Results 31 to 40 of about 399,430 (333)

Chemical Composition of a Young Star HD 377

Open Astronomy, 2012
A high resolution spectrum of a pre-main sequence star HD 377 is analyzed. The atmospheric parameters are found to be: Teff =5875 K, log g = 4.25 and the microturbulent velocity ξt = 1.40 kms−1. The metallicity of HD377 is slightly higher than of the Sun,
Kipper Tõnu
doaj   +1 more source

Magnetohydrostatic atmospheres

, 2003
We show that the atmospheric and magnetic height variations are coupled in general MHS equilibria with gravity when isolated thin non-force-free flux tubes are present.
Airapetian, Altschuler, Anderson, Arendt, Ayres, Bogdan, Carlsson, Cauzzi, Cheng, Coles, Craig, Davis, Dungey, Fontenla, Giovanelli, Giovanelli, Guhathakurta, Hammer, Hearn, Heyvaerts, Hudson, Jarrett, L. J. November, Lin, Lin, Low, Low, Low, Low, Low, Low, MacQueen, MacQueen, Menzel, Neukirch, Newkirk, November, Parker, Parker, Parker, Petschek, Pneuman, Priest, Rosner, Schatten, Schmieder, Scudder, Syrovatskii, Vaiana, Vaiana, Vainshtein, van Ballegooijen, Vernazza, Wagner, Williams, Withbroe, Woo, Zweibel   +57 more
core   +1 more source

Dreaming of atmospheres [PDF]

, 2016
Here we introduce the RobERt (Robotic Exoplanet Recognition) algorithm for the classification of exoplanetary emission spectra. Spectral retrievals of exoplanetary atmospheres frequently requires the preselection of molecular/atomic opacities to be ...
Waldmann, I. P.
core   +2 more sources

A grid of polarization models for Rayleigh scattering planetary atmospheres

, 2009
We investigate the intensity and polarization of reflected light from planetary atmospheres. We present a large grid of Monte Carlo simulations for planets with Rayleigh scattering atmospheres. We discuss the disk-integrated polarization for phase angles
Abhyankar, Abhyankar, Bailey, Baines, Beuzit, Bhatia, Braak, Braak, Code, Coffeen, Dalgarno, Dlugach, Dollfus, E. Buenzli, H. M. Schmid, Hadamcik, Hansen, Horak, Hough, Joos, Karkoschka, Karkoschka, Kattawar, Leinert, Prather, Price, Rowe, Schmid, Schmid, Seager, Sromovsky, Sromovsky, Sromovsky, Stam, Stam, Stam, Stecklum, Tomasko, Tomasko, Tomasko, Trafton, West, West, Wiktorowicz, Witt   +44 more
core   +2 more sources

A Multiple Scattering Polarized Radiative Transfer Model: Application to HD 189733b [PDF]

, 2015
We present a multiple scattering vector radiative transfer model which produces disk integrated, full phase polarized light curves for reflected light from an exoplanetary atmosphere.
Kopparla, Pushkar, Natraj, Vijay, Swain, Mark R., Wiktorowicz, Sloane J., Yung, Yuk L., Zhang, Xi   +5 more
core   +2 more sources

An intracellular transporter mitigates the CO2‐induced decline in iron content in Arabidopsis shoots

FEBS Letters, EarlyView.
This study identifies a gene encoding a transmembrane protein, MIC, which contributes to the reduction of shoot Fe content observed in plants under elevated CO2. MIC is a putative Fe transporter localized to the Golgi and endosomal compartments. Its post‐translational regulation in roots may represent a potential target for improving plant nutrition ...
Timothy Mozzanino, Meijie Li, Cécile Fizames, Mattia Adamo, Laurence Lejay, Christian Dubos, Matthieu Platre, Antoine Martin   +7 more
wiley   +1 more source

Sur quelques films “sylphiques”

Ambiances
In the context of atmosphere studies, it seems of the utmost interest to examine - both technically and aesthetically - the more or less invisible active forces in the air around us, and particularly the different ways in which these forces can be made ...
Charlie Hewison
doaj   +1 more source

Atomic diffusion in the atmosphere of Feige 86

Open Astronomy, 2017
We have revisited the ultraviolet and optical spectra of the blue horizontal branch star Feige 86. The new analysis finds the star cooler and more compact than previously determined. The IUE spectrum of Feige 86 holds numerous unidentified spectral lines
Németh Péter
doaj   +1 more source

Linking the evolution of terrestrial interiors and an early outgassed atmosphere to astrophysical observations [PDF]

, 2019
A terrestrial planet is molten during formation and may remain so if subject to intense insolation or tidal forces. Observations continue to favour the detection and characterisation of hot planets, potentially with large outgassed atmospheres. We aim to
Bower, Dan J., Dorn, Caroline, Kitzmann, Daniel, Oza, Apurva V., Sanan, Patrick, Wolf, Aaron S.   +5 more
core   +3 more sources

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

FEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo, Catherine S. Palmer, Jacqueline M. Kimmey   +2 more
wiley   +1 more source