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 European Space Agency
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, Investigating Agb Dust Condensation Conditions., SPG v14.2.0, European Space Agency, https://doi.org/10.5270/esa-c0c9ci5