Results 121 to 130 of about 744 (267)

The massive Stellar Content in Starburst Galaxies and its Impact on Galaxy Evolution

open access: yes, 1999
Invited talk to the conference "The Evolution of Glaxies on Cosmological Timescales" 13 pages+8 ...
openaire   +2 more sources

The Effect of Deep Brain Stimulation on Sleep and Cognition in Patients With Parkinson's Disease

open access: yesJournal of Sleep Research, EarlyView.
ABSTRACT Sleep–wake disturbances and cognitive decline are among the most common nonmotor symptoms of Parkinson's disease (PD). Deep brain stimulation (DBS) can successfully alleviate motor symptoms. However, the impact on sleep–wake disturbances and cognitive decline, and their interaction, is yet unclear.
Monique E. H. Valk‐Geuke   +5 more
wiley   +1 more source

Noble gases and nitrogen in material from asteroid Bennu

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract We report the elemental and isotopic abundances of all stable noble gases (helium, neon, argon, krypton, and xenon) in eight particles from asteroid Bennu returned by NASA's OSIRIS‐REx mission. We also report nitrogen abundances and isotopic ratios that were analyzed alongside neon and argon in four additional Bennu particles.
B. Marty   +7 more
wiley   +1 more source

A Galactic Self-portrait: Density Structure and Integrated Properties of the Milky Way Disk

open access: yesThe Astrophysical Journal
The evolutionary history of the Milky Way disk is imprinted in the ages, positions, and chemical compositions of individual stars. In this study, we derive the intrinsic density distribution of different stellar populations using the final data release ...
Julie Imig   +25 more
doaj   +1 more source

Shock metamorphic effects in Itokawa phosphates: A comparison with megaregolith‐derived meteorites

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract Returned regolith samples from the asteroid Itokawa provide a unique opportunity to compare shock metamorphic effects in unconsolidated regolith materials with those preserved in lithified meteorites, that is, megaregolith. We analyzed four Itokawa particles (Ueda—RA‐QD02‐0519, Narahara—RA‐QD02‐0573, Domon—RA‐QD02‐0588, Ishiuchi—RX‐MD03‐0212 ...
E. Dobrică, A. N. Krot, A. J. Brearley
wiley   +1 more source

Al‐Khadhaf: The first camera‐observed (H5–6) meteorite fall from Oman

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract A fireball camera system installed in 2022 by the Oman Meteorite Monitoring Project (OMMP) as part of the Global Fireball Observatory (GFO) recorded a 3.2 s fireball on March 8, 2022 at 8:15 p.m. UTC. A meteoroid of 4 ± 2 kg entered the atmosphere at 14.0 km/s.
Anna Zappatini   +18 more
wiley   +1 more source

Discovery of a Double-core Dwarf Galaxy in a Major Wet Merger: MCG+08-16-005

open access: yesThe Astronomical Journal
I present the discovery of a dwarf galaxy with double cores, MCG+08-16-005, observed by an Integral Field Unit. Based on photometric and spatially resolved spectroscopic analyses, the galaxy is suggested as an ongoing dwarf-dwarf merger. MCG+08-16-005 is
Youngdae Lee
doaj   +1 more source

Model Calculations for Cosmogenic Nuclides in Meteorites and the Lunar Surface. 1. Long‐lived Radionuclides

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract Production rates for the cosmogenic radionuclides 10Be, 14C, 26Al, 36Cl, 41Ca, 53Mn, and 60Fe in a large variety of meteorites, that is, ordinary chondrites (H, L, LL), carbonaceous chondrites, HED meteorites, ureilites, Martian meteorites, and iron meteorites and in the uppermost ~2 m of the lunar surface are modeled.
Ingo Leya
wiley   +1 more source

Automation and Augmentation in Theological Perspective

open access: yesModern Theology, EarlyView.
Abstract AI enables forms of automation that threaten unemployment and deskilling, eliminating important opportunities for the development of virtue. The concomitant loss of virtue and meaningful employment makes it a theological problem from the perspective of Catholic social teaching and theological anthropology.
Paul Scherz
wiley   +1 more source

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