The pulsation modes of CO AUR

Details The pulsation modes of CO AUR The pulsation modes of CO AUR

Jul 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...181...34b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 181, no. 1, July 1987, p. 34-40. SNSF-supported research.

Astronomy and Astrophysics

Astrophysics

13

Auriga Constellation, Cepheid Variables, Stellar Oscillations, Fourier Analysis, Harmonics, Radial Velocity, Size Determination, Stellar Spectrophotometry

Scientific paper

Photoelectric measurements in radial velocity (spectrophotometer CORAVEL) and photometry (Geneva system) of the peculiar double-mode cepheid CO Aur, confirm the two periods P1 = 1d.78 and P2 = 1d.43. A mean radius of 43±13 R_sun; is derived by applying the Baade-Wesselink method. A complete discussion of the pulsation is given: CO Aur is radially pulsating in two overtone modes, probably the 1st and 2nd ones.

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