Subaru Seminars



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The Subaru Seminar is usually held in Room 104 of the Hilo Base Facility, adjacent to the main lobby. Everyone is welcome to attend. If you are interested in giving a seminar, please contact Masayuki Akiyama by email.

October 5, Tuesday at 13:30pm

"Polarimetry of binary stars: 101 uses of polarimetry for the study of binary stars"

Nadine Manset (CFHT)

Astronomical polarimetry is a powerful technique that can potentially provide physical information sometimes difficult or impossible to obtain by any other type of observation. Almost every type of binary star can benefit from polarimetric observations: pre-main-sequence objects, close or contact binaries, mass-transfer systems, cataclysmic variables, eclipsing binaries, etc. In these systems, polarimetry can help determine the geometry of the circumstellar or circumbinary matter distribution, yield information on asymmetries and anisotropies in these systems, detect magnetic fields, map starspots, establish orbital parameters or stars' sizes. The orbital inclination is a very important piece of information for a binary system because it can lead to the determination of the components' masses, a fundamental parameter that determines a star's structure and evolution. This presentation will illustrate the usefulness of polarimetric techniques for the study of binary stars.

Seminars are also held at JAC, CFHT, and IfA.

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