Stellar oscillations - I - The adiabatic case [PDF]
EAS Publications Series, 2015 This lecture on adiabatic oscillations is intended to present the basis of asteroseismology and to serve as an introduction for other lectures of the EES 2014. It also exposes the state-of-the-art of solar-like oscillation analysis, as revealed by the space missions CoRoT and Kepler.
openaire +2 more sources
Observational evidence for a correlation between macroturbulent broadening and line-profile variations in OB Supergiants [PDF]
, 2010 The spectra of O and B supergiants are known to be affected by a significant form of extra line broadening (usually referred to as macroturbulence) in addition to that produced by stellar rotation.
Aerts, C. +5 more
core +3 more sources
Detection of stellar oscillations in HWVir
Open Astronomy, 2016 We present our analysis of K2 observations of the binary system, HWVir. We processed the raw Kepler data and used Fourier analysis to search for periodic signals that could be associated with pulsations.
Baran Andrzej S. +2 more
doaj +1 more source
Stellar hydrodynamics caught in the act: Asteroseismology with CoRoT and Kepler
, 2011 Asteroseismic investigations, particularly based on data on stellar oscillations from the CoRoT and Kepler space missions, are providing unique possibilities for investigating the properties of stellar interiors.
Auvergne +58 more
core +1 more source
Motion of a rigid body in a tidal field: an application to elliptical galaxies in clusters [PDF]
, 1997 We investigate the motion, near the equilibrium configurations, of an initially spinless rigid body subject to an external tidal field. Two cases are considered: when the center of mass of the body is at rest at the equilibrium point of the field ...
Ciotti, L., Giampieri, G.
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CoRoT measures solar-like oscillations and granulation in stars hotter than the Sun
, 2008 Oscillations of the Sun have been used to understand its interior structure. The extension of similar studies to more distant stars has raised many difficulties despite the strong efforts of the international community over the past decades.
A. Possenti +11 more
core +2 more sources
Three evolutionary paths for magnetar oscillations [PDF]
, 2014 Quasi-periodic oscillations have been seen in the light curves following several magnetar giant flares. These oscillations are of great interest as they probably provide our first ever view of the normal modes of oscillation of neutron stars.
Glampedakis, K., Jones, D. I.
core +1 more source
Magnetic Perturbations to Stellar Oscillation Eigenfrequencies [PDF]
Symposium - International Astronomical Union, 1988 Magnetic fields contribute to the splitting of the degeneracy of modes of like order and degree. The splitting is estimated for some simple hypothetical toroidal magnetic field configurations in the sun, and the results are compared with previous asymptotic estimates.
D.O. Gough, M.J. Thompson
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Asteroseismic Investigation of Known Planet Hosts in the Kepler Field
, 2009 In addition to its great potential for characterizing extra-solar planetary systems the Kepler mission is providing unique data on stellar oscillations.
Bakos +22 more
core +1 more source
Hijacking emergency granulopoiesis: Neutrophil ontogeny and reprogramming in cancer
Molecular Oncology, EarlyView.Neutrophils are highly plastic innate immune cells; their functions in cancer extend beyond the tumour microenvironment. This Review summarises current understanding of neutrophil maturation and heterogeneity and highlights tumour‐induced granulopoiesis as a systemic programme that expands immature, immunosuppressive neutrophils via tumour‐derived ...
Gabriela Marinescu, Yi Feng
wiley +1 more source