Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.258..399c&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 258, no. 2, Sept. 15, 1992, p. 399-403.
Astronomy and Astrophysics
Astronomy
40
Infrared Stars, Interstellar Matter, Pre-Main Sequence Stars, Star Formation, Stellar Evolution, Black Body Radiation, Carbon Monoxide, Early Stars, Luminous Intensity, T Tauri Stars
Scientific paper
CO-12 overtone absorption bands have been detected in five of 10 low-luminosity YSOs studied in the Ophiuchus cloud core. The majority of those showing absorption have class II spectral energy distributions. The majority of the class I objects show no spectral features at all. If the bands are assumed to be photospheric in origin, then the results can be understood as a decrease in veiling by an IR continuum excess as the sources evolve from class I to class II.
Casali Mark M.
Matthews Henry E.
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