Results 51 to 60 of about 439,382 (287)

A Tangle of Stellar Streams in the North Galactic Cap [PDF]

open access: yesThe Astrophysical Journal Letters, 2018
Abstract Stellar halo substructures were identified using statistical photometric parallax of blue main-sequence turnoff stars from 14 Sloan Digital Sky Survey stripes in the north Galactic cap. Four structures are consistent with previous measurements of the Sagittarius dwarf tidal stream: the leading tail, the “bifurcated” stream, the ...
Jake Weiss   +2 more
openaire   +2 more sources

Elemental Abundances in M31: Individual and Coadded Spectroscopic [Fe/H] and [α/Fe] throughout the M31 Halo with SPLASH

open access: yesThe Astrophysical Journal, 2023
We present spectroscopic chemical abundances of red giant branch stars in Andromeda (M31), using medium-resolution ( R ∼ 6000) spectra obtained via the Spectroscopic and Photometric Landscape of Andromeda’s Stellar Halo survey.
J. Leigh Wojno   +8 more
doaj   +1 more source

Catalog of Mock Stellar Streams in Milky Way-Like Galaxies

open access: yesThe Open Journal of Astrophysics
Dynamically cold stellar streams from tidally dissolved globular clusters (GCs) serve as excellent tools to measure the Galactic mass distribution and show promise to probe the nature of dark matter.
Colin Holm-Hansen   +2 more
doaj   +1 more source

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

open access: yesFEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace   +6 more
wiley   +1 more source

Resource-aware mining of data streams [PDF]

open access: yes, 2005
Mining data streams has raised a number of research challenges for the data mining community. These challenges include the limitations of computational resources, especially because mining streams of data most likely be done on a mobile device with ...
Gaber, Mohamed Medhat   +11 more
core   +1 more source

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

Dancing Streams In Merging Halos: Stellar Streams in a MW--LMC-like merger

open access: yesThe Open Journal of Astrophysics
Stellar streams -- formed from tidally stripped globular clusters or dwarf galaxies -- are sensitive tracers of a galaxy's accretion history and gravitational potential.
Sachi Weerasooriya   +3 more
doaj   +1 more source

Search for Stellar Streams in The Galactic Halo From Gaia DR2, GALAH DR2, RAVE DR5 and LAMOST DR4 Data [PDF]

open access: yesEPJ Web of Conferences, 2020
Stellar streams are stars which are trapped in the same potensial caused by dynamical resonance or tidal force. We aim to analyze kinematic sub- structures (streams) in the Galactic halo by V vs √ U2+ 2V 2 planes of Arifyanto & Fuchs.
Made Kartika Wijayanti Ni   +2 more
doaj   +1 more source

STEllAR-GROUP/octotiger: Kokkos kernels

open access: yes, 2021
What's Changed Branch by @diehlpk in https://github.com/STEllAR-GROUP/octotiger/pull/341 Add Zenodo DOI by @diehlpk in https://github.com/STEllAR-GROUP/octotiger/pull/342 Docu by @diehlpk in https://github.com/STEllAR-GROUP/octotiger/pull/347 Add ...
Biddiscombe, John   +21 more
core   +1 more source

Avidin is evolutionarily conserved in fish but dispensable for development and resistance against Streptococcus agalactiae in zebrafish

open access: yesFEBS Open Bio, EarlyView.
The presence of biotin‐binding avidin proteins in fish and their biological significance are poorly characterized. We cataloged fish avidins and demonstrate that they are widely present and evolutionarily conserved. We created avd knockout zebrafish and show that zebavidin is dispensable for development and that resistance of avd knockout embryos in ...
Anni K. Saralahti   +5 more
wiley   +1 more source

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