Results 71 to 80 of about 45,635 (242)
Radial Velocities as an Exoplanet Discovery Method
The precise radial velocity technique is a cornerstone of exoplanetary astronomy. Astronomers measure Doppler shifts in the star's spectral features, which track the line-of/sight gravitational accelerations of a star caused by the planets orbiting it ...
B Campbell+17 more
core +1 more source
First results of the Kourovka Planet Search: discovery of transiting exoplanet candidates in the first three target fields [PDF]
We present the first results of our search for transiting exoplanet candidates as part of the Kourovka Planet Search (KPS) project. The primary objective of the project is to search for new hot Jupiters which transit their host stars, mainly in the ...
Balega, Yuri Yu.+19 more
core +1 more source
Comparing Geochemical and Geodynamical Models of Plume and Ridge Mantle Source Composition
Abstract We use a multidisciplinary approach to investigate how the parameter space of mantle convection affects present‐day mantle composition. We compare 22 forward geodynamical mantle circulation model simulations against 24 variants of a geochemical inversion model of the global radiogenic isotope data set of mantle‐derived lavas.
Paul Béguelin+6 more
wiley +1 more source
Comment: Hans Deeg \S Juan Antonio Belmonte. Handbook of Exoplanets, 2nd Edition, Springer International Publishing AG, part of Springer Nature, In ...
Robutel, Philippe, Leleu, Adrien
openaire +3 more sources
Exoplanet Predictions Based on Harmonic Orbit Resonances
The current exoplanet database includes 5454 confirmed planets and candidate planets observed with the KEPLER mission. We find 932 planet pairs from which we extract distance and orbital period ratios.
Aschwanden, Markus J., Scholkmann, Felix
core +1 more source
Radial velocity eclipse mapping of exoplanets [PDF]
Planetary rotation rates and obliquities provide information regarding the history of planet formation, but have not yet been measured for evolved extrasolar planets.
Barnes J. W.+23 more
core +2 more sources
Boundaries of photosynthesis: adaptations of carbon fixation in extreme environments
Photosynthesis faces challenges from environmental extremes of temperature, pH, and salinity, limiting gas diffusion, modifying membrane fluidity, and destabilizing photochemical and biochemical reactions. Photosynthetic organisms have evolved unique adaptations overcoming these stresses and maintaining their photosynthetic activity.
Pere Aguiló‐Nicolau+3 more
wiley +1 more source
Coreless Terrestrial Exoplanets [PDF]
Differentiation in terrestrial planets is expected to include the formation of a metallic iron core. We predict the existence of terrestrial planets that have differentiated but have no metallic core--planets that are effectively a giant silicate mantle.
Linda T. Elkins-Tanton, Sara Seager
openaire +3 more sources
Context: Infrared spectroscopy of primary and secondary eclipse events probes the composition of exoplanet atmospheres and, using space telescopes, has detected H2O, CH4 and CO2 in three hot Jupiters. However, the available data from space telescopes has
A. Thatte+15 more
core +1 more source
Efficient Follow-Up of Exoplanet Transits Using Small Telescopes [PDF]
11 pages, 5 figures, to be published in PASP, comments welcomeHere, we introduce an online tool for the prediction of exoplanet transit light curves.
Beck, Peter+4 more
core +3 more sources