Astronomy and Astrophysics – Astronomy
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aas...212.0805g&link_type=abstract
American Astronomical Society, AAS Meeting #212, #8.05; Bulletin of the American Astronomical Society, Vol. 40, p.200
Astronomy and Astrophysics
Astronomy
Scientific paper
We present high-resolution spectra of the binary protostar L1551 IRS52 spanning 2μm to 5μm. We analyze H2 emission lines in the K band spectra, and fit excitation models to the relative intensities of these lines to determine the origin. CO lines are detected in absorption in the K band, while CO emission is detected in the M band. Various metal lines are also detected. We compare the distribution of the CO emission detected in the M band to the distribution of the H2 emission. We also compare the absorption profile of the metal lines to the CO absorption detected in the K band. We conclude the overtone CO absorption lines are of photospheric origin while the fundamental CO emission lines are of circumstellar origin.
Brittain Sean
Gibb Erika Lynne
Goldsbury Ryan
Henderson Matthew
Rettig Terrence W.
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