Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...281l..29a&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 281, no. 1, p. L29-L32
Astronomy and Astrophysics
Astronomy
12
Emission Spectra, Infrared Spectroscopy, Interstellar Extinction, Pre-Main Sequence Stars, Stellar Envelopes, Carbon Monoxide, Infrared Astronomy, Star Formation, Stellar Luminosity
Scientific paper
We present the discovery of extended CO bandhead emission from 2.29-2.43 micrometers in the northern near-IR bipolar reflection lobe of the high-luminosity pre-main sequence object GGD27-IRS. The emission appears correlated with the bright U-shaped nebulous feature seen in broad band images suggesting that this is one area of the nebula with a direct line-of-sight to the core region of the source i.e. to the young stellar object itself, its accretion disk and/or the dense inner parts of the CO outflow. We discuss the features observed in the long-slit spectroscopy observations and consider the nature and extent of both the physical and geometrical information that can be indirectly obtained by observing reflection nebulosity in regions of high extinction where the young star itself is completely obscured from direct view.
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