Results 161 to 170 of about 12,886 (274)

Enhancing Realism in Holographic Augmented Reality Displays Through Occlusion Handling

Laser &Photonics Reviews, EarlyView.
The proposed optical‐see‐through holographic AR display with occlusion support presents highly realistic 3D AR scenes by projecting speckle‐suppressed, high‐contrast 3D holographic virtual images onto the corresponding real‐scene masks. By leveraging the occlusion capability, virtual shadows based on a Poisson distribution can also be rendered for the ...
Woongseob Han, Chanseul Lee, Jae‐Hyeung Park   +2 more
wiley   +1 more source

Ultra–Lithium‐deficient Halo Stars and Blue Stragglers: A Common Origin? [PDF]

, 2001
Sean G. Ryan, Timothy C. Beers, Toshitaka Kajino, Katarina Rosolankova   +3 more
openalex   +1 more source

A Galactic Center Origin for HE 0437-5439, the Hypervelocity Star near the Large Magellanic Cloud

, 2010
We use Hubble Space Telescope imaging to measure the absolute proper motion of the hypervelocity star (HVS) HE 0437-5439, a short-lived B star located in the direction of the Large Magellanic Cloud (LMC).
Anderson, Jay, Bond, Howard E., Brown, Warren R., Geller, Margaret J., Gnedin, Oleg Y., Kenyon, Scott J., Livio, Mario   +6 more
core   +1 more source

The Blue Straggler Star Populations in Galactic Globular Clusters

, 2017
The puzzling existence of Blue Straggler Stars (BSSs) implies that they must form in relatively recent events, after the majority of the constituent globular cluster (GC) stellar population was formed. In this thesis we compile a large set of independent work to help understand the formation of BSSs.
openaire   +3 more sources

Artificial Spider Silk Fibers with Embedded Magnetite Nanoparticles

Macromolecular Materials and Engineering, EarlyView.
Artificial spider silk fibers are endowed with magnetic functionality by incorporating magnetite nanoparticles, with different coating and size, at nominal magnetite concentrations between 0.2 and 20 wt.%. The fibers are robust and ductile. The characteristics of the nanoparticles determine their degree of dispersion in the fibers and are crucial to ...
Lucia Del Bianco, Benjamin Schmuck, Federico Spizzo, Sabino Veintemillas‐Verdaguer, Nicola M. Pugno, Anna Rising, M. Puerto Morales, Gabriele Greco   +7 more
wiley   +1 more source

Blue Straggler Stars: A Direct Comparison of Star Counts and Population Ratios in Six Galactic Globular Clusters [PDF]

, 2003
F. R. Ferraro, Alison Sills, Robert T. Rood, B. Paltrinieri, R. Buonanno   +4 more
openalex   +1 more source

Bright Variable Stars in NGC 6819 - An Open Cluster in the Kepler Field

, 2010
We describe a variability study of the moderately old open cluster NGC 6819. We have detected 4 new detached eclipsing binaries near the cluster turnoff (one of which may be in a triple system). Several of these systems should be able to provide mass and
Antonio Talamantes, Auner, Bragaglia, David D. Balam, Eric L. Sandquist, Ferraro, Geller, Hartman, Hole, James L. Clem, Kalirai, Matthew Shetrone, Milone, Pamyatnykh, Pigulski, Rosvick, Rucinski, Russell M. Robb, Samus, Sanders, Sandquist, Shetrone, Stello, VandenBerg, Williams   +24 more
core   +1 more source

What does coexistence mean? Insight from place‐based trajectories of pastoralists and bears encounters in the Pyrenees

People and Nature, EarlyView.
Abstract The recovery of large carnivores in Europe raises issues related to sharing landscape with humans. Beyond technical solutions, it is widely recognized that social factors also contribute to shaping coexistence. In this context, scholars increasingly stress the need to adopt place‐based approaches by analysing how humans and wildlife interact ...
Alice Ouvrier, Manon Culos, Sylvie Guillerme, Antoine Doré, Helene Figari, John D. C. Linnell, Pierre‐Yves Quenette, Ruppert Vimal   +7 more
wiley   +1 more source

Variability in the Massive Open Cluster NGC 1817 from K2: A Rich Population of Asteroseismic Red Clump, Eclipsing Binary, and Main-sequence Pulsating Stars. [PDF]

Astron J, 2020
Sandquist EL, Stello D, Arentoft T, Brogaard K, Grundahl F, Vanderburg A, Hedlund A, DeWitt R, Ackerman TR, Aguilar M, Buckner AJ, Juarez C, Ortiz AJ, Richarte D, Rivera DI, Schlapfer L.   +15 more
europepmc   +1 more source

Characterization of the Blue Straggler Star Populations, through Statistical, Photometric, and Spectral Energy Distribution Analysis, in the Old Open Cluster: NGC 2243

The Astronomical Journal
We present a statistical, photometric, and spectral energy distribution (SED) analysis of the poorly studied old open cluster: NGC 2243, to characterize its blue straggler star (BSS) population.
A. H. Sheikh, Biman J. Medhi
doaj   +1 more source