| Issue |
A&A
Volume 400, Number 1, March II 2003
|
|
|---|---|---|
| Page(s) | L5 - L8 | |
| Section | Letters | |
| DOI | https://doi.org/10.1051/0004-6361:20030107 | |
| Published online | 24 February 2003 | |
Letter to the Editor
Looking for dust and molecules in Nova V4743 Sagittarii*
European Southern Observatory, Casilla 19001, Santiago 19, Chile
Corresponding author: M. Nielbock, mnielboc@eso.org
Received:
8
November
2002
Accepted:
24
January
2003
We present 1.2 mm continuum images and spectral line observations
of CO(1–0) and SiO(3–2) rotational transitions of the recent nova V4743 Sgr.
The nova is detected at 1.2 mm showing a variable millimetre emission.
Only upper limits of 
K for CO and
K for SiO could be derived. We discuss
the results in terms the nature of the millimetre emission favouring dust from
a phase before the recent outburst as the likely radiating source.
We also comment on the possibility of free–free emission
from the ionised shell as the source of the measured millimetre radiation.
Key words: ISM: dust / ISM: molecules / stars: novae / stars: individual: V4743 Sgr
© ESO, 2003
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