Bracket Gamma, Molecular Hydrogen, and Singly-Ionized Iron in GGD 37 (Cep A West)

Details Bracket Gamma, Molecular Hydrogen, and Singly-Ionized Iron in GGD 37 (Cep A West) Bracket Gamma, Molecular Hydrogen, and Singly-Ionized Iron in GGD 37 (Cep A West)

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...189.5004r&link_type=abstract

American Astronomical Society, 189th AAS Meeting, #50.04; Bulletin of the American Astronomical Society, Vol. 28, p.1340

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Scientific paper

We present near-infrared images of the Herbig-Haro objects in GGD 37 in the 2.166 mu m hydrogen recombination line Bracket gamma (R = 70), molecular hydrogen, v = 1 - 0 S(1), 2.122 mu m line, (R = 70), and in the forbidden ionized iron 1.644 mu m line, (R = 800). The Bracket gamma emission appears as a knot near the location of the HW object. The molecular hydrogen emission forms arcs exterior to the iron emission; the morphology is similar to that of the molecular hydrogen / singly-ionized sulfur image of Hartigan, Carpenter, Dougados and Skrutskie (A.J., 111 (3), 1278, 1996). The peak H_2 and [Fe II] line emissions for several of the H-H objects are clearly separated relative to one another, suggestive of multiple shocks. We compare the relative locations of the peak emisssion to predictions from competing shock models. All observations were carried out at the Wyoming Infrared Observatory 2.3 m telescope with the University of Rochester 3rd Generation Infrared Camera. The iron imaging was accomplished in conjunction with the National Air and Space Museum / Naval Research Laboratory Fabry-Perot Interferometer.

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