A dataset provided by the European Space Agency

Name SDP_mgroen01_3
Title The circumstellar environment in post-main-sequence objects
URL

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DOI https://doi.org/10.5270/esa-nd1bzt1
Author groenewegen, m.
Description Mass loss is one of the most fundamental properties of post-main
sequence evolution. The mass-loss process leads to the formation of
circumstellar shells containing dust and molecules. Although the
mass-loss phenomenon has been studied since the 1960s, and important
results have been obtained with the IRAS, ISO and Spitzer space
missions, the details of the mass-loss process and the formation and
evolution of the circumstellar shells are still not well
understood. With its improved spatial resolution compared to ISO and
Spitzer, better sensitivity, the extension to
longer and unexplored wavelength regions, and medium resolution
spectrometers, the combination of PACS and SPIRE observations will
lead to a significant improvement in our understanding of the
phenomena of mass loss and dust formation.

The main aims of this programme are three-fold: (1) to study the time
dependence of the mass loss process, via a search for shells and
multiple shells around a wide range of evolved objects, in order to
quantify the total amounts of mass lost at the various evolutionary
stages of low to high-mass stars, (2) to study the dust and gas
chemistry as a function of progenitor mass, and (3) to study the
properties and asymmetries of evolved star envelopes.

To this end, a sample of 103 Asymptotic Giant Branch and Red Super
Giants, post-AGB and Planetary Nebulae, Luminous Blue Variables and
Wolf-Rayet stars, and 5 Supernovae remnants will be imaged with PACS
at 70+170 micron, and a sub-set of 32 stars will be imaged at all 3
wavelengths with SPIRE.

In spectroscopy, a sample of 55 stars will be observed over the full
wavelength range of PACS and, 23 stars will be observed with the SPIRE FTS.

The sample of AGB stars has been selected to cover all chemical types
(M-, S-, C-stars), variability types (irregular, semi-regular, Miras)
and ...periods, and mass-loss rates. Stars have been selected to have
high IRAS fluxes and low background levels. The spectroscopic targets
are typically the brightest of the mapping targets
Publication Deconvolution of Images from BLAST 2005: Insight into the K3-50 and IC 5146 Star-forming Regions . Roy Arabindo et al. . The Astrophysical Journal, Volume 730, Issue 2, article id. 142, 12 pp. (2011). . 730 . 10.1088\/0004-637X\/730\/2\/142 . 2011ApJ...730..142R ,
Interstellar and Ejecta Dust in the Cas A Supernova Remnant . Arendt Richard G. et al. . The Astrophysical Journal, Volume 786, Issue 1, article id. 55, 22 pp. (2014). . 786 . 10.1088\/0004-637X\/786\/1\/55 . 2014ApJ...786...55A ,
The dust mass in Cassiopeia A from a spatially resolved Herschel analysis . De Looze I. et al. . Monthly Notices of the Royal Astronomical Society, Volume 465, Issue 3, p.3309-3342 . 465 . 10.1093\/mnras\/stw2837 . 2017MNRAS.465.3309D ,
The dust budget crisis in high-redshift submillimetre galaxies . Rowlands K. et al. . Monthly Notices of the Royal Astronomical Society, Volume 441, Issue 2, p.1040-1058 . 441 . 10.1093\/mnras\/stu605 . 2014MNRAS.441.1040R ,
The Footprint Database and Web Services of the Herschel Space Observatory . Dobos László et al. . Experimental Astronomy, Volume 42, Issue 2, pp.139-164 . 42 . 10.1007\/s10686-016-9502-5 . 2016ExA....42..139D ,
Near-infrared Extinction due to Cool Supernova Dust in Cassiopeia A . Lee Yong-Hyun et al. . The Astrophysical Journal, Volume 808, Issue 1, article id. 98, 14 pp. (2015). . 808 . 10.1088\/0004-637X\/808\/1\/98 . 2015ApJ...808...98L ,
A Herschel PACS and SPIRE study of the dust content of the Cassiopeia A supernova remnant . Barlow M...
Instrument SPIRE_SpireSpectrometer_, PACS_PacsPhoto_largeScan, SPIRE_SpirePhoto_large
Temporal Coverage 2009-09-12T10:43:38Z/2010-03-27T18:00:03Z
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 2011-03-27T17:17:53Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, groenewegen, m., 2011, SDP_mgroen01_3, SPG v14.2.0, European Space Agency, https://doi.org/10.5270/esa-nd1bzt1