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Related papers: Timing by Stellar Pulsations as an Exoplanet Disco…

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In this paper we demonstrate how pulsating white dwarfs can be used as an astrophysical laboratory for empirically constraining convection in these stars. We do this using a technique for fitting observed non-sinusoidal light curves, which…

Astrophysics · Physics 2009-11-13 M. H. Montgomery

Extra-solar planets can be efficiently detected in gravitational microlensing events of high magnification. High accuracy photometry is required over a short, well-defined time interval only, of order 10-30 hours. Most planets orbiting the…

Astrophysics · Physics 2007-05-23 Nicholas J. Rattenbury , Ian A. Bond , Jovan Skuljan , Phil Yock

We describe three useful applications of asteroseismology in the context of exoplanet science: (1) the detailed characterisation of exoplanet host stars; (2) the measurement of stellar inclinations; and (3) the determination of orbital…

The evolution of exoplanetary systems with a close-in planet is ruled by the tides mutually raised on the two bodies and by the magnetic braking of the host star. This paper deals with consequences of this evolution and some features that…

Earth and Planetary Astrophysics · Physics 2023-07-05 S. Ferraz-Mello , C. Beaugé

The detection of exoplanets using any method is prone to confusion due to the intrinsic variability of the host star. We investigate the effect of cool starspots on the detectability of the exoplanets around solar-like stars using the…

Earth and Planetary Astrophysics · Physics 2015-06-23 H. Korhonen , J. M. Andersen , N. Piskunov , T. Hackman , D. Juncher , S. P. Jarvinen , U. G. Joergensen

Gravitational waves perturb the paths of photons, impacting both the time-of-flight and the arrival direction of light from stars. Pulsar timing arrays can detect gravitational waves by measuring the variations in the time of flight of…

General Relativity and Quantum Cosmology · Physics 2018-07-18 Logan O'Beirne , Neil J. Cornish

Cool main-sequence, sub-giant and red-giant stars all show solar-like oscillations, pulsations that are excited and intrinsically damped by near-surface convection. Many overtones are typically excited to observable amplitudes, giving a…

Solar and Stellar Astrophysics · Physics 2019-04-17 William J. Chaplin , Heather M. Cegla , Christopher A. Watson , Guy R. Davies , Warrick H. Ball

Millisecond and binary pulsars are the most stable astronomical standards of frequency. They can be applied to solving a number of problems in astronomy and time-keeping metrology including the search for a stochastic gravitational wave…

Solar and Stellar Astrophysics · Physics 2015-05-14 Sergei Kopeikin

The stellar spin orientation relative to the orbital planes of multiplanet systems are becoming accessible to observations. Here, we analyze and classify different types of spin-orbit evolution in compact multiplanet systems perturbed by an…

Earth and Planetary Astrophysics · Physics 2015-06-19 Gwenaël Boué , Daniel Fabrycky

As white-dwarf (WD) stars cool, they go through one or more stages of $g$(gravity)-mode pulsational instability, becoming multiperiodic variable stars. Stars passing through these instability domains allow astronomers to study their…

Solar and Stellar Astrophysics · Physics 2022-03-09 A. H. Córsico

We investigate induced oscillations by the gravitational field of a fast stellar object, such as a neutron star or a black-hole in a near miss collision with another star. Non-adiabatic collision conditions may lead to large amplitude…

Solar and Stellar Astrophysics · Physics 2015-06-19 C. A. Bertulani , M. Naizer , W. Newton

Oscillation frequencies are the most accurate properties one can measure for a star, potentially allowing detailed tests of stellar models and evolution theories. We briefly review asteroseismology for two classes of stars. In delta Scuti…

Astrophysics · Physics 2007-05-23 Hans Kjeldsen , Timothy R. Bedding

Astrometry of pulsars, particularly their distances, serves as a critical input for various astrophysical experiments using pulsars. Pulsar timing is a primary approach for determining a pulsar's position, parallax, and distance. In this…

Space missions have produced an incredibly large database on pulsating stars. The light curves via the frequency content contain a detailed description of each star. The critical point is the identification of modes, especially in the…

Solar and Stellar Astrophysics · Physics 2013-08-27 M. Paparó , J. M. Benkő

An overview of selected topical problems on modelling oscillation properties in solar-like stars is presented. High-quality oscillation data from both space-borne intensity observations and ground-based spectroscopic measurements provide…

Solar and Stellar Astrophysics · Physics 2011-03-28 Gunter Houdek

The astrometry technique is an important tool for detecting and characterizing exoplanets of different type. In this review, the different projects which are either operating, in construction or in discussion are presented and their…

Earth and Planetary Astrophysics · Physics 2009-12-03 F. Malbet , A. Sozzetti , P. Lazorenko , R. Launhardt , D. Segransan , F. Delplancke , N. Elias , M. Muterspaugh , A. Quirrenbach , S. Reffert , G. van Belle

When an exoplanet passes behind its host star, we can measure the time of the occultation, its depth, and its color. In this chapter we describe how these observables can be used to deduce physical characteristics of the planet such as its…

Earth and Planetary Astrophysics · Physics 2018-12-05 Roi Alonso

We present results of numerical simulations of flux and linear polarization variations in transiting exoplanetary systems, caused by the host star disk symmetry breaking. We consider different configurations of planetary transits depending…

Solar and Stellar Astrophysics · Physics 2015-06-17 N. M. Kostogryz , T. M. Yakobchuk , S. V. Berdyugina

The search for life outside of the Solar System should not be restricted to exclusively planetary bodies; large moons of extrasolar planets may also be common habitable environments throughout the Galaxy. Extrasolar moons, or exomoons, may…

Earth and Planetary Astrophysics · Physics 2009-11-30 David M. Kipping , Stephen J. Fossey , Giammarco Campanella , Jean Schneider , Giovanna Tinetti

Radio wavelength astrometry of stars and other objects has a long and productive history. The use of that technique to determine whether stars have planets around them would cover a nearly unique part of the parameter space for detection of…

Earth and Planetary Astrophysics · Physics 2018-10-22 Bryan J. Butler , Brenda C. Matthews