Change search
ReferencesLink to record
Permanent link

Direct link
First NH3 detection of the Orion Bar
Stockholm University, Faculty of Science, Department of Astronomy.
Stockholm University, Faculty of Science, Department of Astronomy.
Show others and affiliations
2003 (English)In: Astronomy and Astrophysics, ISSN 0004-6361, E-ISSN 1432-0746, Vol. 402, L69-L72 p.Article in journal (Refereed) Published
Abstract [en]

Odin has successfully observed three regions in the Orion A cloud, i.e. Ori KL, Ori S and the Orion Bar, in the 572.5 GHz rotational ground state line of ammonia, ortho-NH3 (J,K) = (1,0) -> (0,0), and the result for the Orion Bar represents the first detection in an ammonia line. Several velocity components are present in the data. Specifically, the observed line profile from the Orion Bar can be decomposed into two components, which are in agreement with observations in high-J CO lines by Wilson et al. (\cite{wilson01}). Using the source model for the Orion Bar by these authors, our Odin observation implies a total ammonia abundance of NH3/H2 = 5x 10-9. Based on observations with Odin, a Swedish-led satellite project funded jointly by the Swedish National Space Board (SNSB), the Canadian Space Agency (CSA), the National Technology Agency of Finland (Tekes) and Centre National d'Études Spatiales (CNES). The Swedish Space Corporation has been the industrial prime contractor.

Place, publisher, year, edition, pages
2003. Vol. 402, L69-L72 p.
Keyword [en]
ISM: individual objects: Orion A, clouds, molecules, abundances, stars: formation
Research subject
URN: urn:nbn:se:su:diva-30918DOI: 10.1051/0004-6361:20030342OAI: diva2:274760
Available from: 2009-10-31 Created: 2009-10-30 Last updated: 2011-02-15Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Larsson, B.Liseau, R.Florén, H. G.Nordh, L. H.Olofsson, G.Sandqvist, Aa.
By organisation
Department of Astronomy
In the same journal
Astronomy and Astrophysics

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 28 hits
ReferencesLink to record
Permanent link

Direct link