APEX 1 mm line survey of the Orion Bar

Free access article

Issue		A&A Volume 454, Number 2, August I 2006 APEX Special Booklet


Page(s)		L47 - L50
Section		Letters
DOI		http://dx.doi.org/10.1051/0004-6361:20065555

A&A 454, L47-L50 (2006)
DOI: 10.1051/0004-6361:20065555

Letter

APEX 1 mm line survey of the Orion Bar

S. Leurini¹, R. Rolffs¹, S. Thorwirth¹, B. Parise¹, P. Schilke¹, C. Comito¹, F. Wyrowski¹, R. Güsten¹, P. Bergman², K. M. Menten¹ and L.-Å. Nyman²

¹ Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
e-mail: sleurini@mpifr-bonn.mpg.de
² European Southern Observatory, Casilla 19001, Santiago, Chile

(Received 5 May 2006 / Accepted 24 May 2006 )

Abstract
Context.Unbiased molecular line surveys are a powerful tool for analyzing the physical and chemical parameters of astronomical objects and are the only means for obtaining a complete view of the molecular inventory for a given source. The present work stands for the first such investigation of a photon-dominated region.
Aims.The first results of an ongoing millimeter-wave survey obtained towards the Orion Bar are reported.
Methods.The APEX telescope in combination with the APEX-2A facility receiver was employed in this investigation.
Results.We derived the physical parameters of the gas through LVG analyses of the methanol and formaldehyde data. Information on the sulfur and deuterium chemistry of photon-dominated regions is obtained from detections of several sulfur-bearing molecules and DCN.

Key words: ISM: individual objects: Orion Bar -- ISM: abundances -- ISM: molecules

What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access. An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.

If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
You can define your own OpenURL resolver with your EDPS Account. In this case your choice will be given priority over that of your library.
You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.