Emission lines from shocks: water, molecular hydrogen, and low-excitation ions in the Cep A East and HH 7-11 outflows

Details Emission lines from shocks: water, molecular hydrogen, and low-excitation ions in the Cep A East and HH 7-11 outflows Emission lines from shocks: water, molecular hydrogen, and low-excitation ions in the Cep A East and HH 7-11 outflows

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sptz.prop..113m&link_type=abstract

Spitzer Proposal ID #113

Astronomy and Astrophysics

Astrophysics

Scientific paper

Emission lines from shocks: water, molecular hydrogen, and low-excitation ions in the Cep A East and HH 7-11 outflows PI: Gary Melnick, Center for Astrophysics Co-Is: Ted Bergin, Center for Astrophysics David Neufeld, Johns Hopkins U. Dan Watson, U. Rochester SIRTF and the IRS offer access, at moderate spectral and spatial resolution, to some of the best molecular and atomic probes of the outflows and shocks associated with recent star formation. Here we intend to use IRS for emission-line imaging of Cepheus A East and HH 7-11, two well-known star-formation regions that were studied in detail by SWAS. The maps we obtain will include extended emission by molecular hydrogen (v = 0 S(0)-S(5)) and water (several pure rotational lines), as well as numerous transitions of low-excitation atomic and ionic species associated with jets and shocks. We will use these data, combined with SWAS observations of thermal water-line emission and shorter-wavelength H2 and [Fe II] images, in models of the excitation, energetics and chemistry of the shocked gas.

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