Search for rapid oscillations in the Northern AP stars HD62140, HD81009 and HD22374

Details Search for rapid oscillations in the Northern AP stars HD62140, HD81009 and HD22374 Search for rapid oscillations in the Northern AP stars HD62140, HD81009 and HD22374

Dec 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988esasp.286..609b&link_type=abstract

In ESA, Seismology of the Sun and Sun-Like Stars p 609-611 (SEE N89-25819 19-92)

Physics

2

Stellar Luminosity, Stellar Motions, Stellar Oscillations, Stellar Radiation, Stellar Spectrophotometry, Harmonic Analysis, Imaging Techniques, Periodic Variations, Stellar Physics

Scientific paper

High-speed photometric observations were performed of the Ap stars HD62140 (49 Cam), HD81009, and HD22374 for more than 60 hr in Oct. and Dec. 1986. Photometric measurements in the B band were reduced and the residuals obtained were subjected to a harmonic analysis, searching for periodicities in the range of a few minutes to 2 hr. There is evidence that the star 49 Cam is oscillating; HD81009 and HD22374 were observed in order to confirm traces of oscillation present in earlier observations, however, these possible oscillations did not repeat in the new data.

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