Results 51 to 60 of about 4,942 (197)
Roche tomography of the secondary stars in CVs [PDF]
, 2003 The secondary stars in cataclysmic variables (CVs) are key to our understanding of the origin, evolution and behaviour of this class of interacting binary.
Dhillon, V. S., Watson, C. A.
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Core-envelope Decoupling Drives Radial Shear Dynamos in Cool Stars
The Astrophysical Journal Letters, 2023 Differential rotation is thought to be responsible for the dynamo process in stars like our Sun, driving magnetic activity and starspots. We report that starspot measurements in the Praesepe open cluster are strongly enhanced only for stars that depart ...
Lyra Cao +2 more
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KOI-1003: A new spotted, eclipsing RS CVn binary in the Kepler field
, 2016 Using the high-precision photometry from the Kepler space telescope, thousands of stars with stellar and planetary companions have been observed. The characterization of stars with companions is not always straightforward and can be contaminated by ...
Harmon, Robert O. +3 more
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, 2014 We present seventeen high-precision light curves of five transits of the planet Qatar-2b, obtained from four defocussed 2m-class telescopes. Three of the transits were observed simultaneously in the SDSS griz passbands using the seven-beam GROND imager ...
Bruni, I. +8 more
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KIC 7284688: A Solar-type Eclipsing Binary with Rapidly Varying O’Connell Effect
The Astronomical Journal, 2023 We present comprehensive photometric and spectroscopic study of the short-period eclipsing binary KIC 7284688 based on the Kepler, TESS, and LAMOST data.
Yang Pan, Xiaobin Zhang
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Stellar Evolution Models of Young Stars: Progress and Limitations
, 2015 Stellar evolution models are a cornerstone of young star astrophysics, which necessitates that they yield accurate and reliable predictions of stellar properties.
Feiden, Gregory A.
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Polarization in exoplanetary systems caused by transits, grazing transits, and starspots
, 2015 We present results of numerical simulations of flux and linear polarization variations in transiting exoplanetary systems, caused by the host star disk symmetry breaking.
Berdyugina, S. V. +2 more
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A Dark Spot on a Massive White Dwarf [PDF]
, 2015 We present the serendipitous discovery of eclipse-like events around the massive white dwarf SDSS J152934.98+292801.9 (hereafter J1529+2928). We selected J1529+2928 for time-series photometry based on its spectroscopic temperature and surface gravity ...
Bell, Keaton J. +9 more
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Proceedings of the International Astronomical Union, 2010 AbstractStarspots are being observed with many different techniques but not always with coherent results. In particular not if model-dependent data analysis must be employed, e.g. through two-dimensional spot modelling of one-dimensional photometric light curves. I review the zoo of currently available physical spot parameters, i.e.
openaire +1 more source
The Astrophysical Journal, 2023 Stellar rotation is crucial for studying stellar evolution, since it provides information about age, angular momentum transfer, and magnetic fields of stars.
Alexandre Araújo, Adriana Valio
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