Photometry of red variables in 47 Tucanae

Details Photometry of red variables in 47 Tucanae Photometry of red variables in 47 Tucanae

May 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982mnras.199..715f&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 199, May 1982, p. 715-723.

Astronomy and Astrophysics

Astronomy

19

Red Giant Stars, Stellar Spectrophotometry, Variable Stars, Astronomical Photometry, Globular Clusters, Light Curve, Mira Variables, Semiregular Variable Stars, Stellar Luminosity, Stellar Oscillations, Stellar Temperature, Tables (Data)

Scientific paper

Multicolor photometry is used to derive the period, bolometric luminosity, effective temperature and pulsation constant for a number of known and suspected variables in the globular cluster 47 Tuc. Values of the pulsation constant indicate an overtone mode of a pulsation for both the semi-regular and Mira variables, and there is evidence that V4 undergoes a switching between fundamental and first overtone modes. Variables V5 and V12 have time-varying periods, although the cause of the variation cannot be determined from present data.

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