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H alpha spectropolarimetry of RY Tauri and PX Vulpeculae (Research Note)
(EDP SCIENCES S A, 2009)
Aims. To detect line effects using spectropolarimetry in order to find evidence of rotating disks and their respective symmetry axes in T Tauri stars. Methods. We used the IAGPOL imaging polarimeter along with the ...
ALMA Observations of polarization from dust scattering in the IM lup protoplanetary disk
(IOP Publishing, 2018-06-10)
We present 870 mu m ALMA observations of polarized dust emission toward the Class II protoplanetary disk IM. Lup. We find that the orientation of the polarized emission is along the minor axis of the disk, and that the ...
The Origins of Young Stars in the Direction of the Leading Arm of the Magellanic Stream: Abundances, Kinematics, and Orbits
(Institute of Physics Publishing, 2019)
We explore the origins of the young B-type stars found by Casetti-Dinescu et al. at the outskirts of the Milky Way disk in the sky region of the Leading Arm of the Magellanic Stream. High-resolution spectroscopic observations ...
Be star disc characteristics near the central object
(EDP Sciences, 2007-07)
Context. A recent analysis of visual Fell emission lines of 17 classic Be stars using the self-absorption curve (SAC) method revealed that these lines are optically thick and that they form in circumstellar disc (CD) regions ...
Evidence for reduced magnetic braking in polars from binary population models
(Royal Astronomical Society, 2020)
We present the first population synthesis of synchronous magnetic cataclysmic variables, called polars, taking into account the effect of the white dwarf (WD) magnetic field on angular momentum loss. We implemented the ...
Exploring the origin of magnetic fields in massive stars. II. New magnetic field measurements in cluster and field stars
(EDP Sciences, 2013-03)
Context. Theories on the origin of magnetic fields in massive stars
remain poorly developed, because the properties of their magnetic field
as function of stellar parameters could not yet be investigated.
Additional ...
Spatially resolved magnetic field structure in the disk of a T Tauri star
(Nature Publishing Group, 2014-10)
Magnetic fields in accretion disks play a dominant role during the star formation process but have hitherto been observationally poorly constrained. Field strengths have been inferred on T Tauri stars themselves and possibly ...
On the determination of the rotational oblateness of Achernar
(UNIV CHICAGO PRESS, 2008)
The recent interferometric study of Achernar, leading to the conclusion that its geometrical oblateness cannot be explained by the Roche approximation, has stirred substantial interest in the community, in view of its ...
Near infrared polarimetry of a sample of YSOs
(EDP SCIENCES S A, 2009)
Aims. Our goal is to study the physical properties of the circumstellar environment of young stellar objetcs (YSOs). In particular, the determination of the scattering mechanism can help us to constrain the optical depth ...