Results 71 to 80 of about 5,356 (321)

J01020100-7122208: an accreted evolved blue straggler that wasn't ejected from a supermassive black hole [PDF]

open access: green, 2021
Danielle de Brito Silva   +5 more
openalex   +1 more source

Signatures of Edge States in Antiferromagnetic Van der Waals Josephson Junctions

open access: yesAdvanced Materials, EarlyView.
ABSTRACT The combination of superconductivity and magnetic textures leads to unconventional superconducting phenomena, including new correlated and topological phases. Van der Waals (vdW) materials emerge as a versatile platform for exploring the interplay between these two competing orders.
Celia González‐Sánchez   +10 more
wiley   +1 more source

HIP 8522: A Puzzling Young Solar Twin with the Lowest Detected Lithium Abundance

open access: yesThe Astrophysical Journal
We 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

Investigating 16 Open Clusters in the Kepler/K2–Gaia DR3 Field. I. Membership, Binary Systems, and Rotation

open access: yesThe Astrophysical Journal Supplement Series, 2023
Using data from Gaia Data Release 3 and Kepler/K2, we present a catalog of 16 open clusters with ages ranging from 4–4000 Myr that provides detailed information on membership, binary systems, and rotation. We assess the memberships in 5D phase space, and
Liu Long   +11 more
doaj   +1 more source

Spectroscopic and asteroseismic analysis of the remarkable main-sequence A star KIC 11145123 [PDF]

open access: yes, 2017
A spectroscopic analysis was carried out to clarify the properties of KIC 11145123 -- the first main-sequence star with a determination of core-to-surface rotation -- based on spectra observed with the High Dispersion Spectrograph (HDS) of the Subaru ...
Kurtz, Donald W.   +6 more
core   +2 more sources

Thermal‐Driven Diode Polarity Switching From Competing Helical Superconducting States in WTe2/α‐Fe2O3 Heterostructures

open access: yesAdvanced Materials, EarlyView.
A Nb‐proximitized Josephson junction based on a WTe2/α‐Fe2O3 heterostructure exhibits a robust superconducting diode effect with programmable polarity. The diode direction can be trained by magnetic fields and switched by temperature cycling, revealing tunable finite‐momentum pairing states and competing superconducting states in symmetry‐broken ...
Enze Zhang   +9 more
wiley   +1 more source

A spectroscopic study of the blue stragglers in M67 [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2008
Based on spectrophotometric observations from the Guillermo Haro Observatory (Cananea, Mexico), a study of the spectral properties of the complete sample of 24 blue straggler stars (BSs) in the old Galactic open cluster M67 (NGC 2682) is presented. All spectra, calibrated using spectral standards, were recalibrated by means of photometric magnitudes in
Liu, G. Q.   +5 more
openaire   +2 more sources

New Directions in Focused Ion Beam Induced Deposition for the Nanoprinting of Functional 3D Heterostructures

open access: yesAdvanced Materials Technologies, EarlyView.
Here, it is shown that focused ion beam induced deposition (FIBID) using helium and neon ions enables advanced high‐resolution 3D nanoprinting achieving precise multimaterial architectures and engineered internal voids. Thus, FIBID with finely focused noble gas ion species is presented as a unique platform for designing functional nanomaterials for ...
Frances Isabel Allen
wiley   +1 more source

Deep multi-telescope photometry of NGC 5466. I. Blue Stragglers and binary systems

open access: yes, 2013
We present a detailed investigation of the radial distribution of blue straggler star and binary populations in the Galactic globular cluster NGC 5466, over the entire extension of the system.
Beccari, G.   +6 more
core   +1 more source

The Evolution of Blue Stragglers Formed Via Stellar Collisions [PDF]

open access: yes, 1998
We have used the results of recent smoothed particle hydrodynamic simulations of colliding stars to create models appropriate for input into a stellar evolution code.
C. J. Pritchet   +10 more
core   +3 more sources

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