Results 91 to 100 of about 628,144 (303)
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 straggler V106 in NGC 6791: a prototype progenitor of old single giants masquerading as young [PDF]
Monthly notices of the Royal Astronomical Society, 2018 We determine the properties of the binary star V106 in the old open cluster NGC6791. We identify the system to be a blue straggler cluster member by using a combination of groundbased and Kepler photometry and multi-epoch spectroscopy.
K. Brogaard +26 more
semanticscholar +1 more source
Néel Tensor Torque in Polycrystalline Antiferromagnets
Advanced Materials, EarlyView.This work introduces a Néel tensor torque based on a rank‐two symmetric tensor capturing spin correlations in a polycrystalline antiferromagnet. It shows the Néel tensor can be shaped and reshaped through the spin‐orbit torque (SOT) technique, enabling field‐free SOT switching with a specific polarity of the adjacent ferromagnet. This discovery opens a
Chao‐Yao Yang +4 more
wiley +1 more source
HIP 8522: A Puzzling Young Solar Twin with the Lowest Detected Lithium Abundance
The Astrophysical JournalWe present HIP 8522, a young solar twin with the lowest detected lithium abundance, potentially a field blue straggler or the result of episodic early accretion. Its stellar parameters ( T _eff = 5729 ± 7 K, $\mathrm{log}\,g$ = 4.532 ± 0.016 dex, [Fe/H]
Jhon Yana Galarza +10 more
doaj +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
This is a pre-print of a chapter for the Encyclopedia of Astrophysics (edited by I. Mandel, section editor F.R.N.
Wang, Chen, Ryu, Taeho
openaire +2 more sources
FORMATION AND EVOLUTION OF BLUE STRAGGLERS IN 47 TUCANAE [PDF]
The Astrophysical Journal, 2016 ABSTRACT Blue stragglers (BSS) are stars whose position in the color–magnitude diagram (CMD) places them above the main sequence (MS) turn-off (TO) point of a star cluster. Using data from the core of 47 Tuc in the ultraviolet (UV), we have identified various stellar populations in the CMD, and used their radial distributions to study ...
Ryan Goldsbury +5 more
openaire +4 more sources
Altermagnetic Band Splitting in 10 nm Epitaxial CrSb Thin Films
Advanced Materials, EarlyView.Thin film altermagnets are attractive for potential spintronic applications. How thin can we make an altermagnet before quantum confinement perturbs the distinctive band structure? This paper uses angle‐resolved photoemission spectroscopy to show that the canonical g‐wave altermagnet, NiAs‐type CrSb, grown by molecular beam epitaxy, preserves its ...
Sandra Santhosh +20 more
wiley +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.A novel inorganic/polymer‐composite encapsulation strategy utilizing transparent conductive composites (TCC) is introduced to boost stabilities of perovskite solar cells (PSCs). Positioned between two indium zinc oxide (IZO) layers, TCC permits electrical charge transport while reducing moisture and oxygen permeability.
Kai Outlaw‐Spruell +5 more
wiley +1 more source