Combined study of the large-scale → magnetic field
(→ magnetometry) and
→ stellar pulsations
(→ asteroseismology).
Magneto-asteroseismology provides strong
complementary diagnostics suitable for detailed stellar
modeling and permits the determination of the
→ internal structure
and conditions within → magnetic massive
→ pulsators,
for example the effect of magnetism on
→ mixing processes.
More specifically, asteroseismology yields information on the
→ density, → composition,
and → chemical mixing in multiple internal layers
(depending on the number of studied frequencies). Additionally, when
rotationally split pulsation modes are observed, the internal rotation
profile can be retrieved. From magnetometry surface properties are
determined, related to the → chemical composition,
including → starspots, and
the magnetic field, such as its geometry, obliquity, and
strength. Magnetic studies also provide constraints about the
→ stellar wind geometry and the
→ circumstellar environment. Moreover, the
stellar → rotation period
period and the → angle of inclination
toward the
observer are also retrieved (Buysschaert et al., 2017, astro-ph/1709.02619).
See also: → magneto-; → asteroseismology.
