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Asteroseismology From The Ground

Published online by Cambridge University Press:  12 April 2016

S. Frandsen
S. Frandsen*
Affiliation:
Institute of Physics and Astronomy, Århus University, Denmark

Abstract

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In stars which pulsate in more than one mode, be it acoustic or gravity modes, radial or non-radial, we have a chance to study the interior structure by use of seismic techniques. Generally the greater the number of modes observable the greater the chances will be to obtain valuable direct information about the stellar interior not accessible by any other technique.

The observational problem of acquiring high quality data divides the stars where seismic techniques can be applied into two groups: A group of stars with intensity amplitudes in the range of millimagnitudes and the stars with very small amplitudes around 10 μmagnitudes or less. The first group contains the white dwarfs, the rapidly oscillating Ap stars, the δ-Scuti stars and the β-Cephei stars. The modes are excited directly or indirectly by some form of к-mechanism due to an opacity source which vary from class to class. The second group is made up of stars with outer convective envelopes which generate acoustic noise that may excite resonant modes, often a very large number.

This paper is a discussion of the possibilities for observing these stars with ground based techniques, and also a statement about what can not be done from the ground.

Type
VIII. Asteroseismology: observation
Information
International Astronomical Union Colloquium , Volume 137: Inside the Stars , 1993 , pp. 679 - 692
Copyright
Copyright © Astronomical Society of the Pacific 1993

References

Andersen, T., Dybdal, S., Frandsen, S. and Reiz, A. 1992, The NOT Newsletter 6 (VELUX)Google Scholar
Appourchaux, T. 1991, A&A 222, 361 Google Scholar
Baade, D. 1991, In Rev. in Mod. Astr. 4, Springer,Google Scholar
Baudrand, J. and Böhm, T. 1992, A&A accepted (MUSICOS)Google Scholar
Belmonte, J.A., Peres Hernández, F. and RocaCortes, T. 1990, A&A 331, 383 Google Scholar
Brown, T.M. 1990a, The Sun and Asteroseismology, preprintGoogle Scholar
Brown, T.M. 1990b, in CCDs in Astronomy, Tuscon Arizona, ASP Conf. Ser. 8,335 Google Scholar
Brown, T.M., Gilliland, R.L., Noyes, R.W. & Ramsey, L.W. 1991, ApJ 368, 599 Google Scholar
Connes, P. 1985, Astrophys. Sp. Sci. 110, 211 Google Scholar
Frandsen, S. 1987, A&A 181, 289 Google Scholar
Frandsen, S., Douglas, N., Butcher, H. 1992, A&A, submittedGoogle Scholar
Gilliland, R., Brown, T.M., Duncan, D.K., Suntzeff, N.B., Lockwood, G.W., Thompson, D.T., Schild, R.E., Jeffrey, W.A. and Penprase, B.E. 1991, AJ 101, 541 Google Scholar
Gilliland, R. and Brown, T.M. 1991, Observing guide: M67 Stellar Oscillations Network Campagin, Private communicationGoogle Scholar
Innis, J.L., Isaak, G.R., Speake, C.C., Brazier, R.I. & Williams, H.K. 1990 preprintGoogle Scholar
Kjeldsen, H. and Frandsen, S. 1992 PASP, acceptedGoogle Scholar
Libbrecht, K.G. 1988, “The Impact of very high S/N Spectroscopy in Stellar Physics”, IAU Symp. 132, eds. Cayrel de Strobel, G.,& Spite, M., 83 Google Scholar
Mantegazza, L., Poretti, E., Antonello, E., Riboni, E. and Zerbi, F. 1992, These ProceedingsGoogle Scholar
Michel, E. and Baglin, A. 1991, Adv. Space Res. 11, 70 Google Scholar
Nather, R.E., Winget, D.E., Clemens, J.C., Hansen, C.J. and Hine, B.P. 1990, ApJ 361, 309 (WET)Google Scholar
Noyes, R.W., Brown, T.M., Horner, S., Korzennik, S. and Nisenson, P. 1992, These Proceedings (AFOE)Google Scholar
Pottasch, E.M., Butcher, H.R. & van Hoesel, F.H.J. 1992, A&A, acceptedGoogle Scholar
PRISMA, Report on the Assessment Study, January 1991, ESA SCI(91) 5 Google Scholar
Reay, N.K., Ring, J., Pietraszewski, K.A.R.B., Bell, C.R. & Leeper, M. 1986, SPIE Vol 627 Instrumentation in Astronomy VI, 27 CrossRefGoogle Scholar
Schmider, F.-X., Fossat, E., Grec, G. & Gelly, B. 1988, Proc. Symp. Seismology of the Sun and the Sun-like Stars, Tenerife, Spain, ESA SP 286, 605Google Scholar
Schmider, F.-X. 1989, Thesis, Universite de Paris VII Google Scholar
Winget, D.E. and the WET consortium (27 authors) 1990, ApJ 357, 630 CrossRefGoogle Scholar