Results 11 to 20 of about 114,632 (282)

Rotation and stellar evolution

open access: yesEPJ Web of Conferences, 2013
The effects of rotation on the evolution and properties of low-mass stars are first discussed from the pre-main sequence to the red giant phase. We then briefly indicate how some observational constraints available for these stars can help us progress in
Eggenberger P.
doaj   +1 more source

Rotation periods of exoplanet host stars [PDF]

open access: yes, 2010
The stellar rotation periods of ten exoplanet host stars have been determined using newly analysed Ca II H & K flux records from Mount Wilson Observatory and Stromgren b, y photometric measurements from Tennessee State University's automatic photometric ...
Baliunas   +67 more
core   +3 more sources

Towards age/rotation/magnetic activity relation with seismology

open access: yesEPJ Web of Conferences, 2015
The knowledge of stellar ages directly impacts the characterization of a planetary system as it puts strong constraints on the moment when the system was born. Unfortunately, the determination of precise stellar ages is a very difficult task.
Mathur Savita
doaj   +1 more source

The evolution of single B-type stars with a large angular momentum content [PDF]

open access: yes, 2014
The database of intermediate mass rotating stellar models presented in the past years by the Geneva Stellar Evolution Group can be used to build synthetic stellar populations that fully account for the effects of stellar rotation.
Granada, Anahí, Haemmerlé, Lionel
core   +1 more source

Supernovae from rotating stars

open access: yes, 2017
The present paper discusses the main physical effects produced by stellar rotation on presupernovae, as well as observations which confirm these effects and their consequences for presupernova models.
A Gal-Yam   +52 more
core   +1 more source

Determination of the position angle of stellar spin axes [PDF]

open access: yes, 2014
Measuring the stellar position angle provides valuable information on binary stellar formation or stellar spin axis evolution. We aim to develop a method for determining the absolute stellar position angle using spectro-astrometric analysis of high ...
Lesage, Anna-Lea, Wiedemann, Guenter
core   +3 more sources

The Effect of Stellar Rotation on Colour-Magnitude Diagrams: On the apparent presence of multiple populations in intermediate age stellar clusters

open access: yes, 2009
A significant number of intermediate age clusters (1-2 Gyr) in the Magellanic Clouds appear to have multiple stellar populations within them, derived from bi-modal or extended main sequence turn offs. If this is interpreted as an age spread, the multiple
Bekki   +39 more
core   +1 more source

Observable Signatures of Classical T Tauri Stars Accreting in an Unstable Regime

open access: yesEPJ Web of Conferences, 2014
We discuss key observational signatures of Classical T Tauri stars (CTTSs) accreting through Rayleigh-Taylor instability, which occurs at the interface between an accretion disk and a stellar magnetosphere.
Kurosawa Ryuichi, Romanova M. M.
doaj   +1 more source

Implications of the generation of internal gravity waves by penetrative convection for the internal rotation evolution of low-mass stars

open access: yesEPJ Web of Conferences, 2017
Due to the space-borne missions CoRoT and Kepler, noteworthy breakthroughs have been made in our understanding of stellar evolution, and in particular about the angular momentum redistribution in stellar interiors. Indeed, the high-precision seismic data
Pinçon Charly   +2 more
doaj   +1 more source

Simulating the Role of Stellar Rotation in the Spectroscopic Effects of Differential Limb Magnification [PDF]

open access: yes, 2013
Finite-source effects of gravitationally microlensed stars have been well discussed in the literature, but the role that stellar rotation plays has been neglected.
Albrow, Michael D., Stevens, Adam R. H.
core   +1 more source

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