emission of the envelope gas layers in the temperature range ~100 to 2000K. These warm layers are fundamental to the field of stellar evolution because they are the regions where the acceleration of the gas takes place, and therefore where the envelopes are being formed. Because of the significant atmospheric opacity affecting ground-based observations at the corresponding wavelengths, this warm gas could never be probed in a systematic manner over large source samples. Combined to the smaller sample collected by the GTKP HIFISTARS, these data will form an unprecedented catalogue of over 100 AGB and post-AGB stars in two to three fundamental CO lines of the sub-millimetre and FIR domain, and offer a legacy data-base for the modelling of the shaping parameters of evolved stars.

Affiliated with

Also associated with

No associations

Rating

SUCCESS: A SUbmm Catalogue of Circumstellar Envelope of StarS with Herschel/HIFI 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 SUCCESS: A SUbmm Catalogue of Circumstellar Envelope of StarS with Herschel/HIFI, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and SUCCESS: A SUbmm Catalogue of Circumstellar Envelope of StarS with Herschel/HIFI will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-931165