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, firstname.lastname@example.org
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