Three micron ice-band features in the Rho Ophiuchi sources

Details Three micron ice-band features in the Rho Ophiuchi sources Three micron ice-band features in the Rho Ophiuchi sources

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...352..724t&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 352, April 1, 1990, p. 724-730. Research supported by the University of Tsu

Astronomy and Astrophysics

Astrophysics

81

Absorption Spectra, Emission Spectra, Molecular Clouds, Ophiuchi Clouds, Pre-Main Sequence Stars, Giant Stars, Ice, Optical Thickness

Scientific paper

Low-resolution spectra in the 2.4-3.8 micron range are presented for 31 sources in the Rho Oph dark cloud. The characteristics of the 3-micron spectra for protostars, emission-line stars, associated early-type stars, and background M giant stars are examined. Consideration is given to the relationship between ice-band absorption and H-K magnitude. The results show the existence of ice-mantled grains in the circumstellar disks of emission-line stars. The processes controling the formation of H2O ice in dark clouds are discussed.

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