Observations of Hipparcos short-period red giant stars

Details Observations of Hipparcos short-period red giant stars Observations of Hipparcos short-period red giant stars

Sep 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002mnras.335..223k&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 335, Issue 1, pp. 223-232.

Other

6

Stars: Variables: Other

Scientific paper

Optical UBV(RI)C and infrared JHK photometry is presented of a small sample of giant stars with short periods in the Hipparcos catalogue. Observations were limited, but were sufficient to rule out most of the Hipparcos periods. Radial velocity measurement were also made for a few stars, over six successive nights. Low-level variability was detected in a few stars. It is argued that in most cases the brightness variations are primarily due to temperature changes. These findings show that high-overtone pulsations in M giant stars occur, if at all, in a far more limited number of stars than proposed in the authors' previous discussion of the Hipparcos data alone.

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