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The Angular Diameter and Fundamental Parameters of Sirius A

Tuthill, P. G.; Davis, J.; Ireland, M. J. +3 more

The Sydney University Stellar Interferometer (SUSI) has been used to make a new determination of the angular diameter of Sirius A. The observations were made at an effective wavelength of 694.1nm and the new value for the limb-darkened angular diameter is 6.048+/-0.040mas (+/-0.66%). This new result is compared with previous measurements and is fo…

High-resolution Spectroscopy and Spectropolarimetry of Some Late F- / Early G-type Sun-like Stars as Targets for Zeeman Doppler Imaging

Hart, R.; Burton, D.; Marsden, S. C. +4 more

High-resolution spectroscopy and spectropolarimetry have been undertaken at the Anglo-Australian Telescope in order to identify suitable targets for magnetic studies of young Sun-like stars, for the proxy study of early solar evolution. This study involved the investigation of some variable late F- / early G-type Sun-like stars originally identifi…