Results 11 to 20 of about 508,501 (339)
Multiple views of magnetism in cool stars [PDF]
Astronomische Nachrichten, 2012 AbstractMagnetic fields are regarded as a crucial element for our understanding of stellar physics. They can be studied with a variety of methods which provide complementary – and sometimes contradictory – information about the structure, strength and dynamics of the magnetic field and its role in the evolution of stars.
J. Morin +11 more
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Dynamical investigations of the multiple stars
Open Astronomy, 2017 Two multiple stars - the quadruple star - Bootis (ADS 9173) and the triple star T Taury were investigated. The visual double star - Bootiswas studied on the basis of the Pulkovo 26-inch refractor observations 1982-2013.
Kiyaeva Olga V., Zhuchkov Roman Ya.
doaj +4 more sources
Statistics Of Multiple Stars [PDF]
International Astronomical Union Colloquium, 2004 AbstractThe statistics of stellar systems of multiplicity three and higher is reviewed. They are frequent, 0.15−0.25 of all stellar systems. Some 700 multiples are expected among the 3383 stars of spectral type F, G, and K within 50 pc, while only 76 of them are actually known.
Andreï Tokovinin
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On the properties of young multiple stars [PDF]
Monthly Notices of the Royal Astronomical Society, 2004 Abridged/ We present numerical results on the properties of young binary and multiple stellar systems. Our analysis is based on a series of SPH + Nbody simulations of the fragmentation of small molecular clouds, that fully resolve the opacity limit for fragmentation.
Eduardo Delgado-Donate +3 more
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Multiple Populations in Star Clusters
Universe, 2022 We review the multiple population (MP) phenomenon of globular clusters (GCs): i.e., the evidence that GCs typically host groups of stars with different elemental abundances and/or distinct sequences in photometric diagrams. Most Galactic and extragalactic clusters exhibit internal variations of He, C, N, O, Na, and Al.
Milone, Antonino P, Marino, AF
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The multiplicity of massive stars [PDF]
Proceedings of the International Astronomical Union, 2010 AbstractBinaries are excellent astrophysical laboratories that provide us with direct measurements of fundamental stellar parameters. Compared to single isolated stars, multiplicity induces new processes, offering the opportunity to confront our understanding of a broad range of physics under the extreme conditions found in, and close to, astrophysical
Sana, H.A.A., Evans, C.
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Multiplicity of Massive Stars [PDF]
Symposium - International Astronomical Union, 2001 We discuss the observed multiplicity of massive stars and implications on theories of massive star formation. After a short summary of the literature on massive star multiplicity, we focus on the O-and B-type stars in the Orion Nebula Cluster, which constitute a homogenous sample of very young massive stars.
Hans Zinnecker +2 more
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ULTRACOMPACT STARS WITH MULTIPLE NECKS [PDF]
Modern Physics Letters A, 2002 We discuss ultracompact stellar objects which have multiple necks in their optical geometry. There are in fact physically reasonable equations of state for which the number of necks can be arbitrarily large. The proofs of these statements rely on a recent regularized formulation of the field equations for static spherically symmetric models due to ...
Max Karlovini +2 more
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On multiplicity correlations in the STAR data [PDF]
Open Physics, 2012 Abstract The STAR data on the multiplicity correlations between narrow pseudorapidity bins in the pp and AuAu collisions are discussed. The PYTHIA 8.145 generator is used for the pp data, and a naïve superposition model is presented for the AuAu data.
K. Fialkowski, Romuald Wit
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Magnetic cycles at different ages of stars [PDF]
, 2016 We study the different patterns of interannual magnetic variability in stars on or near the lower main sequence, approximately solar-type (G-K dwarf) stars in time series of 36 years from the Mount Wilson Observatory Ca\,{\sc ii}\,H\&K survey.
Baliunas, S. +6 more
core +2 more sources