Results 91 to 100 of about 10,524 (236)
The inflated radii of M-dwarfs in the Pleiades [PDF]
, 2018 Rotation periods obtained with the Kepler satellite have been combined with precise measurements of projected rotation velocity from the WIYN 3.5-m telescope to determine the distribution of projected radii for several hundred low-mass ($0.1 \leq M/M_ ...
R. Jackson +4 more
semanticscholar +1 more source
Journal of Geophysical Research: Space Physics, Volume 130, Issue 4, April 2025.Abstract Ionospheric molecular ions, such as N2+ ${\mathrm{N}}_{2}^{+}$, NO+, and O2+ ${\mathrm{O}}_{2}^{+}$, have been observed in Earth's high‐altitude ionosphere and the magnetosphere by several spacecraft missions. Their presence not only indicates that they obtain sufficient energy through effective energization mechanisms, predominantly during ...
Mei‐Yun Lin, Raluca Ilie, Alex Glocer
wiley +1 more source
A VLBI Resolution of the Pleiades Distance Controversy [PDF]
, 2014 Because of its proximity and its youth, the Pleiades open cluster of stars has been extensively studied and serves as a cornerstone for our understanding of the physical properties of young stars. This role is called into question by the "Pleiades distance controversy" wherein the cluster distance of 120.2+/-1.5 pc as measured by the optical space ...
arxiv +1 more source
Ecosphere, Volume 16, Issue 3, March 2025.Abstract Mangroves are critically important ecosystems that are highly vulnerable to hurricanes. This study assessed the impact of Hurricane Maria on mangrove canopy heights and vegetation at two sites in Puerto Rico—La Parguera (southwest) and the Northeast Ecological Corridor (northeast)—and examined factors influencing recovery. Using remote sensing
Jahnelle Howe +4 more
wiley +1 more source
Several notes on the melting behavior of mesoporous materials
Физико-химические аспекты изучения кластеров, наноструктур и наноматериаловIn this paper, the melting temperature dependence on geometric characteristics (volume and shape) of pores distributed in the mesoporous material has been analyzed.
A.V. Shishulin +2 more
doaj +1 more source
PLEIADES SYSTEM ARCHITECTURE AND MAIN PERFORMANCES [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012 France, under the leadership of the French Space Agency (CNES), has set up a cooperative program with Austria, Belgium, Spain, Sweden, in order to develop a space Earth Observation system called PLEIADES.
M. A. Gleyzes, L. Perret, P. Kubik
doaj +1 more source
Remote Sensing for Monitoring Macroplastics in Rivers: A Review
WIREs Water, Volume 12, Issue 2, March/April 2025.Panoramic of remote sensing platforms for monitoring plastics in riverine environments. Platform elevation is directly related to image spatial resolution; see the example of a plastic bottle captured from Unmanned Aerial Systems (UASs). Letters stand for drone (D) and satellite (S) platforms: (Sa) Sentinel‐2; (Sb) Sentinel‐1 SAR; (Sc) Pleiades ...
Ashenafi Tadesse Marye +9 more
wiley +1 more source
Brown Dwarfs in the Pleiades, a deep IJK survey [PDF]
arXiv, 1997 An area large enough (180 sq arcmin) to put constraints on a possible low mass brown dwarf population in the Pleiades has been surveyed to very faint magnitudes in I, J and K. The completeness limit, I=21.6, corresponds to a mass of 0.01 Msun for a cluster age of 70 Myr and 0.035 Msun for 120 Myr.
arxiv
Spatial and Temporal Variability of the Surface Mass Balance of Debris‐Covered Glacier Tongues
Journal of Geophysical Research: Earth Surface, Volume 130, Issue 3, March 2025.Abstract Himalayan glaciers often have a supraglacial debris layer that causes spatial heterogeneity in surface changes and mostly reduces melt. Despite this, debris‐covered glaciers lose mass at similar rates to debris‐free glaciers. Understanding related processes is crucial for assessing impacts on water resources and hazards.
P. D. A. Kraaijenbrink, W. W. Immerzeel
wiley +1 more source
Confirmatory factor model of hypertension [PDF]
Компьютерные исследования и моделирование, 2012 A new method of constructing orthogonal factor model based on the method of correlation pleiades and confirmatory factor analysis. A new algorithm for confirmatory factor analysis.
Vladimir Alexeevich Shovin
doaj +1 more source