Results 71 to 80 of about 16,757 (258)

Optical Observations with Milliarcsecond Resolution of Stars, Their Environments and Companions [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2012
Observations with milliarsecond resolution using the Navy Optical Interferometer have been obtained for a number of stellar systems which include high-mass binaries, eclipsing binaries, and radio stars.
Jason J. Sanborn, Robert T. Zavala
doaj   +1 more source

The massive multiple system HD 64315 [PDF]

open access: yes, 2017
The O6 Vn star HD 64315 is believed to belong to the star-forming region known as NGC 2467, but previous distance estimates do not support this association.
Evans, C. J.   +6 more
core   +5 more sources

Eclipsing AM Herculis Binaries [PDF]

open access: yesInternational Astronomical Union Colloquium, 1997
AbstractAM Herculis Binaries (or Polars) are a subclass of the Cataclysmic Variables in which the accreting white dwarf has a strong magnetic field giving rise to highly polarized cyclotron radiation from the shock heated accretion region. A number of AM Herculis binaries are now known in which the white dwarf is eclipsed by the companion star.
openaire   +1 more source

Scale‐up of Streptomyces species cultivations based on the morphological response to the energy dissipation rate

open access: yesAIChE Journal, EarlyView.
Abstract Filamentous microorganisms exhibit complex morphologies that influence product formation and are affected by various bioprocess parameters. Consistent morphology is therefore essential for comparable results during scale‐up. This study investigates the scale‐up of Streptomyces species (Streptomyces spp.) cultivations from shake flasks to ...
Gesa Brauneck   +12 more
wiley   +1 more source

The TESS Ten Thousand Catalog: 10,001 Uniformly Vetted and Validated Eclipsing Binary Stars Detected in Full-frame Image Data by Machine Learning and Analyzed by Citizen Scientists

open access: yesThe Astrophysical Journal Supplement Series
The Transiting Exoplanet Survey Satellite (TESS) has surveyed nearly the entire sky in full-frame image mode with a time resolution of 200 s to 30 minutes and a temporal baseline of at least 27 days.
Veselin B. Kostov   +38 more
doaj   +1 more source

ECLIPSING BINARY STARS : LIGHT CURVE MODELS AND SOFTWARE

open access: yesOdessa Astronomical Publications, 2017
The importance of studying Eclipsing Binary Stars for the determination of fundamental stellar data is sketched. The eclipsing binaries, originally classified phenomenologically, are now understood on the basis of much firmer physics and the improved ...
P. G. Niarchos
doaj   +1 more source

The extraneous eclipses on binary light curves: KIC 5255552, KIC 10091110, and KIC 11495766

open access: yes, 2017
Aims. We aim to find more eclipsing multiple systems and obtain their parameters, thus increasing our understanding of multiple systems. Methods. The extraneous eclipses on the \textit{kepler} binary light curves indicating extraneous bodies were ...
Jiang, L. Q.   +5 more
core   +1 more source

‘Where are the adults?’: Troubling child‐activism and children's political participation

open access: yesBritish Educational Research Journal, EarlyView.
Abstract Children's political participation is a well‐established theme in childhood studies. In this article we offer an original account of child activism that takes into account the entangled and emergent aspect of children as activists. We begin with a historical and a conceptual review, noting the importance of mid‐20th century developments such ...
Sharon Hunter, Claire Cassidy
wiley   +1 more source

THE ECLIPSING BINARY SYSTEM BM ORI

open access: yesOdessa Astronomical Publications, 2017
Photometric and spectroscopic features of eclipsing binary system BM Ori can be described well by a model in which the components are the primary star B3 ZAMS, the secondary F2 pre-main sequence star and a dusty envelope of large grains around the ...
N. I. Bondar', E. A Vitrichenko
doaj   +1 more source

KEPLERECLIPSING BINARY STARS. II. 2165 ECLIPSING BINARIES IN THE SECOND DATA RELEASE [PDF]

open access: yesThe Astronomical Journal, 2011
The Kepler Mission provides nearly continuous monitoring of ~156 000 objects with unprecedented photometric precision. Coincident with the first data release, we presented a catalog of 1879 eclipsing binary systems identified within the 115 square degree Kepler FOV. Here, we provide an updated catalog augmented with the second Kepler data release which
Slawson, Robert W.   +23 more
openaire   +2 more sources

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