LAUSR

Binary fraction of O and B-type stars from LAMOST data

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1 Published in 2021 at "Research in Astronomy and Astrophysics"

DOI: 10.1088/1674-4527/21/11/272

Abstract: Binary stars play an important role in the evolution of stellar populations . The intrinsic binary fraction (f bin) of O and B-type (OB) stars in LAMOST DR5 was investigated in this work. We employed… read more here.

Keywords: fraction type; type stars; stars lamost; binary fraction ... See more keywords

Binary fraction indicators in resolved stellar populations and supernova-type ratios

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0 Published in 2020 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/staa2089

Abstract: The binary fraction of a stellar population can have pronounced effects on its properties, and in particular the number counts of different massive star types, and the relative subtype rates of the supernovae which end… read more here.

Keywords: stellar populations; mass; resolved stellar; binary fraction ... See more keywords

The close binary fraction as a function of stellar parameters in APOGEE: a strong anticorrelation with α abundances

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1 Published in 2020 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/staa2859

Abstract: We use observations from the APOGEE survey to explore the relationship between stellar parameters and multiplicity. We combine high-resolution repeat spectroscopy for 41,363 dwarf and subgiant stars with abundance measurements from the APOGEE pipeline and… read more here.

Keywords: multiplicity; binary fraction; fraction function; stellar parameters ... See more keywords

Lifetime of short-period binaries measured from their Galactic kinematics

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0 Published in 2020 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/staa400

Abstract: As a significant fraction of stars are in multiple systems, binaries play a crucial role in stellar evolution. Among short-period ( read more here.

Keywords: period binaries; short period; kinematics; binary fraction ... See more keywords

Multiplicity among the cool supergiants in the Magellanic Clouds

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1 Published in 2021 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/stab303

Abstract: The characterization of multiplicity of high-mass stars is of fundamental importance to understand their evolution, the diversity of observed core-collapse supernovae and the formation of gravitational wave progenitor systems. Despite that, until recently, one of… read more here.

Keywords: multiplicity; multiplicity among; binary fraction; among cool ... See more keywords