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On the Origin of H2 in T Tau Stars

Published online by Cambridge University Press:  12 April 2016

G. Strazzulla ,
V. Pirronell  and
G. Foti
G. Strazzulla
Affiliation:
Osservatorio Astrofisico, V.le A. Doria, 6,I-95125, Catania
V. Pirronell
Affiliation:
Osservatorio Astrofisico, V.le A. Doria, 6,I-95125, Catania Istituto di Fisica, Facoltà di Ingegneria, Catania
G. Foti
Affiliation:
Istituto di Struttura della Materia, Catania

Extract

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Narrow-band spectrophotometry observations (Cohen, 1975) showed that the extremely young star HL Tau has an absorption feature at 3.1 μm well matched by extinction from pure ice solid grains (radius a≈0.3μm, mice ≈10-4 gr cm-2). This feature, not present in others (more evolved) T Tau stars, suggests that ice may be only found around the very youngest T Tau stars and progressively disappears as starsbecome increasingly visible through their circumstellarshells (Cohen, 1975).

Type
Session III: Observed Activity in Related Objects
Information
International Astronomical Union Colloquium , Volume 71: Activity in Red-Dwarf Stars , 1983 , pp. 523 - 524
Copyright
Copyright © Reidel 1983

References

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