Results 61 to 70 of about 35,917 (194)

Search for a circum-planetary material and orbital period variations of short-period Kepler exoplanet candidates

, 2014
A unique short-period Mercury-size Kepler exoplanet candidate KIC012557548b has been discovered recently by Rappaport et al. (2012). This object is a transiting disintegrating exoplanet with a circum-planetary material - comet-like tail.
Budaj, J., Garai, Z., Stellingwerf, R. F., Zhou, G.   +3 more
core   +1 more source

Theoretical Spectra of Terrestrial Exoplanet Surfaces [PDF]

, 2012
We investigate spectra of airless rocky exoplanets with a theoretical framework that self-consistently treats reflection and thermal emission. We find that a silicate surface on an exoplanet is spectroscopically detectable via prominent Si-O features in ...
Batalha, Best, Bethany L. Ehlmann, Borucki, Borucki, Cheek, Clark, Clark, Cochran, Cowan, de Pater, Drilling, Farmer, Gautier, Koch, Miller-Ricci, Muirhead, Pieters, Pieters, RELAB Spectral Database, Renyu Hu, Rogers, Salisbury, Sara Seager, Seager, Seager, Sobolev, Sprague, Winn   +28 more
core   +2 more sources

A Population of Very-Hot Super-Earths in Multiple-Planet Systems Should be Uncovered by Kepler

, 2010
We simulate a Kepler-like observation of a theoretical exoplanet population and we show that the observed orbital period distribution of the Kepler giant planet candidates is best matched by an average stellar specific dissipation function Q_* in the ...
Batalha, Batalha, Borucki, Bryson, Caldwell, Dobbs-Dixon, Ford, Fortney, Gu, Haas, Ibgui, Ida, Ida, Ida, Jackson, Jackson, Jackson, Jenkins, Jenkins, Koch, Levrard, Mardling, Masset, Miller, Ogihara, Ogilvie, Ogilvie, Reid, Rocha-Pinto, Rocha-Pinto, Sandquist, Schlaufman, Schlaufman, Seager, Winn   +34 more
core   +1 more source

Deciphering the “Missing Xenon Paradox” in Celestial Bodies: A Multifaceted Perspective Toward Demystifying This Enigma

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract Xenon (Xe) is a heavy noble gas with intriguing chemical properties, such as having several stable isotopes and the ability to form compounds under extreme conditions. Despite the predictions based on cosmochemical models that suggest xenon should be relatively abundant in planetary reservoirs, empirical data indicate a significant depletion ...
Avinash Kumar Both, Avradip Ghosh, Chin Li Cheung   +2 more
wiley   +1 more source

The Ultraviolet Radiation Environment Around M dwarf Exoplanet Host Stars [PDF]

, 2012
The spectral and temporal behavior of exoplanet host stars is a critical input to models of the chemistry and evolution of planetary atmospheres. At present, little observational or theoretical basis exists for understanding the ultraviolet spectra of M ...
Bushinsky, Rachel, Desert, Jean-Michel, France, Kevin, Froning, Cynthia S., Linsky, Jeffrey L., Mauas, Pablo, Roberge, Aki, Stocke, John T., Tian, Feng, Vieytes, Mariela, Walkowicz, Lucianne M.   +10 more
core   +4 more sources

Modeling Wind‐Driven Waves on Other Planets: Applications to Mars, Titan, and Exoplanets

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract Waves could exist on any planet with sustained winds and stable surface liquids. However, differences in atmospheres, liquids, and gravity confound efforts to extend Earth‐based empirical wave models to other planetary environments. We adapted a physics‐based numerical wave model to study how planetary conditions affect the growth of waves. We
Una G. Schneck, Charlene E. Detelich, Milan Curcic, Andrew D. Ashton, Alexander G. Hayes, J. Taylor Perron   +5 more
wiley   +1 more source

Towards consistent mapping of distant worlds: secondary-eclipse scanning of the exoplanet HD189733b

, 2012
Mapping distant worlds is the next frontier for exoplanet infrared photometry studies. Ultimately, constraining spatial and temporal properties of an exoplanet atmosphere will provide further insight into its physics. For tidally-locked hot Jupiters that
de Wit, Julien, Demory, Brice-Olivier, Gillon, Michaël, Seager, Sara   +3 more
core   +1 more source

A new view on exoplanet transits: Transit of Venus described using three-dimensional solar atmosphere Stagger-grid simulations [PDF]

, 2015
Stellar activity and, in particular, convection-related surface structures, potentially cause fluctuations that can affect the transit light curves. Surface convection simulations can help the interpretation of ToV.
Asplund, M., Chiavassa, A., Collet, R., Faurobert, M., Magic, Z., Pere, C., Ricort, G., Tanga, P.   +7 more
core   +4 more sources

Searching for Rotational X‐Ray Modulation on TIC 277539431

Astronomische Nachrichten, Volume 347, Issue 3, March 2026.
ABSTRACT TIC 277539431, a fast rotating M7 dwarf, was detected to host the highest latitude flare to date at 81°$$ {81}^{{}^{\circ}} $$. Magnetic activity like stellar flares occurring at high latitude indicate occurrence of coronal loops at these latitudes on fully‐convective M dwarfs. In contrast, sunspots usually occur below 30°$$ {30}^{{}^{\circ}} $
Desmond Dsouza, Katja Poppenhäger, Ekaterina Ilin   +2 more
wiley   +1 more source

Effects of rotation and magnetic fields on the lithium abundance and asteroseismic properties of exoplanet-host stars

, 2010
Aims: The effects of rotation and magnetic fields on the surface abundances of solar-type stars are studied in order to investigate whether the reported difference in lithium content of exoplanet-host stars can be related to their rotational history ...
A. Maeder, Asplund, Bouvier, Castro, Chaboyer, Chaplin, Charbonneau, Charbonnel, Christensen-Dalsgaard, Denissenkov, Denissenkov, Denissenkov, Eggenberger, Eggenberger, G. Meynet, Gellert, Irwin, Israelian, Krishnamurthi, Kumar, Mestel, P. Eggenberger, Paquette, Pinsonneault, Pinsonneault, Schatzman, Soderblom, Spruit, Talon, Zahn, Zahn   +30 more
core   +1 more source