Results 31 to 40 of about 8,194 (235)
Emergent Exoplanet Flux: Review of the Spitzer Results [PDF]
, 2008 Observations using the Spitzer Space Telescope provided the first detections of photons from extrasolar planets. Spitzer observations are allowing us to infer the temperature structure, composition, and dynamics of exoplanet atmospheres.
Bouchy +6 more
core +1 more source
A high dynamic-range instrument for SPICA for coronagraphic observation of exoplanets and monitoring of transiting exoplanets [PDF]
SPIE Proceedings, 2011 15 pages, 10 figures, 2 ...
Keigo Enya +4 more
openaire +3 more sources
TOI-1136 is a Young, Coplanar, Aligned Planetary System in a Pristine Resonant Chain
The Astronomical Journal, 2023 Convergent disk migration has long been suspected to be responsible for forming planetary systems with a chain of mean-motion resonances (MMRs). Dynamical evolution over time could disrupt the delicate resonant configuration. We present TOI-1136, a 700 ±
Fei Dai +62 more
doaj +1 more source
Exoplanet albedo spectra and colors as a function of planet phase, separation, and metallicity [PDF]
, 2010 First generation optical coronagraphic telescopes will obtain images of cool gas and ice giant exoplanets around nearby stars. The albedo spectra of exoplanets at planet-star separations larger than about 1 AU are dominated by reflected light to beyond 1
Ackerman +58 more
core +2 more sources
DIRECT MEASURE OF RADIATIVE AND DYNAMICAL PROPERTIES OF AN EXOPLANET ATMOSPHERE [PDF]
The Astrophysical Journal Letters, 2016 ABSTRACT Two decades after the discovery of 51 Peg b, the formation processes and atmospheres of short-period gas giants remain poorly understood. Observations of eccentric systems provide key insights on those topics as they can illuminate how a planet’s atmosphere responds to changes in incident flux.
Julien de Wit +6 more
openaire +6 more sources
Radial velocity eclipse mapping of exoplanets [PDF]
, 2015 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
Dynamical Mass of the Exoplanet Host Star HR 8799
The Astronomical Journal, 2022 Abstract HR 8799 is a young A5/F0 star hosting four directly imaged giant planets at wide separations (∼16–78 au), which are undergoing orbital motion and have been continuously monitored with adaptive optics imaging since their discovery over a decade ago. We present a dynamical mass of HR 8799 using 130 epochs of relative astrometry of
Aldo G. Sepulveda, Brendan P. Bowler
openaire +2 more sources
Validating AU Microscopii d with Transit Timing Variations
The Astronomical Journal, 2023 AU Mic is a young (22 Myr), nearby exoplanetary system that exhibits excess transit timing variations (TTVs) that cannot be accounted for by the two known transiting planets nor stellar activity.
Justin M. Wittrock +33 more
doaj +1 more source
Climate Modeling of a Potential ExoVenus [PDF]
, 2018 The planetary mass and radius sensitivity of exoplanet discovery capabilities has reached into the terrestrial regime. The focus of such investigations is to search within the Habitable Zone where a modern Earth-like atmosphere may be a viable comparison.
Ceja, Alma Y. +3 more
core +4 more sources
Regular and chaotic orbits in the dynamics of exoplanets [PDF]
The European Physical Journal Special Topics, 2016 Many of exoplanetary systems consist of more than one planet and the study of planetary orbits with respect to their long-term stability is very interesting. Furthermore, many exoplanets seem to be locked in a mean-motion resonance (MMR), which offers a phase protection mechanism, so that, even highly eccentric planets can avoid close encounters ...
openaire +3 more sources