Results 101 to 110 of about 10,524 (236)
Brown Dwarfs in the Pleiades II. A deep optical and near-infrared survey [PDF]
arXiv, 1998 The brown dwarf population in the Pleiades cluster has been probed in a deep 850 arcmin2 RIJK survey. The survey is complete to I=21.4 in 76% of the area and to I=20.2 in the remaining 24%. Photometry of 32 previously known members is presented together with 8 new candidates, four of which are below the brown dwarf limit. The faintest one is the lowest
arxiv
Rotational velocities of low-mass stars in the Pleiades and Hyades [PDF]
, 1999 We have obtained high-resolution spectra of 89 M dwarf members of the Pleiades and Hyades and have derived radial velocities, H-alpha equivalent widths, and spectroscopic rotational velocities for these stars. Typical masses of the newly-observed Pleiades and Hyades stars are ~ 0.4 M_{\sun} and ~ 0.2 M_{\sun}, respectively.
arxiv +1 more source
Hollows on Mercury: Creation and Analysis of a Global Reference Catalog With Deep Learning
Journal of Geophysical Research: Machine Learning and Computation, Volume 2, Issue 1, March 2025.Abstract Hollows are geologically young depressions on Mercury, most likely associated with the loss of volatile species. The distribution and morphometric properties of hollows provide information about the overall volatile budget of Mercury's (shallow) subsurface, with significant implications for our understanding of the evolution of Mercury and ...
Valentin T. Bickel +2 more
wiley +1 more source
Mapping with Pléiades - End-to-End Workflow
Remote Sensing, 2019 In this work, we introduce an end-to-end workflow for very high-resolution satellite-based mapping, building the basis for important 3D mapping products: (1) digital surface model, (2) digital terrain model, (3) normalized digital surface model and (4 ...
R. Perko, J. Raggam, P. Roth
semanticscholar +1 more source
Simulating Extreme Space Weather With Kinetic Magnetotail Reconnection
Space Weather, Volume 23, Issue 3, March 2025.Abstract Extreme space weather events require particle‐in‐cell (PIC) modeling to capture the kinetic physics of magnetic reconnection that is not present in magnetohydrodynamic (MHD) models. The MHD with Adaptively Embedded Particle‐In‐Cell (MHD‐AEPIC) model (Chen et al., 2020, https://doi.org/10.1029/2020ea001331) builds on the operational Michigan ...
T. B. Keebler +3 more
wiley +1 more source
Journal of Religious History, Volume 49, Issue 1, Page 21-40, March 2025.Famed for its austerity, Jansenism nonetheless prompted a slew of salacious street‐songs throughout the seventeenth and eighteenth centuries. If historians have increasingly examined early modern urban singing practices, underlining the social porosity and intergenerational hold of many street‐songs, little research has been devoted to unpicking what ...
Tiéphaine Thomason
wiley +1 more source
INHERITANCE AND INCEST: TOWARD A LÉVI‐STRAUSSIAN READING OF MONTESQUIEU'S DE L'ESPRIT DES LOIS1
History and Theory, Volume 64, Issue 1, Page 46-74, March 2025.ABSTRACT The premise of this article is that Montesquieu, while seen as an Enlightenment thinker who contributed centrally to the development of the social sciences before the period of discipline formation in the nineteenth century, is generally appreciated in only the vaguest of terms.
Paul Cheney
wiley +1 more source
IEEE Access, 2020 In conventional hybrid reversible data hiding in encrypted images (RDHEI), the error-free extracted-bit rate condition in recovered images cannot be fully achieved (reversible) as the block size decreases because of the fluctuation function used, which ...
Gunawan Wibisono +3 more
doaj +1 more source
Confirming the least massive members of the Pleiades star cluster [PDF]
, 2017 We present optical photometry (i- and Z-band) and low-resolution spectroscopy (640-1015 nm) of very faint candidate members (J = 20.2-21.2 mag) of the Pleiades star cluster (120 Myr). The main goal is to address their cluster membership via photometric, astrometric, and spectroscopic studies, and to determine the properties of the least massive ...
arxiv +1 more source
Hydrological Processes, Volume 39, Issue 2, February 2025.The cryosphere represents a key hydrological control on local ecosystems in the semiarid Andes of Chile. This study uses the Cold Regions Hydrological Model to quantify glacio‐hydrological processes in a sub‐catchment of the Elqui River catchment for two relatively dry years (2019–2020 and 2020–2021). Results indicate that sublimation accounted for 66%–
Eduardo Yáñez San Francisco +2 more
wiley +1 more source