Results 21 to 30 of about 33,425 (198)

A Hubble Space Telescope ACS Search for Brown Dwarf Binaries in the Pleiades Open Cluster [PDF]

open access: yes, 2005
We present the results of a high-resolution imaging survey for brown dwarf binaries in the Pleiades open cluster. The observations were carried out with the Advance Camera for Surveys onboard the Hubble Space Telescope.
Bouvier J.   +17 more
core   +5 more sources

A Tale of Two Anomalies: Depletion, Dispersion, and the Connection Between the Stellar Lithium Spread and Inflated Radii on the Pre-Main Sequence [PDF]

open access: yes, 2014
We investigate lithium depletion in standard stellar models (SSMs) and main sequence (MS) open clusters, and explore the origin of the Li dispersion in young, cool stars of equal mass, age and composition.
Pinsonneault, Marc, Somers, Garrett
core   +1 more source

The Seven Sisters DANCe. I. Empirical isochrones, Luminosity and Mass Functions of the Pleiades cluster [PDF]

open access: yes, 2015
The DANCe survey provides photometric and astrometric (position and proper motion) measurements for approximately 2 millions unique sources in a region encompassing $\approx$80deg$^{2}$ centered around the Pleiades cluster.
Barrado, D.   +9 more
core   +1 more source

Glacier topography and elevation changes derived from Pléiades sub-meter stereo images [PDF]

open access: yesThe Cryosphere, 2014
In response to climate change, most glaciers are losing mass and hence contribute to sea-level rise. Repeated and accurate mapping of their surface topography is required to estimate their mass balance and to extrapolate/calibrate sparse field ...
E. Berthier   +10 more
doaj   +1 more source

Geomorphology of the coastal alluvial fan complex Guanillos, northern Chile

open access: yesJournal of Maps, 2019
The evolution of alluvial fans on the narrow coastal plain of the Atacama Desert in northern Chile is so far poorly investigated. Therefore, a detailed geomorphological map at a scale of 1:7500 of a coastal alluvial fan complex at Guanillos (21°58′S, 70 ...
Janek Walk   +4 more
doaj   +1 more source

US power sector carbon capture and storage under the Inflation Reduction Act could be costly with limited or negative abatement potential

open access: yesEnvironmental Research: Infrastructure and Sustainability, 2023
The United States’ (US) largest-ever investment in expected climate mitigation, through 2022’s Inflation Reduction Act (IRA), relies heavily on subsidies.
Emily Grubert, Frances Sawyer
doaj   +1 more source

Comparing Fuzzy Sets and Random Sets to Model the Uncertainty of Fuzzy Shorelines

open access: yesRemote Sensing, 2017
This paper addresses uncertainty modelling of shorelines by comparing fuzzy sets and random sets. Both methods quantify extensional uncertainty of shorelines extracted from remote sensing images. Two datasets were tested: pan-sharpened Pleiades with four
Ratna Sari Dewi   +2 more
doaj   +1 more source

Rotation of Late-Type Stars in Praesepe with K2 [PDF]

open access: yes, 2017
We have Fourier analyzed 941 K2 light curves of likely members of Praesepe, measuring periods for 86% and increasing the number of rotation periods (P) by nearly a factor of four. The distribution of P vs. (V-K), a mass proxy, has three different regimes:
Bouvier, J.   +7 more
core   +4 more sources

“Kill Two Birds with One Stone”: Urban Tree Species Classification Using Bi-Temporal Pléiades Images to Study Nesting Preferences of an Invasive Bird

open access: yesRemote Sensing, 2017
This study presents the results of object-based classifications assessing the potential of bi-temporal Pléiades images for mapping broadleaf and coniferous tree species potentially used by the ring-necked parakeet Psittacula krameri for nesting in the ...
Marine Le Louarn   +3 more
doaj   +1 more source

Apport des images satellitaires très haute résolution sur une étude de tracé d'infrastructure routière

open access: yesRevue Française de Photogrammétrie et de Télédétection, 2015
La quatrième rocade d'Alger a fait l'objet d'une étude préliminaire de faisabilité géotechnique en 2009 à partir d'images SPOT5 Ortho Basic. Adoptant une démarche naturaliste, une étude comparative est menée entre ces images et les images PLEIADES XS et ...
Johan Kasperski, Marianne Chahine
doaj   +1 more source

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