Results 11 to 20 of about 5,074,994 (301)
Modelling and observations of molecules in discs around young stars [PDF]
This thesis contains a study of molecules within circumstellar discs around young stars. Firstly, the chemistry of a disc around a young, Class 0 protostar is modelled.
Ilee, John David
core +6 more sources
Multiplicity of Massive Stars [PDF]
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.
Preibisch, Thomas +2 more
openaire +2 more sources
Multiple Populations in Star Clusters
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
openaire +4 more sources
ULTRACOMPACT STARS WITH MULTIPLE NECKS [PDF]
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 ...
Karlovini, Max +2 more
openaire +3 more sources
The multiplicity of massive stars [PDF]
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.
openaire +4 more sources
Multiple populations among very low-mass stars in NGC288 [PDF]
openGlobular Clusters (GCs) are among the oldest objects in the Universe. Nearly all GCs host two main stellar groups of stars, a first population (1P) with a chemical composition similar to halo field stars with similar metallicity, and the second ...
BORTOLAN, EMANUELE
core
Multiplicity of Chemically Peculiar Stars [PDF]
7 pages, 4 figures, to appear in the Proceedings of the ESO Workshop "Multiple Stars across the H-R Diagram"
Hubrig, S., Ageorges, N., Schoeller, M.
openaire +2 more sources
Gravitoastronomy with neutron stars [PDF]
Recent advances in gravitational wave detectors mean that we can start to make astrophysically important statements about the physics of neutron stars based on observed upper limits to their gravitational luminosity.
Woan, G., Graham Woan
core +1 more source
Probing the composition of sub-millisecond rotating compact stars by r-modes instability [PDF]
We investigate the implications of the r-modes instability on the composition of a compact star rotating at a sub-millisecond period. In particular, the only viable astrophysical scenario for such an object, wich might present inside the Low Mass X-ray ...
Giuseppe Pagliara +3 more
core +1 more source
Dynamical investigations of the multiple stars
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 +1 more source

