Results 21 to 30 of about 304,444 (325)

Robo-AO Kepler Survey IV: the effect of nearby stars on 3857 planetary candidate systems [PDF]

open access: yes, 2018
We present the overall statistical results from the Robo-AO Kepler planetary candidate survey, comprising of 3857 high-angular resolution observations of planetary candidate systems with Robo-AO, an automated laser adaptive optics system.
Baranec, Christoph   +9 more
core   +3 more sources

Planetary Systems [PDF]

open access: yesInternational Astronomical Union Colloquium, 1999
AbstractThe past decade brought direct evidence of the previously surmised exoplanetary systems. A variety of planetary system types exist those around pulsars, around both young and old main-sequence stars (as evidenced by planetesimal disks of the Beta Pictoris-type), and the mature giant exoplanets found in radial velocity surveys.
openaire   +1 more source

Exoplanet Predictions Based on Harmonic Orbit Resonances

open access: yesGalaxies, 2017
The current exoplanet database includes 5454 confirmed and candidate planets observed with the Kepler mission. We find 932 planet pairs from which we extract distance and orbital period ratios.
Markus J. Aschwanden, Felix Scholkmann
doaj   +1 more source

The Deuterium Isotopic Ratio of Water Released From the Martian Caps as Measured With TGO/NOMAD

open access: yesGeophysical Research Letters, 2022
We report vertical profiles of water and D/H for one Martian year as measured with the TGO/NOMAD instrument. The observations were performed via solar occultation, providing water profiles up to ∼100 km and D/H up to ∼60 km, with a vertical resolution of
Geronimo L. Villanueva   +20 more
doaj   +1 more source

Properties of the Planetary Caustic Perturbation [PDF]

open access: yes, 2010
Just two of 10 extrasolar planets found by microlensing have been detected by the planetary caustic despite the higher probability of planet detection relative to the central caustic which has been responsible for four extrasolar planet detections.
Albrow   +23 more
core   +1 more source

A Review on Substellar Objects below the Deuterium Burning Mass Limit: Planets, Brown Dwarfs or What?

open access: yesGeosciences, 2018
“Free-floating, non-deuterium-burning, substellar objects” are isolated bodies of a few Jupiter masses found in very young open clusters and associations, nearby young moving groups, and in the immediate vicinity of the Sun.
José A. Caballero
doaj   +1 more source

Carbonate clumped isotope thermometry of fault rocks and its possibilities: tectonic implications from calcites within Himalayan Frontal Fold-Thrust Belt

open access: yesProgress in Earth and Planetary Science, 2021
Disentangling the temperature and depth of formation of fault rocks is critical for understanding their rheology, exhumation, and the evolution of fault zones.
Dyuti Prakash Sarkar   +5 more
doaj   +1 more source

Microlensing Searches for Exoplanets

open access: yesGeosciences, 2018
Gravitational microlensing finds planets through their gravitational influence on the light coming from a more distant background star. The presence of the planet is then inferred from the tell-tale brightness variations of the background star during the
Yiannis Tsapras
doaj   +1 more source

MAHLI on Mars: lessons learned operating a geoscience camera on a landed payload robotic arm [PDF]

open access: yesGeoscientific Instrumentation, Methods and Data Systems, 2016
The Mars Hand Lens Imager (MAHLI) is a 2-megapixel, color camera with resolution as high as 13.9 µm pixel−1. MAHLI has operated successfully on the Martian surface for over 1150 Martian days (sols) aboard the Mars Science Laboratory (MSL) rover ...
R. A. Yingst   +7 more
doaj   +1 more source

Dating mylonitic overprinting of ancient rocks

open access: yesCommunications Earth & Environment, 2023
The timing of deformation in ancient shear zones of the Akia Terrane, Greenland, is recorded by the Proterozoic Rb-Sr age of mylonitic biotite which is determined through collision cell laser ablation and inverse thermal history modelling.
Christopher L. Kirkland   +6 more
doaj   +1 more source

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