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Acoustic oscillations in the K2III star arcturus (1990)

Belmonte, J. A. ; Jones, A. R. ; Pallé, P. L. ; [et al.]

Springer

Astrophysics and space science 169 (1990), S. 77-84

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ISSN: 1572-946X

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract Simultaneous spectrometric and photometric observations have been performed, on the red giant star Arcturus (α Boo), in a search for radial velocity or luminosity variations related to global oscillations of the stellar structure. From a preliminary analysis of the spectrometric data, several frequencies have been discovered in the range from 1 to 50 μHz, the highest amplitude being of ∼60 ms−1 at 4.3 μHz. From the analysis of the photometric data, slight evidence of this variation has been found, yielding a value of ΔV/Δm=48 km s−1 mag−1.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00640689

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