Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.9213g&link_type=abstract
American Astronomical Society, AAS Meeting #211, #92.13; Bulletin of the American Astronomical Society, Vol. 39, p.889
Astronomy and Astrophysics
Astronomy
Scientific paper
We present 5-37 um deep Spitzer-IRS spectral line maps of the outflow region Cep A West (GGD 37). The maps show clear evidence for two superposed flows in this region, one of which appears to originate from the region around the W1, W2, and W3 radio objects. A large number of ionic fine-structure lines, rotational molecular hydrogen and deuterated hydrogen lines are detected, as well as many transitions of water. The region around the radio objects W1-3 exhibits particularly strong emission from higher excitation lines such as [NeIII], as does the working surface of the jet. The relative intensities of the ionic lines suggest the presence of a strong J-type shock, and the molecular lines trace a strong C-type shock. The spectral datacube contains one of the most comprehensive diagnostic surveys of strong J-type shocks and C-type shocks. This dataset also contains strong observations of the injection of energy and momentum into an ambient molecular cloud by young stellar object outflows.
Green Joel D.
Watson Dan
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