Results 81 to 90 of about 56,963 (291)

Reconfigurable Liquid Crystal‐Based Physical Unclonable Function Integrating Optical and Electrical Responses

Advanced Materials, EarlyView.
Reconfigurable physical unclonable function (PUF) integrating optical and electrical responses in organic field‐effect transistor is developed by using unique optical fingerprint textures and random molecular alignment of the semiconductive smectic liquid crystal. This approach enhances security by enabling hierarchical authentication, providing robust
Hee Seong Yun, Dayan Wei, Sungjun Yang, Geonhyeong Park, Min Seok Kim, Tae Joo Shin, David M. Walba, Moon Jong Han, Dong Ki Yoon   +8 more
wiley   +1 more source

The XO Planetary Survey Project - Astrophysical False Positives

, 2010
Searches for planetary transits find many astrophysical false positives as a by-product. There are four main types analyzed in the literature: a grazing-incidence eclipsing binary star, an eclipsing binary star with a small radius companion star, a blend
Beatty, Brown, Burke, Burke, Burke, Charbonneau, Christopher J. Burke, Creevey, Dommanget, Drilling, Garcia-Melendo, Hoyer, Jeff A. Valenti, Johns-Krull, Kenneth Janes, Kurucz, McCullough, McCullough, Minniti, Nidever, O’Donovan, Pavel Machalek, Peter R. McCullough, Radosaw Poleski, Skrutskie   +24 more
core   +1 more source

Quantitative spectroscopy of close binary stars [PDF]

, 2011
The method of spectral disentangling has now created the opportunity for studying the chemical composition in previously inaccessible components of binary and multiple stars.
Brogaard, Clausen, Clausen, Cugier, De Mink, Grundahl, Hadrava, Hadrava, Hadrava, Hareter, Hensberge, Hensberge, Hensberge, J. Southworth, K. Pavlovski, Linder, Lyubimkov, Mahy, Meynet, Mkrtichian, North, Pavlovski, Pavlovski, Pavlovski, Pavlovski, Sarna, Simon, Southworth, Southworth, Tamajo, Tkachenko, Tomkin, Torres, Torres, Wheelwright, Yakut   +35 more
core   +1 more source

ABSOLUTE PROPERTIES OF THE ECLIPSING BINARY STAR V501 HERCULIS [PDF]

The Astronomical Journal, 2014
V501 Her is a well detached G3 eclipsing binary star with a period of 8.597687 days for which we have determined very accurate light and radial-velocity curves by using robotic telescopes. Results of these data indicate that the component stars have masses of 1.269 +/- 0.004 and 1.211 +/- 0.003 solar masses, radii of 2.001 +/- 0.003 and 1.511 +/- 0.003
Francis C. Fekel, Francis C. Fekel, Claud H. Sandberg Lacy   +2 more
openaire   +2 more sources

In Situ Simultaneous Growth of Layered SnSe2 and SnSe: a Linear Precursor Approach

Advanced Materials Interfaces, EarlyView.
This study demonstrates the simultaneous growth of SnSe₂ and SnSe via hot‐wall CVD using a simple yet innovative method based on a linear arrangement of tin iodide (SnI2) granules. This approach overcomes conventional synthesis challenges, enabling dual‐phase growth through controlled precursor gradients, substrate temperature, and growth duration ...
Manab Mandal, Prahalad K. Barman, Sagar Chowdhury, D. Manikandan, Nilanjan Basu, Pramoda K. Nayak, Kanikrishnan Sethupathi   +6 more
wiley   +1 more source

Modelling of W UMa-type variable stars

South African Journal of Science, 2009
W Ursae Majoris (W UMa)-type variable stars are over-contact eclipsing binary stars. To understand how these systems form and evolve requires observations spanning many years, followed by detailed models of as many of them as possible.
P. Skelton, D. Smits
doaj  

Highlights on eclipsing binary variables from Araucaria Project

EPJ Web of Conferences, 2015
The Araucaria Project, which main goal is to provide precise determination of the cosmic distance scale, has recently made a set of discoveries involving variable stars in binary systems. Among these discoveries we highlight three: 1% precise measurement
Karczmarek Paulina, Pietrzyński Grzegorz, Gieren Wolfgang, Pilecki Bogumił, Graczyk Dariusz, Thompson Ian, Górski Marek, Konorski Piotr, Suchomska Ksenia, Nardetto Nicholas, Smolec Radoslaw   +10 more
doaj   +1 more source

The ELM Survey South. II. Two Dozen New Low-mass White Dwarf Binaries

The Astrophysical Journal, 2023
We present the results from our ongoing spectroscopic survey targeting low-mass white dwarf binaries, focusing on the southern sky. We used a Gaia DR2- and eDR3-based selection and identified 28 new binaries, including 19 new extremely low-mass (ELM ...
Alekzander Kosakowski, Warren R. Brown, Mukremin Kilic, Thomas Kupfer, Antoine Bédard, A. Gianninas, Marcel A. Agüeros, Manuel Barrientos   +7 more
doaj   +1 more source

THE G+M ECLIPSING BINARY V530 ORIONIS: A STRINGENT TEST OF MAGNETIC STELLAR EVOLUTION MODELS FOR LOW-MASS STARS [PDF]

, 2014
We report extensive photometric and spectroscopic observations of the 6.1 day period, G+M-type detached double-lined eclipsing binary V530 Ori, an important new benchmark system for testing stellar evolution models for low-mass stars.
G. Torres, C. Lacy, K. Pavlovski, G. Feiden, J. A. Sabby, H. Bruntt, J. Clausen   +6 more
semanticscholar   +1 more source

ABSOLUTE PROPERTIES OF THE ECLIPSING BINARY STAR AP ANDROMEDAE [PDF]

The Astronomical Journal, 2014
AP And is a well-detached F5 eclipsing binary star for which only a very limited amount of information was available before this publication. We have obtained very extensive measurements of the light curve (19097 differential V magnitude observations) and a radial velocity curve (83 spectroscopic observations) which allow us to fit orbits and determine
Claud H. Sandberg Lacy, Guillermo Torres, Francis C. Fekel, Matthew W. Muterspaugh   +3 more
openaire   +4 more sources