A dataset provided by the European Space Agency

Name OT2_jcami_3
Title Investigating AGB dust condensation conditions.


DOI https://doi.org/10.5270/esa-c0c9ci5
Author cami, j.
Description We propose to observe five AGB stars with low mass-loss rates using Herschel-PACS in spectroscopy mode between 51 and 73 micron. This wavelength range covers the high-excitation lines of CO and SiO that will allow us to determine the density and temperature of the inner wind where dust is being formed, and thus shed light on the actual physical conditions that determine the outcome of the dust formation process. The AGB stars with low mass-loss rates are particularly important in these studies since their IR dust spectra represent the first dust grains to nucleate, and moreover exhibit the largest diversity in dust condensation products. Our sample thus represents a subset of evolved stars that is indispensable to understand this condensation process, but that is at best highly underrepresented in currently approved evolved stars programs with Herschel. When combined with data from these existing programs, our observations will allow to make great progress in our understanding of the the dust condensation process in AGB stars. The small (2.4 hours) complementary program we propose here will thus greatly increase the scientific return of these programs.
Publication THROES: a caTalogue of HeRschel Observations of Evolved Stars. I. PACS range spectroscopy . Ramos-Medina J. et al. . Astronomy & Astrophysics, Volume 611, id.A41, 38 pp. . 611 . 10.1051/0004-6361/201731940 . 2018A&A...611A..41R ,
PACS and SPIRE range spectroscopy of cool, evolved stars . Nicolaes D. et al. . Astronomy & Astrophysics, Volume 618, id.A143, 42 pp. . 618 . 10.1051/0004-6361/201833168 . 2018A&A...618A.143N ,
Instrument PACS_PacsRangeSpec_point
Temporal Coverage 2012-04-08T19:38:48Z/2012-10-07T23:18:21Z
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.
Creator Contact https://support.cosmos.esa.int/h®erschel/
Date Published 2013-04-07T22:22:39Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2013, OT2_jcami_3, SPG v14.2.0. https://doi.org/10.5270/esa-c0c9ci5