Results 11 to 20 of about 562,498 (283)
Constraining the Nature of Dark Matter with the Star-formation History of the Faintest Local Group Dwarf Galaxy Satellites [PDF]
The 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
Masses and Densities of Dwarf Planet Satellites Measured with ALMA
The 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
Remote Study of Aufeis along the ‘Power of Siberia’ Gas Pipeline in the Aldan River Basin [PDF]
E3S 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
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Jupiter’s Early Luminosity May Have Driven off Io’s Initial Water Inventory
The 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
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How frequent is natural cloud seeding from ice cloud layers ( < −35 °C) over Switzerland? [PDF]
Atmospheric 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
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The 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
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Remote 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
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The rotationally stabilized VPOS and predicted proper motions of the Milky Way satellite galaxies [PDF]
, 2013 The satellite galaxies of the Milky Way (MW) define a vast polar structure (VPOS), a thin plane perpendicular to the MW disc. Proper motion (PM) measurements are now available for all of the 11 brightest, `classical' satellites and allow an updated ...
Kroupa, Pavel, Pawlowski, Marcel S.
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A quantitative explanation of the observed population of Milky Way satellite galaxies [PDF]
, 2009 We revisit the well known discrepancy between the observed number of Milky Way (MW) dwarf satellite companions and the predicted population of cold dark matter (CDM) sub-halos, in light of the dozen new low luminosity satellites found in SDSS imaging ...
Adelman-McCarthy +67 more
core +3 more sources
Hierarchical galaxy formation and substructure in the Galaxy's stellar halo [PDF]
, 2000 We develop an explicit model for the formation of the stellar halo from tidally disrupted, accreted dwarf satellites in the cold dark matter (CDM) framework, focusing on predictions testable with the Sloan Digital Sky Survey (SDSS) and other wide-field ...
Andrey V. Kravtsov +9 more
core +2 more sources