Dust and Molecules in V4743 Sgr

Details Dust and Molecules in V4743 Sgr Dust and Molecules in V4743 Sgr

2003-02-12

arxiv.org/abs/astro-ph/0302244v1

Astronomy and Astrophysics

Astrophysics

Latex, 4 pages, 3 figures

Scientific paper

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 T_A* = 0.06 K for CO and T_A* = 0.03 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.

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