Results 51 to 60 of about 45,240 (301)

Astronomical Cardiology: A Search For Heartbeat Stars Using $\textit{Gaia}$ and $\textit{TESS}$

The Open Journal of Astrophysics
Heartbeat stars are a subclass of binary stars with short periods, high eccentricities, and phase-folded light curves that resemble an electrocardiogram.
Jowen Callahan, D. M. Rowan, C. S. Kochanek, K. Z. Stanek   +3 more
doaj   +1 more source

Formation of massive binaries [PDF]

, 2003
The formation of massive stars is one of the major unsolved problems in stellar astrophysics. However, only few if any of these are found as single stars, on average massive stars have more than one companion.
Zinnecker, Hans
core   +2 more sources

Encapsulating Zinc Powder in MXene/Silk Scaffolds with Zincophilic‐Hydrophobic Polymer for Flexible Zinc‐Ion Batteries

Advanced Functional Materials, EarlyView.
This work develops flexible zinc‐ion batteries (FZIBs) using a zincophilic/hydrophobic polymer (thermoplastic polycarbonate‐based polyurethane, TPCU) to protect Zn powder anodes and MXene/Silk (MXS) as flexible current collectors. The designed TPCU‐ZnP@MXS structure enables uniform Zn deposition, yielding dendrite‐free anodes with stable cycling ...
Zixuan Yang, Zhiyu Wang, Junlun Cao, Han Wang, Weiwei Lei, Jingliang Li, Joselito M. Razal, Xungai Wang, Dan Liu   +8 more
wiley   +1 more source

Precise Physical Parameters, Habitability, and Orbital Stability of Sun-like SB2 Systems: HD 130669, HD 184467, HD 191854, and HD 214222

The Astronomical Journal
This work analyzes four Sun-like double-lined spectroscopic binary systems by combining visual and spectroscopic observational data with Al-Wardat’s atmospheric modeling method to accurately determine their fundamental parameters.
Ahmad Abushattal, Nikolaos Georgakarakos, Mashhoor A. Al-Wardat, Bilal Algnamat, Hassan B. Haboubi, Deshinta Arrova Dewi, Enas M. Abu-Alrob, Abdallah M. Hussein   +7 more
doaj   +1 more source

Lithium abundances in CEMP stars

, 2012
Carbon-enhanced metal-poor (CEMP) stars are believed to show the chemical imprints of more massive stars (M > 0.8 Msun) that are now extinct. In particular, it is expected that the observed abundance of Li should deviate in these stars from the standard ...
Abia, Alvarez, Amanda Karakas, Aoki, Aoki, Aoki, Aoki, Aoki, Aoki, Aoki, Asplund, Asplund, Bertrand Plez, Christlieb, Cohen, Cristallo, Denissenkov, Denissenkov, Eggleton, Frebel, Goriely, Herwig, Hobbs, Iwamoto, Jennifer A. Johnson, Johnson, Johnson, Karakas, Lawler, Lucatello, Lucatello, Lucatello, Lucatello, Lucatello, Masseron, Nollett, Norbert Christlieb, Norris, Norris, Norris, Norris, Palmerini, Preston, Richard, Roederer, Ryan, Ryan, Sara Lucatello, Siess, Sneden, Spite, Spite, Steffen, Suda, Suda, Thomas Masseron, Thompson, Thorburn, Timothy C. Beers, Tsangarides, VandenBerg   +60 more
core   +3 more sources

Observations of Binary Stars with the Differential Speckle Survey Instrument. V. Toward an Empirical Metal-Poor Mass-Luminosity Relation [PDF]

, 2015
In an effort to better understand the details of the stellar structure and evolution of metal poor stars, the Gemini North telescope was used on two occasions to take speckle imaging data of a sample of known spectroscopic binary stars and other nearby ...
Ciardi, David R., Demarque, Pierre, Everett, Mark E., Henry, Todd J., Horch, Elliott P., Howell, Steve B., Teske, Johanna K., van Altena, William F., Winters, Jennifer G.   +8 more
core   +3 more sources

An Ultra‐Robust Memristor Based on Vertically Aligned Nanocomposite with Highly Defective Vertical Channels for Neuromorphic Computing

Advanced Functional Materials, EarlyView.
An ultra‐robust memristor based on SrTiO3‐CeO2 (S‐C) vertically aligned nanocomposite (VAN) achieving exceptional endurance of 1012 switching cycles via interface engineering. Artificial neural networks (ANNs) integrated with S‐C VAN memristors exhibit high training accuracy across multiple datasets.
Zedong Hu, Hongyi Dou, Jeremy B. Gan, Cun Li, Xuanyu Sheng, Juanjuan Lu, Abhijeet Choudhury, Jialong Huang, Yizhi Zhang, Zhongxia Shang, Ye Cao, Xinghang Zhang, Haiyan Wang   +12 more
wiley   +1 more source

paired: A Statistical Framework for Detecting Stellar Binarity with Gaia RVs. I. Sensitivity to Unresolved Binaries

The Astrophysical Journal
Data Release 3 (DR3) from the Gaia Mission includes radial velocity measurements of over 33 million targets. Among many scientific applications, the overlap of this stellar sample with targeted exoplanet transit survey stars presents an opportunity to ...
Quadry Chance, Daniel Foreman-Mackey, Sarah Ballard, Andrew R. Casey, Trevor J. David, Adrian M. Price-Whelan   +5 more
doaj   +1 more source

Low Mass Ratio Contact Binary V410 Aur and V776 Cas - II [PDF]

Journal of Astronomy and Space Sciences, 2005
New BVR CCD light curves of the low mass ratio contact binaries, V410 Aur and V776 Cas, were observed with the 61 cm reflector and a 2K CCD camera at the Sobaeksan Astronomical Observatory.
Kyu-Dong Oh, Chun-Hwey Kim, Ho-iL Kim
doaj   +1 more source

Physical parameters of 62 eclipsing binary stars using the ASAS-3 data$-$I

, 2010
We present a detailed light curve analysis of publicly available V band observations of 62 binary stars, mostly contact binaries, obtained by the All Sky Automated Survey (ASAS)-3 project between 2000 and 2009.
Deb, Sukanta, Singh, Harinder P.
core   +1 more source