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Energy input flux in the global quiet-sun corona
(IOP Publishing, 2017-07)
We present first results of a novel technique that provides, for the first time, constraints on the energy input flux at the coronal base (r ∼ 1.025 R o) of the quiet Sun at a global scale. By combining differential emission ...
THE UBV(RI)(C) COLORS OF THE SUN
(IOP PUBLISHING LTDBRISTOL, 2012)
Photometric data in the UBV(RI)(C) system have been acquired for 80 solar analog stars for which we have previously derived highly precise atmospheric parameters T-eff, log g, and [Fe/H] using high-resolution, high ...
THE INFRARED COLORS OF THE SUN
(IOP PUBLISHING LTDBRISTOL, 2012)
Solar infrared colors provide powerful constraints on the stellar effective temperature scale, but they must be measured with both accuracy and precision in order to do so. We fulfill this requirement by using line-depth ...
Age and mass of solar twins constrained by lithium abundance
(Astronomy & Astrophysics, 2009)
A new imminent grand minimum?
(Cambridge University Press, 2011-10)
The planetary hypothesis of solar cycle is an old idea by which the planetary gravity acting on the Sun might have a non-negligible effect on the solar magnetic cycle. The advance of this hypothesis is based on phenomenological ...
HIP 114328: a new refractory-poor and Li-poor solar twin
(EDP SciencesLes Ulis, 2014)
Context. The standard solar model fails to predict the very low lithium abundance in the Sun, which is much lower than the proto-solar
nebula (as measured in meteorites). This Li problem has been debated for decades, and ...
Rotation periods and ages of solar analogs and solar twins revealed by the kepler mission
(The American Astronomical Society, 2014-08-01)
A new sample of solar analogs and twin candidates has been constructed and studied, paying particular attention to their light curves from NASA’s Kepler mission. This Letter aims to assess their evolutionary status, derive ...
Rotation periods and ages of solar analogs and solar twins revealed by the kepler mission
(IOP Publishing, 2020)
The remarkable solar twin HIP 56948: a prime target in the quest for other Earths
(EDP SCIENCES S ALES ULIS CEDEX A, 2012)
Context. The Sun shows abundance anomalies relative to most solar twins. If the abundance peculiarities are due to the formation of inner rocky planets, that would mean that only a small fraction of solar type stars may ...
uvby-beta photometry of solar twins The solar colors, model atmospheres, and the T(eff) and metallicity scales
(EDP SCIENCES S A, 2010)
Aims. Solar colors have been determined on the uvby-beta photometric system to test absolute solar fluxes, to examine colors predicted by model atmospheres as a function of stellar parameters (T(eff), log g, [Fe/H]), and ...