22 September 2025
ESO Headquarters
Europe/Berlin timezone

Magnetospheric accretion onto Herbig Ae/Be stars

22 Sept 2025, 09:45
15m
Eridanus Auditorium (ESO Headquarters)

Eridanus Auditorium

ESO Headquarters

Karl-Schwarzschild-Straße 2 85748 Garching bei München

Speaker

Markus Schöller (European Southern Observatory)

Description

Herbig Ae/Be stars are surrounded by active accretion disks, as evidenced from excess emission seen in various wavelength regions. From studies of the Zeeman effect in polarimetric spectra of these PMS stars, it is clear that HAeBes host dipolar magnetic fields, which are about a magnitude weaker than those in their lower mass counterparts, the T Tauri stars.

While these weaker magnetic fields have generally been ignored in the accretion processes of HAeBes, there is evidence for magnetospheric interaction between the the disk and the magnetic star. To understand the complex magnetospheric processes taking place in Herbig Ae/Be stars, it is important to characterize their magnetospheres, which extend outward into the surrounding environment.

In my talk, I will present our results from recent studies of magnetic fields and the magnetospheric structures in a few Herbig Ae/Be stars.

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Authors

Markus Schöller (European Southern Observatory) Dr Silva Järvinen (AIP) Dr Swetlana Hubrig (AIP)

Presentation materials

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