Results 11 to 20 of about 8,698,213 (252)

Masses and Densities of Dwarf Planet Satellites Measured with ALMA

open access: yesThe Planetary Science Journal, 2023
We have used the Atacama Large Millimeter/submillimeter Array to measure precise absolute astrometric positions and detect the astrometric wobble of dwarf planet Orcus and its satellite Vanth over a complete orbit.
Michael E. Brown, Bryan J. Butler
doaj   +1 more source

Constraining the Nature of Dark Matter with the Star-formation History of the Faintest Local Group Dwarf Galaxy Satellites [PDF]

open access: yesThe Astrophysical Journal, 2017
Abstract Λ warm dark matter (ΛWDM), realized by collisionless particles of 1–3 keV, has been proposed as an alternative scenario to Λ-Cold-Dark Matter (ΛCDM) for the dwarf galaxy scale discrepancies. We present an approach to test the viability of such WDM models using star-formation histories (SFHs) of the dwarf spheroidal galaxies ...
Chau, Alice   +2 more
openaire   +3 more sources

Typology of forest hunting grounds [PDF]

open access: yesСибирский лесной журнал, 2023
The analysis of the developed classification schemes of forest hunting grounds is given. Previously, forest typology was taken as a basis with a 4-level division (category-class-group of types-type).
A. G. Rassolov, A. S. Shishikin
doaj   +1 more source

Jupiter’s Early Luminosity May Have Driven off Io’s Initial Water Inventory

open access: yesThe Planetary Science Journal, 2023
After its formation, Jupiter was substantially more luminous than it is at the present day (10 ^4 times). Right after formation, the inner satellites Io and Europa would have received an order-of-magnitude larger incoming flux from Jupiter, than solar ...
Carver J. Bierson   +3 more
doaj   +1 more source

Remote Study of Aufeis along the ‘Power of Siberia’ Gas Pipeline in the Aldan River Basin [PDF]

open access: yesE3S Web of Conferences, 2020
The ‘Power of Siberia’ gas pipeline route passes through the territories of South-West and South Yakutia, where the natural conditions are characterized by severe climatic, complex engineering geological and geocryological conditions.
Nogovitsyn Dmitry D.   +2 more
doaj   +1 more source

Anisotropic Satellite Galaxy Quenching: A Unique Signature of Energetic Feedback by Supermassive Black Holes?

open access: yesThe Astrophysical Journal Letters, 2023
The quenched fraction of satellite galaxies is aligned with the orientation of the halo’s central galaxy, such that on average, satellites form stars at a lower rate along the major axis of the central.
Juliana S. M. Karp   +2 more
doaj   +1 more source

The Application of a Convolutional Neural Network for the Detection of Contrails in Satellite Imagery

open access: yesRemote Sensing, 2023
This study presents a novel approach for the detection of contrails in satellite imagery using a convolutional neural network (CNN). Contrails are important to monitor because their contribution to climate change is uncertain and complex.
Jay P. Hoffman   +3 more
doaj   +1 more source

How frequent is natural cloud seeding from ice cloud layers ( < −35 °C) over Switzerland? [PDF]

open access: yesAtmospheric Chemistry and Physics, 2021
Clouds and cloud feedbacks represent one of the largest uncertainties in climate projections. As the ice phase influences many key cloud properties and their lifetime, its formation needs to be better understood in order to improve climate and weather ...
U. Proske   +4 more
doaj   +1 more source

Planning Structure Transformation Strategies for Satellite Cities of the Minsk Agglomeration

open access: yesНаука и техника, 2020
Determination of  strategies for the formation of satellite cities of Minsk is the basis for the development of a polycentric model of the metropolitan agglomeration.
N. I. Zholud’
doaj   +1 more source

Study and Analysis of Landslide Potential Us-ing Numerical Modeling (A Case Study: Ghaen-Afin Roadway in Southern Khorasan) [PDF]

open access: yesپژوهش‌های زیرساخت‌های عمرانی, 2019
Steep slopes developed on the loose ground, either natural or artificial, are prone to landslide phenomena. During con-struction activities for the development of new Qaen-Afin road in South Khorasan and adjacent to Ravoshk village, a sudden landslide ...
Hossain Noferesti   +2 more
doaj   +1 more source

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