Results 51 to 60 of about 151,167 (221)

GlobULeS. IV. UVIT/AstroSat Detection of Extremely Low Mass White Dwarf Companions to Blue Straggler Stars in NGC 362

open access: yesThe Astrophysical Journal, 2023
We report the discovery of extremely low mass white dwarfs (ELM WDs) as a companion of blue straggler stars (BSSs) in the Galactic globular cluster NGC 362 using images from AstroSat's Ultra Violet Imaging Telescope (UVIT). Spectral energy distributions (
Arvind K. Dattatrey   +6 more
doaj   +1 more source

Advances in analytical microfluidic workflows for differential cancer diagnosis

open access: yesNano Select, Volume 4, Issue 1, Page 1-47, January 2023., 2023
Microfluidics holds a great potential for an analytical examination of liquid biopsy and the development of point‐of‐care testing devices. This review overviews fundamentals and technological breakthroughs of immunolabeled and label‐free analytical microfluidic devices for screening and examining CTCs, describes engineering‐driven workflows for ...
Morteza Hasanzadeh Kafshgari   +1 more
wiley   +1 more source

STELLAR COLLISIONS AND BLUE STRAGGLER STARS IN DENSE GLOBULAR CLUSTERS [PDF]

open access: yesThe Astrophysical Journal, 2013
Blue straggler stars (BSS) are abundantly observed in all Galactic globular clusters (GGC) where data exist. However, observations alone cannot reveal the relative importance of various formation channels or the typical formation times for this well studied population of anomalous stars.
Chatterjee, S.   +3 more
openaire   +5 more sources

Linking chronic stress to insomnia symptoms in older adults: The role of stress co‐occurrence during the pandemic

open access: yesResearch in Nursing &Health, Volume 46, Issue 1, Page 68-79, February 2023., 2023
Abstract Studies examining the associations of chronic stressors with sleep health in older adults have shown conflicting results. While the COVID‐19 pandemic increased perceived stress at the population level, less is known about chronic stressors experienced by older adults in the context of the COVID‐19 pandemic and its impact on sleep health in an ...
Wan‐Chin Kuo   +4 more
wiley   +1 more source

From passenger to citizen—portraits of learning to be a physiotherapist

open access: yesPhysiotherapy Research International, Volume 28, Issue 1, January 2023., 2023
Abstract Background and Purpose Understanding the experiences of learners—and future graduates—is integral to their professional development and to the development of the profession. This paper adds to understanding of physiotherapy student experiences by exploring the ways students and recent graduates approach, learn about, connect with and form a ...
Sarah Barradell
wiley   +1 more source

On the Variability of Blue Straggler Stars in the Globular Cluster M53 [PDF]

open access: yesJournal of Astronomy and Space Sciences, 1998
We present the results of a search for photometric variable blue straggler stars (BSSs) in the globular cluster M53. Six of the 151 probable BSSs are identified as variable candidates based on the robust variable star detection technique of Welch ...
Soo-Chang Rey   +2 more
doaj  

A Megacam Survey of Outer Halo Satellites. II. Blue Stragglers in the Lowest Stellar Density Systems [PDF]

open access: yes, 2013
We present a homogeneous study of blue straggler stars across ten outer halo globular clusters, three classical dwarf spheroidal and nine ultra-faint galaxies based on deep and wide-field photometric data taken with MegaCam on the Canada-France-Hawaii Telescope. We find blue straggler stars to be ubiquitous among these Milky Way satellites.
arxiv   +1 more source

Spray‐Dried Photonic Balls with a Disordered/Ordered Hybrid Structure for Shear‐Stress Indication

open access: yesSmall, Volume 18, Issue 48, December 1, 2022., 2022
Shear‐stress indicators in the micrometer range, where stress can be detected with the bare eye, are suitable for various applications. For this purpose, supraparticles in form of photonic balls with a disordered–ordered core–shell hybrid structure are investigated.
Sarah Wenderoth   +6 more
wiley   +1 more source

The Origin of Young Stellar Populations in NGC 1783: Accretion of External Stars

open access: yesThe Astrophysical Journal
The presence of young stellar populations in the Large Magellanic Cloud cluster NGC 1783 has caught significant attention, with suggestions ranging from it being a genuine secondary stellar generation to a population of blue straggler stars or simply ...
Li Wang   +6 more
doaj   +1 more source

The Blue Stragglers of the Old Open Cluster NGC 188 [PDF]

open access: yes, 2014
The old (7 Gyr) open cluster NGC 188 has yielded a wealth of astrophysical insight into its rich blue straggler population. Specifically, the NGC 188 blue stragglers are characterized by: A binary frequency of 80% for orbital periods less than $10^4$ days;Typical orbital periods around 1000 days;Typical secondary star masses of 0.5 M$_{\odot}$; At ...
arxiv   +1 more source

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