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Multiplexed interferometric stellar oscillation spectrometry - MISOS

Published online by Cambridge University Press:  03 August 2017

K.A.R.B. Pietraszewski ,
C.R. Bell ,
J. Ring ,
N.K. Reay  and
M. Leeper
K.A.R.B. Pietraszewski
Affiliation:
Imperial College, Prince Consort Road, London, S.W.7 2BZ
C.R. Bell
Affiliation:
Imperial College, Prince Consort Road, London, S.W.7 2BZ
J. Ring
Affiliation:
Imperial College, Prince Consort Road, London, S.W.7 2BZ
N.K. Reay
Affiliation:
Imperial College, Prince Consort Road, London, S.W.7 2BZ
M. Leeper
Affiliation:
Imperial College, Prince Consort Road, London, S.W.7 2BZ

Abstract

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Interferometric spectrometry techniques for measuring stellar oscillations have been developed at Imperial College, resulting in two separate interferometers, the Michelson and the Fabry-Perot based instruments. They have both been used on large telescopes; the Michelson instrument to search for oscillations in solar-type stars and the Fabry-Perot instrument to measure oscillations in δScuti-type stars. So far there has been only marginal evidence for solar-type oscillations, including our observations of εCyg with ~1ms−1 precision. In order to increase the significance of future observations we are currently improving both instruments and aim to achieve a ten-fold increase in precision, i.e. ~10cms−1, by using up to 100 separate spectral lines simultaneously. Such an improvement will allow us to continue the search for solar-type oscillations.

Type
Chapter 9: Techniques for Observing Stellar Oscillations
Information
Symposium - International Astronomical Union , Volume 123: Advances In Hello- and Asteroseismology , 1988 , pp. 517 - 520
Copyright
Copyright © Reidel 1988 

References

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