Results 21 to 30 of about 508,501 (339)

Atmospheric and Fundamental Parameters of the Individual Components of Multiple Stellar Systems

open access: yesThe Astronomical Journal, 2023
We present detailed analyses of eight triple stellar systems (lying between 20 and 155 pc) and nine quadruple stellar systems (lying between 20 and 250 pc) with different configurations. Most of these systems are hierarchical.
Enas M. Abu-Alrob   +2 more
doaj   +1 more source

The multiplicity of massive stars in the Orion Nebula cluster as seen with long-baseline interferometry [PDF]

open access: yes, 2013
The characterization of multiple stellar systems is an important ingredient for testing current star formation models. Stars are more often found in multiple systems, the more massive they are.
Grellmann, Rebekka   +5 more
core   +1 more source

Multiplicity of Chemically Peculiar Stars [PDF]

open access: yes, 2007
7 pages, 4 figures, to appear in the Proceedings of the ESO Workshop "Multiple Stars across the H-R Diagram"
Markus Schöller   +2 more
openaire   +3 more sources

Chemical characterization of the globular cluster NGC 5634 associated to the Sagittarius dwarf spheroidal galaxy [PDF]

open access: yes, 2017
As part of our on-going project on the homogeneous chemical characterization of multiple stellar populations in globular clusters (GCs), we studied NGC 5634, associated to the Sagittarius dwarf spheroidal galaxy, using high-resolution spectroscopy of red
Bragaglia, Angela   +7 more
core   +2 more sources

CCD measurements of double and multiple stars at NAO Rozhen: II [PDF]

open access: yesSerbian Astronomical Journal, 2006
Using the 2-m telescope of the Bulgarian National Astronomical Observatory at Rozhen observations of twenty multiple stars were carried out during one whole night - October 30/31, and, also, during the first half of the next one - October 31. 2005.
Cvetković Z.   +3 more
doaj   +1 more source

Dust Around T Tauri Stars [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2011
To reproduce the multiple broad peaks and the fine spectral features in the spectral energy distributions (SEDs) of T Tauri stars, we model dust around T Tauri stars using a radiative transfer model for multiple isothermal circumstellar dust shells. We
Kyung-Won Suh, Young-Joo Kwon
doaj   +1 more source

Multiple Stellar Populations in Metal-poor Globular Clusters with JWST: A NIRCam View of M92

open access: yesThe Astrophysical Journal, 2023
Recent work on metal-intermediate globular clusters (GCs) with [Fe/H] = −1.5 and −0.75 has illustrated the theoretical behavior of multiple populations in photometric diagrams obtained with the JWST.
Tuila Ziliotto   +12 more
doaj   +1 more source

Speckle Observations and Orbits of Multiple Stars [PDF]

open access: bronzeThe Astronomical Journal, 2019
Abstract We report results of speckle-interferometric monitoring of visual hierarchical systems using the newly commissioned instrument NN-EXPLORE Exoplanet and Stellar Speckle Imager at the 3.5 m WIYN telescope. During one year, 390 measurements of 129 resolved subsystems were made, while some targets were unresolved.
Andreï Tokovinin   +4 more
openalex   +5 more sources

Multiplicity in 5 M stars [PDF]

open access: yesProceedings of the International Astronomical Union, 2010
AbstractBinary/multiple status can affect stars at all stages of their lifetimes: evolution onto the main sequence, properties on the main sequence, and subsequent evolution. 5 M⊙ stars have provided a wealth of information about the binary properties fairly massive stars.
openaire   +5 more sources

Double and Multiple Stars [PDF]

open access: yesScientific American, 1892
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openaire   +1 more source

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