High precision velocity observations of Arcturus using the 7699 A line of potassium

Bibcode
1988ESASP.286..569I
Innis, J. L.; Isaak, G. R.; Brazier, R. I.; Belmonte, Juan A.; Palle, Pere L.; Roca Cortés, Teodoro; Jones, A. R.
Bibliographical reference

In ESA, Seismology of the Sun and Sun-Like Stars p 569-573 (SEE N89-25819 19-92)

Advertised on:
12
1988
Number of authors
7
IAC number of authors
0
Citations
12
Refereed citations
6
Description
The K giant Arcturus (alpha Boo) was observed with the Birmingham double magneto-optical filter spectrometer using the GHRIL facility at the Nasmyth focus of the 4.2 m William Herschel Telescope of the Observatorio del Roque de los Muchachos in 1988 April to May. Approximately 80 hr of data were obtained over a 2 week interval. Analysis of the data shows the presence of the large (200 m/sec) amplitude velocity variation reported earlier by other observers. However, this more extensive data set strongly suggests that this variation is not singly periodic, as was previously indicated. The nature of this variation, and the implications for stellar seismology, are considered.
Type
Non-refereed
Giant stars
K stars
Stellar oscillations

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