Results 61 to 70 of about 997,063 (252)

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

SDSS J0926+3624 : the shortest period eclipsing binary star [PDF]

, 2010
With orbital periods of the order of tens of minutes or less, the AM Canum Venaticorum stars are ultracompact, hydrogen-deficient binaries with the shortest periods of any binary subclass, and are expected to be among the strongest gravitational wave ...
Roelofs, Gijs H. A., Southworth, J., Littlefair, S., Copperwheat, C.M., Tulloch, S., Steeghs, D., G. Ramsay, P. J. Groot, Gaensicke, B. T., Koester, D., G. Nelemans, Dhillon, V. S., Hakala, P., Roelofs, G., A. J. Drake, Drake, A. J., Marsh, T., T. R. Marsh, Dhillon, V.S., Littlefair, S. P., Marsh, T. R., Groot, P.J., Copperwheat, C., P. Hakala, Koester, Detlev, Gänsicke, B. T., Dhillon, V., G. Roelofs, V. S. Dhillon, Copperwheat, C. M., Ramsay, G., J. Southworth, Littlefair, S.P., D. Koester, D. Steeghs, C. M. Copperwheat, Nelemans, G., Gänsicke, B.T., S. Tulloch, Marsh, T.R., Drake, A.J., Nelemans, G.A., Groot, P. J., B. T. Gänsicke, S. P. Littlefair   +44 more
core   +2 more sources

Free Charge Generation in Organic Photoconversion Devices–the Impact of Electrostatic Potentials

Advanced Energy Materials, EarlyView.
Free charge generation in organic photovoltaic and photodetector devices typically requires an external driving force to separate bound excitons formed upon photoexcitation. This review details how electrostatic potentials, arising from molecular charge distributions in organic semiconductors, can impact interfacial energetic landscapes and promote ...
Emily J. Yang, Song Yi Park, Vick Y. Qiu, Ji‐Seon Kim   +3 more
wiley   +1 more source

KM UMa: An Active Short-period Detached Eclipsing Binary in a Hierarchical Quadruple System

The Astrophysical Journal
The first detailed photometric and spectroscopic analysis of the G-type eclipsing binary KM UMa is presented, which indicates that the system is a short-period detached eclipsing binary.
Fangbin Meng, Liying Zhu, Nianping Liu, Ping Li, Jia Zhang, Linjia Li, Azizbek Matekov   +6 more
doaj   +1 more source

Gravitational lensing in eclipsing binary stars [PDF]

Monthly Notices of the Royal Astronomical Society, 2001
6 pages, 6 figures, accepted for publication in ...
openaire   +2 more sources

Four-colour photometry of eclipsing binaries. XL, uvby light curves for the B-type systems DW Carinae, BF Centauri, AC Velorum, and NSV 5783 [PDF]

, 2006
Aims. In order to increase the limited number of B-stars with accurately known dimensions, and also the number of well studied eclipsing binaries in open clusters, we have undertaken observations and studies of four southern double-lined eclipsing B-type
E. H. Olsen, J. M. García, L. P. R. Vaz, J. V. Clausen, Vaz, L. P. R., García, J. M., J. Southworth, Olsen, E. H., Helt, B. E., Gimenez, A., Southworth, J. (John), Clausen, Jens Viggo, A. Giménez, Giménez, Alvaro, B. E. Helt, Clausen, J. V.   +15 more
core   +1 more source

Dielectric Elastomer Actuators as Safe and Effective Tools for Mechanostimulation of Human Cells

Advanced Intelligent Systems, EarlyView.
Replicating physiological forces is crucial for realistic cell models. Dielectric elastomer actuators (DEAs) offer a soft alternative, though their high voltages raised toxicity concerns. We demonstrate that DEA stimulation causes no cell damage, cell death or cell‐cycle disruption, while activating mechanosensitive responses.
Simon Holzer, Chaimae Bahou, Noe Syfrig, Katia Monastyrskaya, Yoan Civet, Ali Hashemi Gheinani, Yves Perriard   +6 more
wiley   +1 more source

Fundamental Parameters for Totally Eclipsing Contact Binaries Observed by TESS

The Astrophysical Journal
Totally eclipsing contact binaries provide a unique opportunity to accurately determine mass ratios through photometric methods alone, eliminating the need for spectroscopic data.
Xu Ding, KaiFan Ji, ZhiMing Song, XueFen Tian, JinLiang Wang, ChuanJun Wang, QiYuan Cheng, JianPing Xiong   +7 more
doaj   +1 more source

Phemenological Modeling of Eclipsing Binary Stars

, 2016
We review the method NAV (New Algol Variable) first introduced in 2012Ap.....55..536A, which uses the locally-dependent shapes of eclipses in an addition to the trigonometric polynomial of the second order (which typically describes the "out-of-eclipse" part of the light curve with effects of reflection, ellipticity and O'Connell).
Andronov, Ivan L., Tkachenko, Mariia G., Chinarova, Lidia L.   +2 more
openaire   +2 more sources

A Reflection Model for Eclipsing Binary Stars [PDF]

Monthly Notices of the Royal Astronomical Society, 1973
A highly accurate reflection model has been developed which emphasizes efficiency of computer calculation. It is assumed that the heating of the irradiated star must depend upon the following properties of the irradiating star: (1) effective temperature; (2) apparent area as seen from a point on the surface of the irradiated star; (3) limb darkening ...
openaire   +1 more source