Fossil magnetic fields in intermediate-mass and massive stars

Abstract

A small fraction of the population of intermediate-mass and massive stars host strong and stable magnetic fields organised on large scales. These fields are believed to be remnants of star formation. It is however not clear how such fossil fields have been shaped during their formation and subsequent evolution. We report recent and ongoing studies on the magnetic properties of pre-main sequence stars and main sequence binaries, allowing us to make progress in this field.

arXiv commentTo appear in the proceedings for the Astrofluid conference in honor of Jean-Paul Zahn (Paris, June 2016) ; 11 pages, 2 figures

References in corpus (36)

• Magnetic fields of non-degenerate stars
• Weak magnetic fields in Ap/Bp stars: Evidence for a dipole field lower limit and a tentative interpretation of the magnetic dichotomy
• A high-resolution spectropolarimetric survey of Herbig Ae/Be stars - I. Observations and measurements
• The MiMeS Survey of Magnetism in Massive Stars: Introduction and overview
• The MiMeS survey of magnetism in massive stars: Magnetic analysis of the O-type stars
• Formation of massive stars by growing accretion rate
• Searching for links between magnetic fields and stellar evolution. II. The evolution of magnetic fields as revealed by observations of Ap stars in open clusters and associations
• Protostellar collapse: radiative and magnetic feedbacks on small scale fragmentation
• Searching for links between magnetic fields and stellar evolution III. Measurement of magnetic fields in open cluster Ap stars with ESPaDOnS
• On the Stability of Non Force-Free Magnetic Equilibria in Stars
• B fields in OB stars (BOB): low-resolution FORS2 spectropolarimetry of the first sample of 50 massive stars
• The Magnetic Fields at the Surface of Active Single G-K Giants
• Detection of a weak surface magnetic field on Sirius A: are all tepid stars magnetic ?
• Multiplicity among chemically peculiar stars II. Cool magnetic Ap stars
• NGC 1624-2: A slowly rotating, X-ray luminous Of?cp star with an extraordinarily strong magnetic field
• B fields in OB stars (BOB): Concluding the FORS2 observing campaign
• HR 5907: Discovery of the most rapidly rotating magnetic B-type star by the MiMeS Collaboration
• Magnetism and binarity of the Herbig Ae star V380 Ori
• Discovery of a magnetic field in the rapidly-rotating O-type secondary of the colliding-wind binary HD 47129 (Plaskett's star)
• Detection of ultra-weak magnetic fields in Am stars: beta UMa and theta Leo
• EK Eridani: the tip of the iceberg of giants which have evolved from magnetic Ap stars
• Evidence of magnetic field decay in massive main-sequence stars
• Stokes $IQUV$ Magnetic Doppler Imaging of Ap stars II: Next Generation Magnetic Doppler Imaging of ${\alpha }^2$ CVn
• Detection of magnetic fields in both B-type components of the $\epsilon$ Lupi system: a new constraint on the origin of fossil fields?
• Rotation, spectral variability, magnetic geometry and magnetosphere of the Of?p star CPD -28 2561
• Discovery of a very weak magnetic field on the Am star Alhena
• A dominant magnetic dipole for the evolved Ap star candidate EK Eridani
• The magnetic field topology and chemical abundance distributions of the Ap star HD 32633
• On the fragmentation boundary in magnetised self-gravitating discs
• Three-dimensional magnetic and abundance mapping of the cool Ap star HD 24712 II. Two-dimensional Magnetic Doppler Imaging in all four Stokes parameters
• The magnetic field of the double-lined spectroscopic binary system HD 5550
• Orbital parameters, chemical composition, and magnetic field of the Ap binary HD 98088
• Magnetic Doppler imaging of the chemically peculiar star HD 125248
• Evolution of a magnetic field in a differentially rotating radiative zone
• The BinaMIcS project: binarity and magnetism
• 14 Ceti: A probable Ap-star-descendant entering the Hertzsprung gap

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• Simulations of the line-driven instability in magnetic hot star winds
• OGLE-BLAP-001 and ZGP-BLAP-08: two possible magnetic blue large-amplitude pulsators
• Shaping core dynamos in A-type stars: The role of dipolar fossil fields
• Unveiling the Variability and Chemical Composition of AL Col