HDO emission in the solar-type protostar IRAS 16293-2422 [Poster]

Parise, Berengere, Caux, Emmanuel, Castets, Alain, Ceccarelli, Cecilia and Tielens, Alexander 2005. HDO emission in the solar-type protostar IRAS 16293-2422 [Poster]. Presented at: Dusty and Molecular Universe, Paris, France, 27-29 October 2004. The Proceedings of the Dusty and Molecular Universe: a Prelude to Herschel and ALMA: 27-29 October 2004, Ministère de la Recherche, Paris, France. PROCEEDINGS OF THE DUSTY AND MOLECULAR UNIVERSE: A PRELUDE TO HERSCHEL AND ALMA. ESA SP (577) Noordwijk: ESA Publications, pp. 405-406.

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Abstract

We present millimeter observations of five HDO rotational lines towards the low-mass protostar IRAS 16293-2422, with upper energies ranging from 22 to 167K. This allows to derive the HDO abundance in the inner warm envelope (hot corino) of the protostar and in the outer cold envelope. The deuteration ratio is ar least one order of magnitude smaller than the deuteration of formaldehyde or methanol. The result brings new constraints to chemical models.

Item Type:	Conference or Workshop Item (Poster)
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QB Astronomy
Uncontrolled Keywords:	Star Formation; Deuterium; Protostar
Publisher:	ESA Publications
ISBN:	9290928557
Related URLs:	http://adsabs.harvard.edu/abs/2005ESASP.... Publisher
Last Modified:	19 Mar 2016 09:42
URI:	https://orca.cardiff.ac.uk/id/eprint/52824

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