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Analytical solutions for radiation-driven winds in massive stars: I. the fast regime
(Iop Publishing, 2014-10)
Accurate mass-loss rate estimates are crucial keys in the study of wind properties of massive stars and for testing different evolutionary scenarios. From a theoretical point of view, this implies solving a complex set of ...
Probing the ejecta of evolved massive stars in transition: A VLT/SINFONI K-band survey
(Edp Sciences, 2013-10)
Massive evolved stars in transition phases, such as Luminous Blue Variables (LBVs), B[e] Supergiants (B[e]SGs), and Yellow Hypergiants (YHGs), are not well understood, and yet crucial steps in determining accurate stellar ...
Apsidal motion in massive close binary systems. I. HD 165052 an extreme case?
(Oxford University Press, 2013-06)
We present a new set of radial-velocity measurements of the spectroscopic binary HD 165052 obtained by disentangling of high-resolution optical spectra. The longitude of the periastron (60 +- 2 degrees) shows a variation ...
Asteroseismological study of massive ZZ Ceti stars with fully evolutionary models
(Iop Publishing, 2013-12)
We present the first asteroseismological study for 42 massive ZZ Ceti stars based on a large set of fully evolutionary carbon-oxygen core DA white dwarf models characterized by a detailed and consistent chemical inner ...
A CGPS view of the ISM towards HD 192281
(Astronomical Society of the Pacific, 2010-12)
Massive stars are known to have a profound impact on their surroundings through their high ionizing radiation, their strong stellar winds, and their eventual final explosion as supernovae. Within the area surveyed by ...
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 ...
ON THE NATURE OF THE PROTOTYPE LUMINOUS BLUE VARIABLE AG CARINAE. II. WITNESSING A MASSIVE STAR EVOLVING CLOSE TO THE EDDINGTON AND BISTABILITY LIMITS
(IOP PUBLISHING LTD, 2011)
We show that the significantly different effective temperatures (T(eff)) achieved by the luminous blue variable AG Carinae during the consecutive visual minima of 1985-1990 (T(eff) similar or equal to 22,800 K) and 2000-2001 ...
A search for ionized jets towards massive young stellar objects
(Oxford University Press, 2016)
Radio continuum observations using the Australia telescope compact array at 5.5, 9.0, 17.0 and 22.8 GHz have detected free-free emission associated with 45 of 49 massive young stellar objects and H ii regions. Of these, ...
Gamma-ray emission from massive star forming regions
(World Scientific, 2008-09)
Recent radio observations support a picture for star formation where there is accretion of matter onto a central protostar with the ejection of molecular outflows that can affect the surrounding medium. The impact of a ...
Evolution of random initial magnetic fields in stably stratified and barotropic stars
(Oxford, 2022)
Long-lived magnetic fields are known to exist in upper main-sequence stars, white dwarfs, and neutron stars. In order to explore
possible equilibrium configurations of the magnetic field inside these stars, we have performed ...