Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.258..684a&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 258, no. 4, p. 684-692.
Astronomy and Astrophysics
Astronomy
18
Fabry-Perot Interferometers, Hydrogen, Infrared Astronomy, Interstellar Gas, Molecular Gases, Pre-Main Sequence Stars, Line Spectra, Red Shift, Stellar Evolution
Scientific paper
Fabry-Perot images of the v = 1-0 S(1) (lambda = 2.122 microns) line of molecular hydrogen in the core region of the energetic bipolar outflow source associated with NGC 2071 are presented. A Fabry-Perot with an FWHM of 100 km/s is used to sample the velocity range -167 to +167 km/s from the wavelength of peak flux. A velocity cube of 11 images is obtained; each image covers an area of about 36 x 36 sq arcsec at a spatial resolution of 0.62 arcsec per pixel. The S(1) emission is found to be highly structured on spatial scales of a few arcsec, and to peak in intensity directly on IRS1. The northeast condensation is predominantly blueshifted with respect to IRS1, while the southwest condensation is mostly redshifted. It is suggested that IRS1, IRS2, and possibly IRS3 are all self-luminous PMS stars at similar evolutionary stages.
Aspin Colin
Sandell Goeran
Walther Dolores M.
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