The prevailing assumption is that all exoplanets are made of ordinary matter. However, we propose an unconventional possibility that some exoplanets could be made of dark matter, which we name "dark exoplanets." In this paper, we explore methods to search for dark exoplanets, including the mass-radius relation, spectroscopy, missing transit, and ...
Yang Bai, Sida Lu, Nicholas Orlofsky
openaire +3 more sources
A Geologic Si‐O‐C Pathway to Incorporate Carbon in Silicates
This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.
Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions
Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Alexandra Navrotsky +2 more
wiley +2 more sources
In the search for life on other planets, the presence of photosynthetic surface vegetation may be detectable from the colors of light it reflects. On the modern Earth, this spectral reflectance is characterized by a steep increase in reflectance between ...
Owen R. Lehmer +5 more
doaj +1 more source
The growing database of exoplanets has shown us the statistical characteristics of various exoplanet populations, providing insight towards their origins.
Jonathan H. Jiang +4 more
doaj +1 more source
Two Suns in The Sky: Stellar Multiplicity in Exoplanet Systems [PDF]
We present results of a reconnaissance for stellar companions to all 131 radial-velocity-detected candidate extrasolar planetary systems known as of July 1, 2005.
Beaulieu, Thom D. +6 more
core +2 more sources
Ultra-High Pressure Dynamic Compression of Geological Materials
Dynamic-compression experiments on geological materials are important for understanding the composition and physical state of the deep interior of the Earth and other planets.
Thomas S. Duffy, Raymond F. Smith
doaj +1 more source
Oxygen False Positives on Habitable Zone Planets Around Sun‐Like Stars
Oxygen is a promising exoplanet biosignature due to the evolutionary advantage conferred by harnessing starlight for photosynthesis, and the apparent low likelihood of maintaining oxygen‐rich atmospheres without life.
Joshua Krissansen‐Totton +3 more
doaj +1 more source
HD3651B: the first directly imaged brown dwarf companion of an exoplanet host star [PDF]
In the course of our ongoing multiplicity study of exoplanet host stars we detected a faint companion located at ~43arcsec (480AU physical projected separation) north-west of its primary -- the exoplanet host star HD3651 at 11pc.
Mazeh, T. +3 more
core +3 more sources
Simultaneous characterization of the atmospheres, surfaces, and exomoons of nearby rocky exoplanets
Atmospheric composition is an important indicator of habitability and life. The presence or absence of a large exomoon around an Earth-size exoplanet could have important consequences for planet climate stability.
WenLiang Cui +6 more
doaj +1 more source
HD 199719’un Çizgi Ortay Analizi
Bu çalışmada, TÜBİTAK Ulusal Gözlemevinde (TUG) devam etmekte olan ötegezegen araştırmasının bir parçası olarak HD 199719’un tayfsal çizgi ortaylarının (bisektör) değişimleri incelendi.
Didem Dilan İZCİ, Mesut YILMAZ
doaj +1 more source

