Discovery of extraordinarily high-J OH in the HH 211 outflow

Details Discovery of extraordinarily high-J OH in the HH 211 outflow Discovery of extraordinarily high-J OH in the HH 211 outflow

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009eimw.confe..64t&link_type=abstract

"The Evolving ISM in the Milky Way and Nearby Galaxies, The Fourth Spitzer Science Center Conference, Proceedings of the confere

Astronomy and Astrophysics

Astrophysics

Ism: Herbig-Haro Objects, Ism: Individual (Hh 211), Ism: Jets And Outflows, Ism: Molecules, Shock Waves

Scientific paper

We present a 5-37 micron infrared spectrum toward the southeastern lobe of the young protostellar outflow HH 211 obtained with the Spitzer Space Telescope. The spectrum shows an exceptionally rich sequence of highly rotationally excited OH (v=0) emission. The highest excited rotational level has an energy E/k≈ 28000 K above the ground level, which is, to our knowledge, by far the highest observed electronic ground-state excitation of OH in any astrophysical environment to date. In addition, we observe several pure rotational water\ (v=0) transitions, H_2 (v=0) S(0) to S(7), HD (v=0) R(3) to R(6), and atomic fine-structure lines from Fe^+, Si^+, S, and Cl.

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