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Дата изменения: Tue Sep 11 16:56:41 2007 Дата индексирования: Sat Dec 22 08:16:20 2007 Кодировка: Поисковые слова: trees |
by
1 Osservatorio Astrofisico di Arcetri, Largo Enrico Fermi 5, I-50125 Firenze, Italy
2 Dipartimento di Astronomia e Scienza dello Spazio, Universitá di Firenze, Largo E. Fermi, 5, I-50125 Firenze, Italy
3 Department of Physics, Mathematics &Astronomy, Caltech, Pasadena, CA, 91125, USA
4 Astrophysics Division, Space Science Department, ESTEC, Postbus 299, NL-2200 AG Noordwijk, The Netherlands
The distribution of the high density molecular gas traced by the
CS J emission is highly concentrated around
V1318 and V1686 Cygni, while the total column density of gas traced by the
J
shows a ridge morphology centered on these
sources. The Herbig star
lies at the edge of both structures.
From the otpically thin
emission, we derive a total molecular mass
of
. A molecular outflow has been detected in
CO J
. The high velocity gas is confined to a compact region
of size
, corresponding to a physical length of 0.1 pc.
The outflow is not well resolved, or collimated, on the observed scales.
We have also detected
maser emission at 22.2 GHz at a position coincident
with the center of the bipolar outflow. Both the maser and the outflow
are located at the position of the southern source V1318S which we
identify as the source responsible for the activity observed in the
BD+40 region.
lt@arcetri.astro.it