Infrared observations of young stars - VIII. Spectra in the ten-micron region
Open Access
- 1 July 1980
- journal article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 191 (3) , 499-509
- https://doi.org/10.1093/mnras/191.3.499
Abstract
Filter-wheel spectrophotometry with Δλ/λ ∼ 0.15 is presented of 14 young stars. Very similar broad emission features are seen in five stars which qualitatively compare very favourably with the ‘silicate’ emission of the Orion Trapezium region. HL Tau has a silicate absorption feature, and three other stars show weak 10-μm absorptions. The amount of silicate material observed in HL Tau is ∼ 10-4g cm-2. It does not seem that one can predict either the presence/absence of a 10-μm emission/absorption feature, or its magnitude, in an individual star.Keywords
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