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Doppler Imaging of Stellar Oscillations: Multi-Site Observations of Epsilon Cephei

Published online by Cambridge University Press:  12 April 2016

E. J. Kennelly ,
T. M. Brown ,
P. Ehrenfreund ,
B. Foing ,
J. Hao ,
S. Horner ,
S. Korzennik ,
P. Nisenson ,
R. Noyes  and
P. Sonnentrucker
E. J. Kennelly*
Affiliation:
Harvard-Smithsonian Center for Astrophysics, Cambridge MA
T. M. Brown
Affiliation:
High Altitude Observatory (NCAR), Boulder, CO
P. Ehrenfreund
Affiliation:
Leiden Obervatory, The Netherlands
B. Foing
Affiliation:
ESTEC, 2200 AG Noordwijk, The Netherlands
J. Hao
Affiliation:
Beijing Astronomical Observatory, Beijing, China
S. Horner
Affiliation:
Pennsylvania State University, University Park, PA
S. Korzennik
Affiliation:
Harvard-Smithsonian Center for Astrophysics, Cambridge MA
P. Nisenson
Affiliation:
Harvard-Smithsonian Center for Astrophysics, Cambridge MA
R. Noyes
Affiliation:
Harvard-Smithsonian Center for Astrophysics, Cambridge MA
P. Sonnentrucker
Affiliation:
ESA Space Science Department, The Netherlands
*
1Currently at Atmospheric and Environmental Research, Inc., Cambridge, MA.

Abstract

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We investigate the oscillation properties of є Cep using a series of specialized techniques designed to extract and analyze time variations in absorption line profiles. To obtain the necessary temporal coverage for this investigation, multi-site observations were collected at 3 sites (China, France, Arizona) all equipped with high-resolution échelle spectrographs. From these observations, we find evidence for a very rich spectrum of modes in є Cep.

Type
Part 6. Stellar Rotation, Doppler Imaging
Information
International Astronomical Union Colloquium , Volume 170: Precise Stellar Radial Velocities , 1999 , pp. 264 - 267
Copyright
Copyright © Astronomical Society of the Pacific 1999

References

Kennelly, E.J., Brown, T.M., Kotak, R., Sigut, T.A.A., Homer, S.D., Korzennik, S.G., Nisenson, P., Noyes, R.W., Walker, A., & Yang, S. 1998, ApJ, 495, 440 Google Scholar