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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

REFERENCES

Brown, W.L., Lanzerotti, L.J., Poate, J.M. and Augustyniak, W.M.: 1978, Phys. Rev. Lett., 40, 1027.Google Scholar
Brown, W.L., Augustyniak, W.M., Simmons, E., Marcantonio, K.J., Lanzerotti, L.J., Johnson, R.E., Boring, J.W., Reimann, C.T., Foti, G. and Pirronello, V.: 1982, Nucl. Instr. Meth. (in press).Google Scholar
Ciavola, G., Foti, G., Torrisi, L., Pirronello, V. and Strazzulla, G.: 1982, Radiation Effects (in press).Google Scholar
Cohen, M.: 1975, MNRAS, 173, 279 Google Scholar
Hollenbach, D. and Me Kee, C.F.: 1979, Astrophys. J., 4l, 555.Google Scholar
Lequeux, J.: 1981, Comments on Astrophys., 9, 117 Google Scholar
Pirronello, V., Strazzulla, G., Foti, G. and Rimini, E.: 1981, Astr. Astrophys., 96, 267.Google Scholar
Pirronello, V., Strazzulla, G. and Foti, G.: 1983, (This volume)Google Scholar
Scwartz, R.D.: 1974, Astrophys. J., 191, 419.Google Scholar
Worden, S.P., Schneeherger, T.J., Kuhn, J.R. and Africano, J.L.: 1981, Astrophys. J., 244, 520.Google Scholar