Results 91 to 100 of about 164 (131)

Stellar activity and coronal heating: an overview of recent results. [PDF]

Philos Trans A Math Phys Eng Sci, 2015
Testa P, Saar SH, Drake JJ.
europepmc   +1 more source

Stellar Library of Differential Emission Measures and Extreme Ultraviolet Spectra: Dwarf Stars Observed by the Extreme Ultraviolet Explorer

The Astrophysical Journal
Extreme ultraviolet (EUV; 100–912 Å) photons influence the formation and evolution of planets by ionizing hydrogen and other species, but the EUV radiation of most exoplanet host stars is poorly constrained.
Girish M. Duvvuri, Zachory K. Berta-Thompson, J. Sebastian Pineda, Kevin France, Alexander Brown, Allison Youngblood, David J. Wilson, Cynthia S. Froning, P. Christian Schneider, Thomas Ayres, Keivan G. Stassun   +10 more
doaj   +1 more source

Potential biosignatures in super-Earth atmospheres II. Photochemical responses. [PDF]

Astrobiology, 2013
Grenfell JL, Gebauer S, Godolt M, Palczynski K, Rauer H, Stock J, von Paris P, Lehmann R, Selsis F.   +8 more
europepmc   +1 more source

HST Observations of HD 166620 and τ Ceti: First UV Spectra of a Magnetic Grand Minimum Star and the Extent of τ Ceti’s Astrosphere

The Astrophysical Journal
We present new Hubble Space Telescope (HST) UV spectra of the K2 V star HD 166620, the first star clearly recognized to be in a “magnetic grand minimum” state analogous to the Sun’s “Maunder minimum” in the late 1600s. The stellar H I Ly α surface fluxes
Brian E. Wood, Hans-Reinhard Müller, Dean Hartshorn, Seth Redfield, Travis S. Metcalfe   +4 more
doaj   +1 more source

Astrospheres and Solar-like Stellar Winds. [PDF]

Living Rev Sol Phys, 2004
Wood BE.
europepmc   +1 more source

Beam electrons as a source of Hα flare ribbons. [PDF]

Nat Commun, 2017
Druett M, Scullion E, Zharkova V, Matthews S, Zharkov S, Rouppe Van der Voort L.   +5 more
europepmc   +1 more source

On Methods and Applications in Spectrophotometry. [PDF]

Proc Natl Acad Sci U S A, 1928
Payne CH, Hogg FS.
europepmc   +1 more source

Magnetic activity and spectral behavior of RS CVn binary system (IM Pegasi) in the ultraviolet. [PDF]

Sci Rep
Sanad MR, Rahman HIA, Badawy WA.
europepmc   +1 more source

Intensities of the hydrogen Balmer lines of solar-like stars revealed by the LAMOST spectroscopic surveys. [PDF]

Sci Rep
He H.
europepmc   +1 more source

Science development study for the Atacama Large Aperture Submillimeter Telescope (AtLAST): Solar and stellar observations. [PDF]

Open Res Eur
Wedemeyer S, Barta M, Brajša R, Chai Y, Costa J, Gary D, Gimenez de Castro G, Gunar S, Fleishman G, Hales A, Hudson H, Kirkaune M, Mohan A, Motorina G, Pellizzoni A, Saberi M, Selhorst CL, Simoes PJA, Shimojo M, Skokić I, Sudar D, Menezes F, White SM, Booth M, Klaassen P, Cicone C, Mroczkowski T, Cordiner MA, Di Mascolo L, Johnstone D, van Kampen E, Lee M, Liu D, Maccarone T, Orlowski-Scherer J, Saintonge A, Smith M, Thelen AE.   +37 more
europepmc   +1 more source