EDP Sciences
Free access
Issue
A&A
Volume 412, Number 3, December IV 2003
Page(s) 767 - 769
Section Formation, structure and evolution of stars
DOI http://dx.doi.org/10.1051/0004-6361:20031476


A&A 412, 767-769 (2003)
DOI: 10.1051/0004-6361:20031476

Search for molecular emission from V838 Monocerotis

M. T. Rushton1, I. M. Coulson2, A. Evans1, L.-Å. Nyman3, B. Smalley1, T. R. Geballe4, J. Th. van Loon1, S. P. S. Eyres5 and V. H. Tyne1

1  Astrophysics Group, School of Chemistry and Physics, Keele University, Staffordshire, ST5 5BG, UK
2  Joint Astronomy Centre, 660 N. A`ohoku Place, University Park, Hilo, HI 96720, USA
3  European Southern Observatory, Alonso de Cordova 3107, Casilla 19001, Santiago 19, Chile
4  Gemini Observatory, 670 N. A`ohoku Place, University Park, Hilo, HI 96720, USA
5  Centre for Astrophysics, University of Central Lancashire, Preston, Lancashire, PR1 2HE, UK

(Received 21 February 2003 / Accepted 18 September 2003)

Abstract
We present a search for  12CO and SiO emission in V838 Mon. We derive upper limits on the 12CO and SiO emission, and on the total mass of the circumstellar material. Using an excitation temperature of 1000 K, and a likely distance of 6 kpc, the non-detection of 12CO emission leads to a 3 $\sigma$ upper limit on the mass of gas around the central star to be 10 -2  $M_{\odot}$.


Key words: stars: circumstellar matter -- stars: individual: V838 Mon

Offprint request: M. T. Rushton, mtr@astro.keele.ac.uk

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