Radial-velocity Searches for Planets Around Active Stars

This thesis develops new and powerful methods for identifying planetary signals in the presence of "noise" generated by stellar activity, and explores the physical origin of stellar intrinsic variability, using unique observations of the Sun seen as a star. In particular, it establishes th...

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Detalles Bibliográficos
Clasificación:Libro Electrónico
Autor principal: Haywood, Raphaëlle D. (Autor)
Autor Corporativo: SpringerLink (Online service)
Formato: Electrónico eBook
Idioma:Inglés
Publicado: Cham : Springer International Publishing : Imprint: Springer, 2016.
Edición:1st ed. 2016.
Colección:Springer Theses, Recognizing Outstanding Ph.D. Research,
Temas:
Astronomy-Observations.
Astrophysics.
Solar system.
Astrobiology.
Astronomy, Observations and Techniques.
Space Physics.
Acceso en línea:Texto Completo

MARC

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245 1 0 |a Radial-velocity Searches for Planets Around Active Stars  |h [electronic resource] /  |c by Raphaëlle D. Haywood. 
250 |a 1st ed. 2016. 
264 1 |a Cham :  |b Springer International Publishing :  |b Imprint: Springer,  |c 2016. 
300 |a XV, 140 p. 60 illus., 57 illus. in color.  |b online resource. 
336 |a text  |b txt  |2 rdacontent 
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490 1 |a Springer Theses, Recognizing Outstanding Ph.D. Research,  |x 2190-5061 
505 0 |a Introduction: the Hunt for Extra-solar Planets -- A Toolkit to Detect Planets Around Active Stars -- Application to Observations of Planet-hosting Stars -- An Exploration into the Radial-velocity Variability of the Sun -- Conclusion. 
520 |a This thesis develops new and powerful methods for identifying planetary signals in the presence of "noise" generated by stellar activity, and explores the physical origin of stellar intrinsic variability, using unique observations of the Sun seen as a star. In particular, it establishes that the intrinsic stellar radial-velocity variations mainly arise from suppression of photospheric convection by magnetic fields. With the advent of powerful telescopes and instruments we are now on the verge of discovering real Earth twins in orbit around other stars. The intrinsic variability of the host stars themselves, however, currently remains the main obstacle to determining the masses of such small planets. The methods developed here combine Gaussian-process regression for modeling the correlated signals arising from evolving active regions on a rotating star, and Bayesian model selection methods for distinguishing genuine planetary signals from false positives produced by stellar magnetic activity. The findings of this thesis represent a significant step towards determining the masses of potentially habitable planets orbiting Sun-like stars. . 
650 0 |a Astronomy-Observations. 
650 0 |a Astrophysics. 
650 0 |a Solar system. 
650 0 |a Astrobiology. 
650 1 4 |a Astronomy, Observations and Techniques. 
650 2 4 |a Astrophysics. 
650 2 4 |a Space Physics. 
650 2 4 |a Astrobiology. 
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776 0 8 |i Printed edition:  |z 9783319412726 
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776 0 8 |i Printed edition:  |z 9783319823102 
830 0 |a Springer Theses, Recognizing Outstanding Ph.D. Research,  |x 2190-5061 
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950 |a Physics and Astronomy (SpringerNature-11651) 
950 |a Physics and Astronomy (R0) (SpringerNature-43715) 

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