Results 91 to 100 of about 627,475 (313)
An Analytic Model for Blue Straggler Formation in Globular Clusters [PDF]
, 2011 We present an analytic model for blue straggler formation in globular clusters. We assume that blue stragglers are formed only through stellar collisions and binary star evolution, and compare our predictions to observed blue straggler numbers taken from the catalogue of Leigh, Sills & Knigge (2011).
arxiv +1 more source
The blue straggler population of the old open cluster Berkeley 17 [PDF]
Astronomy & Astrophysics, 2019 Context. Blue straggler stars (BSSs) are observed in Galactic globular clusters and old open clusters. The radial distribution of BSSs has been used to diagnose the dynamical evolution of globular clusters.
S. Bhattacharya +3 more
semanticscholar +1 more source
Proposing Altermagnetic‐Ferroelectric Type‐III Multiferroics with Robust Magnetoelectric Coupling
Advanced Materials, EarlyView.Multiferroics are highly sought after for advanced technological applications. Here, a novel class of type‐III multiferroics is proposed, where ferroelectricity and altermagnetism are inherently interlocked by crystal symmetry, setting them apart from conventional multiferroics. The ferroelectric switching is shown to fully invert the spin polarization
Wei Sun +6 more
wiley +1 more source
A Megacam Survey of Outer Halo Satellites. II. Blue Stragglers in the Lowest Stellar Density Systems [PDF]
, 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
The Double Blue Straggler Sequence in NGC 2173: Yes, a Field Contamination Artifact! [PDF]
Research Notes of the AAS, 2019 Here we discuss the case of the double Blue Straggler Star (BSS) sequence recently detected in the young stellar cluster NGC 2173 in the Large Magellanic Cloud by Li et al (2018).
E. Dalessandro +5 more
semanticscholar +1 more source
Advanced Materials Interfaces, EarlyView.Their research explores van der Waals magnets and uses a perpendicularly magnetized FGT/O‐FGT/hBN heterostructure to demonstrate gate voltage‐controlled magnetization switching. They observe bidirectional voltage control of exchange bias (EB), with the highest EB magnitude of 1.4 kOe and a blocking temperature of 150 K, both among the highest for ...
Mayank Sharma +7 more
wiley +1 more source
Transitory Tidal Heating and Its Impact on Cluster Isochrones
The Astrophysical JournalThe kinetic energy in tidal flows, when converted into heat, can affect the internal structure of a star and shift its location on a color–magnitude diagram from that of standard models.
S. Jane Arthur +4 more
doaj +1 more source
The Blue Stragglers of the Old Open Cluster NGC 188 [PDF]
, 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
Detection of White Dwarf companions to Blue Straggler Stars from UVIT observations of M67 [PDF]
Proceedings of the International Astronomical Union, 2019 We investigate the old open cluster M67 using ultraviolet photometric data of Ultra-Violet Imaging Telescope in multi-filter far-UV bands. M67, well known for the presence of several blue straggler stars (BSS), has been put to detailed tests to ...
S. N +8 more
semanticscholar +1 more source
How to Achieve High Spatial Resolution in Organic Optobioelectronic Devices?
Advanced Materials Interfaces, EarlyView.This study explores how the optoelectronic properties of organic semiconductors impact on the resolution of light‐activated bioelectronic interfaces. Using photovoltage and photocurrent microscopy techniques, the authors show that H2PC/PTCDI heterojunctions enable a resolution down to 6.5 µm due to low carrier mobility along the heterojunction.
Luca Fabbri +9 more
wiley +1 more source