Results 111 to 120 of about 1,306,824 (294)

Binary Analysis and Period Study of the Long-period, High-mass-ratio Contact Binary KIC 7766185

The Astronomical Journal
We present an in-depth photometric and spectroscopic study of the contact binary KIC 7766185. Spectroscopic observations were conducted on the Mayall 4 m telescope at Kitt Peak National Observatory and used to extract radial velocities.
Conor M. Larsen, Andrej Prša
doaj   +1 more source

Ion‐Reconfigurable “N”‐Shaped Antiambipolar Behavior in Organic Electrochemical Transistors

Advanced Materials, EarlyView.
A unique N‐shaped negative differential transconductance (NDT) characteristics is demonstrated in single‐polymer organic electrochemical transistors through a sequential doping–redox–doping process driven by iodide ions. This redox‐driven mechanism enables low‐voltage, ion‐controlled reconfigurability and tunable current modulation, allowing seamless ...
Debdatta Panigrahi, Daniele Zucchelli, Zeinab Hamid, Christina Kousseff, Arup Sarkar, Aristea Pavlou, Zhitian Ling, Somayeh Kashani, Iain McCulloch, Paul W. M. Blom, Fabrizio Torricelli, Paschalis Gkoupidenis   +11 more
wiley   +1 more source

Symbiotic star candidates in Gaia Data Release 3

The Open Journal of Astrophysics
Symbiotic stars, binary pairs with a cool giant fueling accretion onto a hot compact companion, offer unique insights to our understanding of stellar evolution. Yet, only a few hundred symbiotic stars are confirmed.
Samantha E. Ball, Benjamin C Bromley, Scott J. Kenyon   +2 more
doaj   +1 more source

Thermodynamic Limits to Molecular Doping in Conjugated Polymers: A Perspective on Phase Behavior and Miscibility

Advanced Materials, EarlyView.
Molecular doping of conjugated polymers is fundamentally constrained by thermodynamic phase behavior. This Perspective reframes doping efficiency and stability in terms of miscibility limits, binodals, and solvus boundaries, highlighting the role of effective interaction parameters and charge transfer.
Somayeh Kashani, Justin Neu, Sung‐Joo Kwon, Runqio Song, Zixuan Chen, Tajah Trapier, Paschalis Gkoupidenis, David Ginger, Wei You, Jasper J. Michels, Harald Ade   +10 more
wiley   +1 more source

Spectroscopic survey of Kepler stars – II. FIES/NOT observations of A- and F-type stars

, 2017
We have analysed high-resolution spectra of 28 A and 22 F stars in the Kepler field, observed using the Fibre-Fed Échelle Spectrograph at the Nordic Optical Telescope. We provide spectral types, atmospheric parameters and chemical abundances for 50 stars.
S. J. Murphy, J. M. Lykke, G. Michalska, M. Polińska, Lykke, Julie Maria, B. Smalley, Triviño Hage, A., A. Triviño Hage, Smalley, B., E. Niemczura, K. Uytterhoeven, Uytterhoeven, K., Michalska, G., Polińska, M., J. Jessen-Hansen, Kołaczkowski, Z., Kolaczkowski, Z., Jessen-Hansen, J., Z. Kołaczkowski, Niemczura, E., Murphy, S. J., Lykke, J. M.   +21 more
core   +1 more source

Neuromorphic Electronics for Intelligence Everywhere: Emerging Devices, Flexible Platforms, and Scalable System Architectures

Advanced Materials, EarlyView.
The perspective presents an integrated view of neuromorphic technologies, from device physics to real‐time applicability, while highlighting the necessity of full‐stack co‐optimization. By outlining practical hardware‐level strategies to exploit device behavior and mitigate non‐idealities, it shows pathways for building efficient, scalable, and ...
Kapil Bhardwaj, Roshni Satheesh Babu, Yuxin Xia, Eva Bestelink, Radu Sporea, Nikos Hastas, Ioannis Zeimpekis, Dimitra G. Georgiadou, Sayani Majumdar   +8 more
wiley   +1 more source

Ten eclipsing binaries in the Small Magellanic Cloud: fundamental parameters and Cloud distance [PDF]

, 2003
We present the first results of an observational programme to measure the fundamental parameters of over 100 eclipsing binaries in the Small Magellanic Cloud (SMC).
Hilditch, R.W., Harries, T.J., Howarth, I.D.   +2 more
core  

Analysis of Six Long-period Low-mass Eclipsing Binaries

The Astronomical Journal
The radius inflation is predominantly observed in short-period, low-mass stellar systems, while being rarely detected in long-period binaries. Using Transiting Exoplanet Survey Satellite photometric and Large Sky Area Multi-Object Fiber Spectroscopic ...
Yang Pan, Antonio Frasca, Jiaxin Wang, Jianning Fu, Xiaobin Zhang   +4 more
doaj   +1 more source

Binary stars in the RAVE survey

EPJ Web of Conferences, 2012
We searched the sample of RAVE survey spectra for both types of spectroscopic binary stars in order to estimate their number in the sample and perform a study on newly discovered binaries.
Zwitter T., Matijevič G., Munari U.
doaj   +1 more source

Wide double stars - I. The spectroscopic binaries: Double stars with wide separations in the AGK3 - I. The components that are themselves spectroscopic binaries

, 2011
11 pages, 2 figures; to be published in MNRAS; RV measurements and orbits will be distributed in the on-line SB9 catalogue. Revision 1: the on-line only material was added to the printed version; 1 ascii data file and 67 figures in eps ...
Halbwachs, Jean-Louis, Mayor, Michel, Udry, Stéphane   +2 more
openaire   +2 more sources