NASA Breaking News 9 Oct 2015, 16:17 UTC
Stellar Astrophysics Centre at the University of Aarhus 9 Oct 2015, 08:00 UTC With this project Mia will be working with stellar observations made primarily by the Kepler spacecraft and 3D simulations of stellar surfaces. The focus will be on two themes, the granulation of various stars, and a better understanding of the amplitudes of oscillations in stars.The diameter of a star hosting a transiting exoplanet is important if you want to know the diameter of the exoplanet itself. Good tools to determine the stellar diamater is thus needed in order to find the size of the planet and make inferences abouts its type. The Kepler observations are influenced by granulation on the surface of the stars, and this granulation is a surface manifestation of convection inside the stars. We will model the granulation and then compare it to observations in order to learn more about both the granulation and our simulations. This again will allow us to predict stellar radii and surface gravities, which in the end will tell us about, for instance, the diameters of the transiting exoplanets.In addition, we will study if the effect of an exoplanet covering a small part of the granulation pattern as it transits the star can in fact be seen in light curves from the ...
NASA's Jet Propulsion Laboratory News and Features 8 Oct 2015, 23:53 UTC
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LISA Pathfinder takes a major step closer to launch with its arrival at the Spaceport in French Guiana8 Oct 2015, 20:58 UTC
NASA's Jet Propulsion Laboratory News and Features 8 Oct 2015, 18:16 UTC