Detection of ultra-weak magnetic fields in Am stars: β Ursae Majoris and θ Leonis
International audience Context. An extremely weak circularly polarized signature was recently discovered in spectral lines of the chemically peculiar Am star Sirius A. A weak surface magnetic field was proposed to account for the observed polarized signal, but the shape of the phase-averaged signatu...
Published in: | Astronomy & Astrophysics |
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Main Authors: | , , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2016
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Subjects: | |
Online Access: | https://hal.science/hal-02320325 https://doi.org/10.1051/0004-6361/201527556 |