Hostname: page-component-6bf8c574d5-86b6f Total loading time: 0 Render date: 2025-03-09T17:56:00.856Z Has data issue: false hasContentIssue false
  • English
  • Français

Infrared Observations of Be Stars (Review Paper)

Published online by Cambridge University Press:  23 September 2016

Henny J.G.L.M. Lamers
Henny J.G.L.M. Lamers*
Affiliation:
Center for Astrophysics and Space Astronomy, University of Colorado, Boulder SRON Laboratory for Space Research, Utrecht, the Netherlands

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The first indication that Be stars have an excess near-IR radiation, compared to normal stars of the same spectral type was found by Johnson et al. (1966). Johnson (1967) noticed that in his sample of 85 early type stars all the Be stars and shell stars had an excess in K-L and he concluded that this is due to IR emission from circumstellar shells. Woolf et al. (1970) suggested that the IR excess of Be stars might be due to free-free emission in the ionized circumstellar envelope which also produces the Balmer emission lines, but their observations at 5 and 10 µ could not rule out the possibility that circumstellar dust contributed to the excess. The observations by Allen (1973) of a large number of Be stars up to a wavelength of 3.5 µ could not make the distiction between free-free or dust emission either.

Type
III. The Circumstellar Gas
Information
International Astronomical Union Colloquium , Volume 92: Physics of Be Stars , August 1987 , pp. 219 - 236
Copyright
Copyright © Cambridge University Press 1987

References

Allen, C.W. 1973, Astrophysical Quantities, Athlone Press, London Google Scholar
Allen, D.A. 1973, MNRAS 161, 145 Google Scholar
Ashok, N.M., Bhatt, H.C., Kulkarni, P.V., Joshi, S.C. 1984, MNRAS 211, 471 Google Scholar
Bjorkman, K. 1986, Private CommunicationsGoogle Scholar
Cassinelli, J.P., Hartmann, L. 1977, Ap. J. 212, 488 Google Scholar
Cassinelli, J.P., Waters, L.B.F.M. 1987 in preparationGoogle Scholar
Chalabaev, A.A., Maillard, J.P. 1985, Ap. J. 294, 640 Google Scholar
Coté, J. 1987 Astr. Ap. (submitted)Google Scholar
Coté, J., Waters, L.B.F.M. 1987 Astr. Ap. (in press)Google Scholar
Dachs, J., Hanuschik, R., Kaiser, D., Ballereau, D., Bouchet, D., Kiehling, R., Kozok, J., Rudolph, R., Schlosser, W. 1986, Astr. Ap. Sup. 63, 87 Google Scholar
Dachs, J., Wamsteker, W. 1982, Astr. Ap. 107, 240 Google Scholar
Doazan, V., Thomas, R.N. 1982 in Proc. Third European IUE Conference, p. 287Google Scholar
Feinstein, A. 1982, in: Be stars; eds.: Jaschek, M. and Groth, H.G., Reidel, Dordrecht, p. 235 Google Scholar
Gehrz, R.D., Hackwell, J.A., Jones, T.W. 1974, Ap. J. 191, 675 Google Scholar
Houziaux, L., Andrillat, I. 1982 in: Be stars, eds.: Jaschek, M. and Groth, H.G., Reidel, Dordrecht, p. 211 Google Scholar
IRAS Explanatory Supplement to the Catalogues and Atlasses, 1985, eds.: Beichman, Neugebauer, Habing, Clegg, Chester, JPL D-1855Google Scholar
Johnson, H.L., 1967, Ap. J. Letters 150, L 39 Google Scholar
Johnson, H.L., Mitchell, R.I., Iriarte, B., Wisniewski, W.Z. 1966, Comm. Lunar Plan. Lab. 4, 99 Google Scholar
Kurucz, R.L. 1979, Ap. J. Suppl. 40, 1 Google Scholar
Lamers, H.J.G.L.M., Waters, L.B.F.M. 1987, Astr. Ap. (in press)Google Scholar
Lowe, R.P., Moorhead, J.M., Wehlau, W.H., Barker, P.K., Marlborough, J.M. 1985, Ap. J. 290, 325.Google Scholar
McClean, I.S., Brown, J.D. 1978, Astr. Ap. 69, 291 Google Scholar
McClean, I.S., Clarke, D. 1979, MNRAS 186, 245 Google Scholar
Mendoza, E.E. 1982 in: Be stars, eds.: Jaschek, M. and Groth, H.G., Reidel, Dordrecht, p. 3 Google Scholar
Neto, A.G., de Freitas Pacheco, J.A. 1982, MNRAS 198, 659 Google Scholar
Oegerle, W.R., Polidan, R.S. 1984, Ap. J. 285, 648 Google Scholar
Persi, P., Ferrari-Toniolo, M. 1985 in: Multifrequency behaviour of Galactic accreting sources, ed.: Giovanelli, F., p. 275 Google Scholar
Poeckert, R., Marlborough, J.M. 1978, Ap. J. Suppl. 38, 229 Google Scholar
Thomas, R.N. 1983 in: Stellar Atmospheric Structure Patterns, NASA SP-471, p. 279 Google Scholar
Waters, L.B.F.M. 1986a, Astr. Ap. Letters 159, L1 Google Scholar
Waters, L.B.F.M. 1986b, Astr. Ap. 162, 121 Google Scholar
Waters, L.B.F.M., Coté, J., Aumann, H.H. 1986, Astr. Ap. (in press)Google Scholar
Waters, L.B.F.M., Coté, J., Lamers, H.J.G.L.M. 1987, Astr. Ap. (in press)Google Scholar
Waters, L.B.F.M., Lamers, H.J.G.L.M. 1984, Astr. Ap. Suppl. 57, 327.Google Scholar
Waters, L.B.F.M., Taylor, R. 1987, Astr. Ap. (submitted)Google Scholar
Woolf, N.J., Stein, W.A., Strittmatter, P.A. 1970, Astr. Ap. 9, 252 Google Scholar
Wright, A.E., Barlow, M.J. 1975, MNRAS. 178, 41 Google Scholar