A dataset provided by the European Space Agency

Name GT1_bdevries_2
Title The rich mineralogy of the post Asymptotic Giant Branch star MWC922.


DOI 10.5270/esa-ludo81o
Author de vries, b.
Description We propose to observe a full SED of the post Asymptotic Giant Branch star (post-AGB) MWC922. ISO spectra have already shown that this object has a very rich mineralogy. With a full spectral scan we want to get a complete inventory of the solid state bands in this object. MWC922 is one of the few sources that shows a narrow band at 65 micron that can be assigned to enstatite, and as such could serve as an important template to establish the signature of cold enstatite in circumstellar environments. MWC922 also shows a broad band centered around 65 micron, whose nature is under discussion but could be diopside. This could offer the rare occasion where cold diopside could be studied. Solid state bands in the spectrum will be identified using laboratory data available in the literature and we will establish relative abundances of the materials. Furthermore, the presence of the narrow 65 micron enstatite band can be verified and we can search for other enstatite bands in the 65-75 micron wavelength range (clino and ortho enstatite).
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 ,
Instrument PACS_PacsRangeSpec_point
Temporal Coverage 2011-09-27T08:15:04Z/2011-09-27T09:13:41Z
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 ┬Ám range, bridging the gap between earlier infrared space missions and groundbased facilities.
Creator Contact https://support.cosmos.esa.int/herschel/
Date Published 2012-03-27T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2012-03-27T00:00:00Z, GT1_bdevries_2, SPG v14.2.0. https://doi.org/10.5270/esa-ludo81o