Results 41 to 50 of about 486,911 (258)

Lifetimes of interstellar dust from cosmic ray exposure ages of presolar silicon carbide

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2020
Significance Dating of interstellar dust directly with astronomical methods is not possible. Neither is dating based on the decay of long-lived radioactive nuclides, due to current analytical limitations and unknown initial isotopic compositions. Here we
P. Heck   +9 more
semanticscholar   +1 more source

A Multiwavelength Investigation of Dust and Stellar Mass Distributions in Galaxies: Insights from High-resolution JWST Imaging

open access: yesThe Astrophysical Journal, 2023
We study the morphological properties of mid-infrared selected galaxies at 1.0 < z < 1.7 in the SMACS J0723.3-7327 cluster field to investigate the mechanisms of galaxy mass assembly and structural formation at cosmic noon.
Zhaoran Liu   +2 more
doaj   +1 more source

Cosmic rays and space weather: effects on global climate change [PDF]

open access: yesAnnales Geophysicae, 2012
We consider possible effects of cosmic rays and some other space factors on the Earth's climate change. It is well known that the system of internal and external factors formatting the climate is very unstable; decreasing planetary temperature leads ...
L. I. Dorman, L. I. Dorman
doaj   +1 more source

STUDY ON THE EXTRATERRESTRIAL MATERIAL AT ANTARCTICA (I)

open access: yesAntarctic Record, 1968
The study of the extraterrestrial material collected in Antarctica is reported. The extrateirestnal material comprises cosmic dust, tektite, and meteorite.
Makoto SHIMA, Hideo YABUKI
doaj   +1 more source

STUDY ON THE EXTRATERRESTRIAL MATERIAL IN ANTARCTICA (II) : SEASONAL VARIATION AT SYOWA STATION AND LATITUDE EFFECT ON COSMIC DUST

open access: yesAntarctic Record, 1969
Measurements of cosmic dust as a function of the seasonal variation were carried out by the air filtration method at Syowa Station (from January to October, 1967).
Makoto SHIMA   +2 more
doaj   +1 more source

The Purport of Space Telescopes in Supernova Research

open access: yesUniverse, 2023
The violent stellar explosions known as supernovae have received especially strong attention in both the research community and the general public recently.
József Vinkó   +2 more
doaj   +1 more source

DustPedia: A Definitive Study of Cosmic Dust in the Local Universe [PDF]

open access: yes, 2016
The European Space Agency has invested heavily in two cornerstones missions: Herschel and Planck. The legacy data from these missions provides an unprecedented opportunity to study cosmic dust in galaxies so that we can, for example, answer fundamental ...
J. Davies   +22 more
semanticscholar   +1 more source

Cosmic dust in the stratosphere [PDF]

open access: yesJournal of Geophysical Research, 1968
Cosmic dust in one to 100 micron size range in stratosphere, noting balloon-borne collecting technique and upper limit on total terrestrial accretion ...
David W. Parkin   +2 more
openaire   +2 more sources

Formation of Cosmic Dust Bunnies [PDF]

open access: yesIEEE Transactions on Plasma Science, 2007
Planetary formation is an efficient process now thought to take place on a relatively short astronomical time scale. Recent observations have shown that the dust surrounding a protostar emits more efficiently at longer wavelengths as the protoplanetary disk evolves, suggesting that the dust particles are coagulating into fluffy aggregates, "much as ...
Matthews, Lorin Swint.   +3 more
openaire   +4 more sources

Resolving the ISM at the Peak of Cosmic Star Formation with ALMA: The Distribution of CO and Dust Continuum in z ∼ 2.5 Submillimeter Galaxies [PDF]

open access: yesAstrophysical Journal, 2018
We use Atacama Large Millimeter Array (ALMA) observations of four submillimeter galaxies (SMGs) at z ∼ 2–3 to investigate the spatially resolved properties of the interstellar medium (ISM) at scales of 1–5 kpc (0.″1–0.″6).
G. Rivera   +20 more
semanticscholar   +1 more source

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