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Astronomische Nachrichten, Volume 343, Issue 3, March 2022., 2022 Abstract We revisited 10 known exoplanetary systems using publicly available data provided by the transiting exoplanet survey satellite (TESS). The sample presented in this work consists of short period transiting exoplanets, with inflated radii and large reported uncertainty on their planetary radii.
Xanthippi Alexoudi
wiley +1 more source
The effect of starspots on the radii of low-mass pre-main sequence stars [PDF]
, 2014 A polytropic model is used to investigate the effects of dark photospheric spots on the evolution and radii of magnetically active, low-mass ...
Jackson, R. J., Jeffries, R. D.
core +10 more sources
Monitoring active stars 29 Dra, 12 Cam and colour excess of II Peg [PDF]
Serbian Astronomical Journal, 2007 We present the BV light curves analysis of late-type, long-period stars 29 Dra, 12 Cam for the season 2005/2006, and shorter-period star II Peg for the same season.
Zboril M.
doaj +1 more source
Starspot Activity without Pulsation in the Binary System KIC 5444392 Revisited
Universe, 2023 We revisited the short-period (∼1.5 days) binary system KIC 5444392, which shows quasi-period modulated light variations. Previous studies indicated that these variations might be caused by stellar pulsations.
Mengqi Jin +3 more
doaj +1 more source
The Astronomical Journal, 2016 ABSTRACT By analyzing K2 short-cadence observations, we detect starspots on WASP-85A, the host star of the hot Jupiter WASP-85Ab. The detection of recurring starspot occultation events indicates that the planet’s orbit is aligned with the star’s rotational axis ( λ
T. Močnik +4 more
openaire +2 more sources
Differential photometry of EK DRA and 29 DRA [PDF]
Serbian Astronomical Journal, 2005 We report on BVR precise photometry of active late-type stars EK DRA and 29 DRA in the spring of 2004. The analysis suggests a reasonable fit with single spot model for both cases in the season as far as the V-curve is concerned.
Zboril M.
doaj +1 more source
Under-Developed and Under-Utilized Eclipsing Binary Model Capabilities [PDF]
Journal of Astronomy and Space Sciences, 2012 Existing but largely unused binary star model capabilities are examined. An easily implemented scheme is parameterization of starspot growth and decay that can stimulate work on outer convection zones and their dynamos.
R. E. Wilson
doaj +1 more source
ON SUNSPOT AND STARSPOT LIFETIMES [PDF]
The Astrophysical Journal, 2014 We consider the lifetimes of spots on the Sun and other stars from the standpoint of magnetic diffusion. While normal magnetic diffusivity predicts lifetimes of sunspots that are too large by at least two orders of magnitude, turbulent magnetic diffusivity accounts for both the functional form of the solar empirical spot-lifetime relation and for the ...
S. J. Bradshaw, P. Hartigan
openaire +2 more sources
3D Radiative MHD Simulations of Starspots [PDF]
The Astrophysical Journal, 2020 Abstract There are no direct spatially resolved observations of spots on stars other than the Sun, and starspot properties are inferred indirectly through lightcurves and spectropolarimetric data. We present the first self-consistent 3D radiative MHD computations of starspots on G2V, K0V, and M0V stars, which will help us to better ...
Mayukh Panja +2 more
openaire +3 more sources
Joint Modeling of Radial Velocities and Photometry with a Gaussian Process Framework
The Astrophysical Journal, 2023 Developments in the stability of modern spectrographs have led to extremely precise instrumental radial velocity (RV) measurements. For most stars, the detection limit of planetary companions with these instruments is expected to be dominated by ...
Quang H. Tran +3 more
doaj +1 more source