Results 21 to 30 of about 127,440 (200)
Two Wide Planetary-Mass Companions to Solar-Type Stars in Upper Scorpius [PDF]
, 2010 At wide separations, planetary-mass and brown dwarf companions to solar type stars occupy a curious region of parameters space not obviously linked to binary star formation or solar-system scale planet formation. These companions provide insight into the
A. Kraus +50 more
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Mass Ratios in Wide Binary Stars
The Astrophysical Journal, 1997 The mass ratio distribution N(q) in wide binary stars has been found by Abt to depend on the spectral type of the primary. The stars with an O-type primary are rather equal in mass in comparison with binaries that have solar-type primaries. We investigate whether this results from the theory of stellar dynamics if the binary stars are remnants of three-
openaire +1 more source
Eclipsing Binary Stars from Space [PDF]
, 2006 We have begun a programme to obtain high-precision photometry of bright detached eclipsing binary (dEB) stars with the Wide field InfraRed Explorer (WIRE) satellite. Due to the small aperture of WIRE only stars brighter than V=6 can be observed.
Andersen +7 more
core +3 more sources
The origin of very wide binary stars
, 2011 A large population of fragile, wide (> 1000 AU) binary systems exists in the Galactic field and halo. These wide binary stars cannot be primordial because of the high stellar density in star forming regions, while formation by capture in the Galactic field is highly improbable.
Kouwenhoven, M. B. N. +5 more
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Massive, wide binaries as tracers of massive star formation [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 8 pages, 6 figures, accepted for publication in ...
Daniel W Griffiths +2 more
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Flare Activity of Wide Binary Stars with Kepler
The Astrophysical Journal, 2018 Abstract We present an analysis of flare activity in wide binary stars using a combination of value-added data sets from the NASA Kepler mission. The target list contains a set of previously discovered wide binary star systems identified by proper motions in the Kepler field.
Riley W. Clarke +3 more
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Searching for Wide Binary Brown Dwarfs around Nearby Stars [PDF]
Symposium - International Astronomical Union, 2003 We have started a program to search for Brown Dwarf (BD) companions to nearby stars (5 ≤ d ≤ 10 pc) on long period orbits (up to 2000 AU) using wide field optical/infrared imaging. Our goals in surveying a volume-limited sample of stars are: 1) to determine the binary fraction of widely separated BDs and help constrain the BD formation processes, 2) to
Loïc Albert, René Doyon, Daniel Nadeau
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The stellar correlation function from SDSS - A statistical search for wide binary stars [PDF]
, 2010 We study the statistical properties of the wide binary population in the Galaxy field with projected separations larger than 200 AU by constructing the stellar angular two-point correlation function (2PCF) from a homogeneous sample of nearly 670'000 main
Binggeli, B., Longhitano, M.
core +2 more sources
pH‐mediated activation of the lysosomal arginine sensor SLC38A9
FEBS Letters, EarlyView.Cells monitor nutrient levels via the lysosomal transporter SLC38A9 to activate the mechanistic target of rapamycin complex 1 (mTORC1). This study reveals that SLC38A9 function is regulated by pH. We identified histidine 544 as a critical pH sensor that undergoes conformational changes to control amino acid efflux from lysosomes; therefore, it ...
Xuelang Mu, Ampon Sae Her, Tamir Gonen
wiley +1 more source
The role of binarity in Wolf-Rayet central stars of planetary nebulae
, 2015 Over a hundred planetary nebulae (PNe) are known to have H-deficient central stars that mimic the spectroscopic appearance of massive Wolf-Rayet stars. The formation of these low-mass Wolf-Rayet stars, denoted [WR] stars, remains poorly understood. While
Manick, Rajeev +2 more
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