Results 31 to 40 of about 524,810 (295)

Binary interactions as a possible scenario for the formation of multiple stellar populations in globular clusters

open access: yes, 2014
Observations revealed the presence of multiple stellar populations in globular clusters (GCs) that exhibit wide abundance variations and multiple sequences in Hertzsprung-Russell (HR) diagram.
Han, Zhanwen, Jiang, Dengkai, Li, Lifang
core   +1 more source

Globular cluster chemistry in fast rotating dwarf stars belonging to intermediate age open clusters [PDF]

open access: yes, 2018
(shortened) The peculiar chemistry observed in the multiple populations of Galactic globular clusters is not generally found in other systems like dwarf galaxies and open clusters, and at the moment no model can fully explain its presence.
Pancino, E.
core   +2 more sources

A New Catalog of Am-type Chemically Peculiar Stars Based on LAMOST

open access: yesThe Astrophysical Journal Supplement Series, 2023
A total of about 21,600 Am candidates were detected with the MKCLASS code based on the low-resolution spectra of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope Data Releases 8 (v1.0), 9 (v0), and 10 (v0), which greatly expands the database
Xiao-man Tian   +3 more
doaj   +1 more source

Observations of Binary Stars with the Differential Speckle Survey Instrument. V. Toward an Empirical Metal-Poor Mass-Luminosity Relation [PDF]

open access: yes, 2015
In an effort to better understand the details of the stellar structure and evolution of metal poor stars, the Gemini North telescope was used on two occasions to take speckle imaging data of a sample of known spectroscopic binary stars and other nearby ...
Ciardi, David R.   +8 more
core   +3 more sources

The Great Escape II: Exoplanet Ejection from Dying Multiple Star Systems

open access: yes, 2012
Extrasolar planets and belts of debris orbiting post-main-sequence single stars may become unbound as the evolving star loses mass. In multiple star systems, the presence or co-evolution of the additional stars can significantly complicate the prospects ...
Tout, Christopher A., Veras, Dimitri
core   +1 more source

Massive stars in the giant molecular cloud G23.3−0.3 and W41 [PDF]

open access: yes, 2014
Context. Young massive stars and stellar clusters continuously form in the Galactic disk, generating new Hii regions within their natal giant molecular clouds and subsequently enriching the interstellar medium via their winds and supernovae.Aims. Massive
Aharonian   +121 more
core   +2 more sources

A Survey of Herbig Ae/Be Multiplicity

open access: yesThe Astronomical Journal, 2023
Although the majority of Herbig Ae/Be (HAEBE) stars are likely multiple systems, relatively few multiples have been identified. We aim to create a statistically significant survey of HAEBE multiplicity as a function of stellar mass, to shed light on ...
S. J. Thomas   +7 more
doaj   +1 more source

Hot Magnetic Stars in Exotic Multiple Systems [PDF]

open access: yesEPJ Web of Conferences, 2020
A strong and stable magnetic field covering the whole surface is a landmark of chemically peculiar or CP stars. To explain the origin of mag- netic stars, several hypotheses were proposed, which depending on the mech- anism and time of formation can be ...
Semenko Eugene
doaj   +1 more source

Pr��fer $\star$--multiplication domains and $\star$--coherence

open access: yes, 2006
The purpose of this paper is to deepen the study of the Pr fer $\star$--multiplication domains, where $\star$ is a semistar operation. For this reason, in Section 2, we introduce the $\star$--domains, as a natural extension of the $v$--domains, where $v$ is the classical Artin's divisorial operation.
Fontana, Marco, Picozza, Giampaolo
openaire   +2 more sources

Roadmap on the theoretical work of BinaMIcS [PDF]

open access: yes, 2013
We review the different theoretical challenges concerning magnetism in interacting binary or multiple stars that will be studied in the BinaMIcS (Binarity and Magnetic Interactions in various classes of Stars) project during the corresponding ...
Alecian, E.   +4 more
core   +1 more source

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