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High Resolution Studies of Molecular Hydrogen by Means of Near-Infrared Fabry-Perot Imaging

Published online by Cambridge University Press:  12 April 2016

Antonio Chrysostomou ,
Michael Burton ,
David Axon ,
Peter Brand ,
James Hough ,
Joss Bland-Hawthorn  and
Tom Geballe
Antonio Chrysostomou
Affiliation:
Division of Physical Sciences, University of Hertfordshire, Hatfield, HERTS AL10 9AB, UK
Michael Burton
Affiliation:
School of Physics, University of New South Wales, PO BOX 1, Kensington, NSW 2033, Australia
David Axon
Affiliation:
STScI, 3700 San Martin Drive, Homewood Campus, Baltimore, MD21218, USA
Peter Brand
Affiliation:
Institute for Astronomy, University of Edinburgh, Blackford Hill, Edinburgh, EH9 3HJ, UK
James Hough
Affiliation:
Division of Physical Sciences, University of Hertfordshire, Hatfield, HERTS AL10 9AB, UK
Joss Bland-Hawthorn
Affiliation:
Anglo-Australian Observatory, Epping Laboratory, PO BOX 296, Epping, NSW 2121, Australia
Tom Geballe
Affiliation:
Joint Astronomy Centre, N. A ’ohoku Place, University Park, Hilo, Hawaii, USA

Abstract

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We present a study of the velocity profiles of the v=l-0 S(1) transition of molecular hydrogen (H2) towards the star forming region of OMC-1. A three dimensional data cube is presented which displays the spatial distribution as well as the velocity structure of the H2 emission. A brief description of the data acquisition, reduction and analysis is given.

The three dimensional aspect of the data has allowed us to re-examine the kinematic nature of the region. The results reveal a number of isolated sources which posses asymmetric velocity profiles which can be modelled by bow C-shocks. The implication is that these sources are compact knots of material which were involved in some explosive event, possibly associated with the luminous source IRc2, and are ploughing into the dense molecular disk around IRc2. It is likely that these bullets are associated with those discovered by Allen & Burton (1993).

Type
2. The Fabry-Perot Spectrometer and its Applications
Information
International Astronomical Union Colloquium , Volume 149: Tridimensional Optical Spectroscopic Methods in Astrophysics , 1995 , pp. 173 - 181
Copyright
Copyright © Astronomical Society of the Pacific 1995

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