Results 231 to 240 of about 13,046,567 (395)

Cosmic-Ray induced diffuse emissions from the Milky Way and Local Group galaxies [PDF]

, 2011
T. A. Porter
openalex   +1 more source

The HST Legacy Archival Uniform Reduction of Local Group Imaging (LAURELIN). I. Photometry and Star Formation Histories for 36 Ultra-faint Dwarf Galaxies

The Astrophysical Journal
We present uniformly measured resolved stellar photometry and star formation histories (SFHs) for 36 nearby (≲400 kpc) ultra-faint dwarf galaxies (UFDs; −7.1 ≤ M _V ≤ +0.0) from new and archival Hubble Space Telescope (HST) imaging.
Meredith J. Durbin, Yumi Choi, Alessandro Savino, Daniel R. Weisz, Andrew E. Dolphin, Julianne J. Dalcanton, Myoungwon Jeon, Nitya Kallivayalil, Ting S. Li, Andrew B. Pace, Ekta Patel, Elena Sacchi, Evan D. Skillman, Sangmo Tony Sohn, Roeland P. van der Marel, Andrew Wetzel, Benjamin F. Williams   +16 more
doaj   +1 more source

Computers in Our Cosmos: Intersections in Geographies of Care, Abolition Geographies and Worker Movements

Transactions of the Institute of British Geographers, EarlyView.
ABSTRACT AI assistants on spacecrafts. Netflix streamed through inter‐planetary communication networks. Colonies on Mars by 2050. While the glamorous public–private ventures into outer space curate discussions on the technical specificities of these proposed projects, this paper reorients discussions on such developments through critical frameworks of ...
Yung Au
wiley   +1 more source

Low‐dose X‐ray radiation induces an adaptive response: A potential countermeasure to galactic cosmic radiation exposure

Experimental Physiology, EarlyView.
Abstract Space exploration involves many dangers including galactic cosmic radiation (GCR). This class of radiation includes high‐energy protons and heavy ionizing ions. NASA has defined GCR as a carcinogenic risk for long‐duration space missions. To date, no clear strategy has been developed to counter chronic GCR exposure.
Siena Edwards, Jessica Adams, Anastasia Tchernikov, John G. Edwards   +3 more
wiley   +1 more source

A UNIONS view of the brightest central galaxies of candidate fossil groups [PDF]

, 2023
Aline Chu, F. Durret, A. Ellien, F. Sarron, C. Adami, I. Márquez, N. Martinet, Thomas de Boer, K. C. Chambers, Jean‐Charles Cuillandre, S. Gwyn, E.A Magnier, Alan W. McConnachie   +12 more
openalex   +1 more source

Women in space: A review of known physiological adaptations and health perspectives

Experimental Physiology, EarlyView.
Abstract Exposure to the spaceflight environment causes adaptations in most human physiological systems, many of which are thought to affect women differently from men. Since only 11.5% of astronauts worldwide have been female, these issues are largely understudied.
Millie Hughes‐Fulford, Danielle J. Carroll, Heather C. M. Allaway, Bonnie J. Dunbar, Aenor J. Sawyer   +4 more
wiley   +1 more source

50% body weight loading reduces stature increases and lumbar disc expansion from 4 h hyper‐buoyancy floatation versus 15 min sitting upright

Experimental Physiology, EarlyView.
Abstract Microgravity is associated with stature increases, back pain and post‐flight intervertebral disc (IVD) herniation. This study aims to determine whether 30 s seated 50% body weight (BW) axial loading is comparable to 15 min sitting upright in 1 g upon changes in stature, anterior lumbar IVD height (via ultrasound), passive vertebral stiffness ...
David Marcos‐Lorenzo, Christina Lysandrou, Laura Sudres, Alfonso Gil‐Martinez, Jaap Swanenburg, James Edward Clark, David Andrew Green   +6 more
wiley   +1 more source

Galaxy And Mass Assembly (GAMA): The Merging Potential of Brightest Group Galaxies [PDF]

, 2021
Kirsten Banks, Sarah Brough, Benne W. Holwerda, Andrew Hopkins, Á. R. López-Sánchez, S. Phillipps, Kevin A. Pimbblet, A. S. G. Robotham   +7 more
openalex   +1 more source

Cerebrovascular pulsatility following long duration spaceflight is associated with changes in pulse pressure and carotid artery stiffness

Experimental Physiology, EarlyView.
Abstract Central artery stiffening increases the haemodynamic pulsations transmitted downstream towards target organs, including the brain. While recent evidence suggests that long duration spaceflight is associated with reduced common carotid artery (CCA) distensibility, cerebrovascular pulsatility has not been extensively characterized in astronauts.
Roxanne Fournier, Danielle K. Greaves, J. Kevin Shoemaker, Philippe Arbeille, Richard L. Hughson, Andrew D. Robertson   +5 more
wiley   +1 more source

Searching for the brightest stars in galaxies outside the Local Group [PDF]

, 2021
Nikolay Tikhonov, Olga Galazutdinova, Olga Sholukhova, Antoniya Valcheva, Petko Nedialkov, Olga Merkulova   +5 more
openalex   +1 more source