Results 31 to 40 of about 83,821 (294)

Visual binaries among high-mass stars [PDF]

Astronomy & Astrophysics, 2001
Accepted for publication in A&A, LaTeX2e, 15 pages, 5 embedded ...
Duchene, G., Simon, T., Eisloffel, J., Bouvier, J.   +3 more
openaire   +2 more sources

Spectroscopic Orbits of Subsystems in Multiple Stars. XI

The Astronomical Journal
Adding to the large radial velocity survey of nearby solar-type stars (summary in Tokovinin, 2023a), spectroscopic orbits are determined for four hierarchical systems: HIP 49442 (inner and outer periods of 164.55 days and 34 yr, respectively), HIP 55691 (
Andrei Tokovinin
doaj   +1 more source

Binary star astrometry with milli and sub-milli arcsecond precision [PDF]

Serbian Astronomical Journal, 2014
The past several decades have seen accelerating progress in improving binary stars fundamental parameters determinations, as new observational techniques have produced visual orbits of many spectroscopic binaries with a milli arcsecond precision.
Jankov S., Cvetković Z., Pavlović R.
doaj   +1 more source

The primordial binary population II: Recovering the binary population for intermediate mass stars in Sco OB2

, 2007
We characterize the binary population in the young and nearby OB association Scorpius OB2 using available observations of visual, spectroscopic, and astrometric binaries with intermediate-mass primaries.
A. G. A. Brown, Alencar, Andersen, Bahcall, Balega, Barbier-Brossat, Basri, Bate, Bertiau, Blaauw, Blaauw, Bouy, Brown, Brown, Buscombe, Chabrier, Chanamé, Chen, Close, Correia, Cruzalebes, de Bruijne, de Geus, de Zeeuw, Duflot, Duquennoy, Eggleton, Evans, Fryer, Fryer, Girardi, Gualandris, Hanson, Hartkopf, Heacox, Heacox, Heggie, Hillebrandt, Hills, Hoogerwerf, Hut, Jilinski, Jordi, Kouwenhoven, Kouwenhoven, Kraicheva, Kraus, Kraus, Kroupa, Kroupa, Kroupa, Kroupa, Kurosawa, L. Kaper, Levato, Lindegren, Lindroos, M. B. N. Kouwenhoven, Malkov, Mamajek, Mason, Mason, Mathieu, Mathis, McAlister, Meibom, Meynet, Miura, Oblak, Palla, Perryman, Perryman, Plummer, Portegies Zwart, Portegies Zwart, Preibisch, Preibisch, Preibisch, Robin, S. F. Portegies Zwart, Shatsky, Slesnick, Slettebak, Sowell, Svechnikov, Söderhjelm, Thackeray, Tokovinin, Tokovinin, van Albada, van den Heuvel, Vereshchagin, Verschueren, Worley, Worley, Yungelson   +95 more
core   +1 more source

Transcriptional network analysis of PTEN‐protein‐deficient prostate tumors reveals robust stromal reprogramming and signs of senescent paracrine communication

Molecular Oncology, EarlyView.
Combining PTEN protein assessment and transcriptomic profiling of prostate tumors, we uncovered a network enriched in senescence and extracellular matrix (ECM) programs associated with PTEN loss and conserved in a mouse model. We show that PTEN‐deficient cells trigger paracrine remodeling of the surrounding stroma and this information could help ...
Ivana Rondon‐Lorefice, Jose I. Lopez, Aitziber Ugalde‐Olano, Maite Zufiaurre, Ianire Astobiza, Natalia Martin‐Martin, Laura Bozal‐Basterra, Saioa Garcia‐Longarte, Amaia Zabala‐Letona, Sofia Rey, Aida Santos‐Martin, Miguel Unda, Ana Loizaga‐Iriarte, Mariona Graupera, Paolo Nuciforo, Arkaitz Carracedo, Isabel Mendizabal   +16 more
wiley   +1 more source

Orbits of Twelve Multiple Stars

The Astronomical Journal
Inner and outer orbits in 12 hierarchical stellar systems are determined using high-resolution speckle imaging, radial velocities, or both. Masses and fluxes of the components are estimated. The Hipparcos numbers of the main stars are 7111, 12912, 17895,
Andrei Tokovinin
doaj   +1 more source

The New Version of the Binary Star Database (BDB)

Open Astronomy, 2012
The Binary star database contains data on about 100 000 stellar systems of multiplicity 2 to 22, taken from a large variety of published catalogues for all types of binary stars: visual, orbital, astrometric, interferometric, spectroscopic, photometric ...
Kaygorodov P., Debray B., Kolesnikov N., Kovaleva D., Malkov O.   +4 more
doaj   +1 more source

The Census of Exoplanets in Visual Binaries: Population Trends from a Volume-Limited Gaia DR2 and Literature Search

Frontiers in Astronomy and Space Sciences, 2021
We present results from an extensive search in the literature and Gaia DR2 for visual co-moving binary companions to stars hosting exoplanets and brown dwarfs within 200 pc.
Clémence Fontanive, Daniella Bardalez Gagliuffi   +1 more
doaj   +1 more source

LDAcoop: Integrating non‐linear population dynamics into the analysis of clonogenic growth in vitro

Molecular Oncology, EarlyView.
Limiting dilution assays (LDAs) quantify clonogenic growth by seeding serial dilutions of cells and scoring wells for colony formation. The fraction of negative wells is plotted against cells seeded and analyzed using the non‐linear modeling of LDAcoop.
Nikko Brix, Daniel Samaga, Katharina Gehr, Benedek Dankó, Mohamed Schumann, Guido Drexler, Ahmed Alnatsha, Georg Beyer, Ujjwal Mahajan, Martin Selmansberger, Julia Mayerle, Claus Belka, Horst Zitzelsberger, Kirsten Lauber   +13 more
wiley   +1 more source

Spectroscopy of close visual binary components of the stable shell star 1 Del

, 2016
Stable shell stars are ideal objects for studying basic physical principles of the formation of disks in Be stars. If these stars have a close unresolved visual companion, its contribution toward the modelling of the disk cannot be overlooked, as is ...
Doležalová, Barbora, Iliev, Lubomir, Kubát, Jiří, Kubátová, Brankica, Šlechta, Miroslav   +4 more
core   +1 more source