Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...209.3001l&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #30.01; Bulletin of the American Astronomical Society, V
Astronomy and Astrophysics
Astronomy
Scientific paper
We present a study of the stellar and circumstellar properties of Class I sources using low-resolution (R 1000) near-IR spectroscopy. We measure key spectral lines and features in 8 objects and fit models generated from standard star spectra to the protostellar spectra to obtain values for visual extinction, K-band excess, and estimates for the spectral type, all of which are found to be consistent with typical Class I protostellar values. Some properties for certain stars found in our analysis vary from values presented in the literature; we discuss and analyze the origin of these differences. We determine extinction to each target star using 3 different methods, compare the resulting values, and speculate as to why they are discrepant. Our results illustrate the value of low-resolution spectroscopy in the study of protostars and their environments; however, the optimal approach to this type of investigation may ultimately involve a combination of highand low-resolution near-infrared and mid-infrared observations. This work has been supported in part by NSF grant AST-0453611.
Johns-Krull Christopher M.
Lockhart Kelly
Prato Lisa
Rayner John T.
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