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arXiv:1303.3028astro-ph.SR

Stellar Multiplicity

Gaspard Duchêne, Adam Kraus

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Abstract

Stellar multiplicity is an ubiquitous outcome of the star formation process. Characterizing the frequency and main characteristics of multiple systems and their dependencies on primary mass and environment is therefore a powerful tool to probe this process. While early attempts were fraught with selection biases and limited completeness, instrumentation breakthroughs in the last two decades now enable robust analyses. In this review, we summarize our current empirical knowledge of stellar multiplicity for Main Sequence stars and brown dwarfs, as well as among populations of Pre-Main Sequence stars and embedded protostars. Clear trends as a function of both primary mass and stellar evolutionary stage are identified that will serve as a comparison basis for numerical and analytical models of star formation.

arXiv comments
original version submitted to ARA&A, final version to appear in vol. 51, comments welcome, 38 pages, 5 figures
Journal reference
DOI
doi:10.1146/annurev-astro-081710-102602
Subjects
astro-ph.SRSolar and Stellar Astrophysics

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Discussed in comments2 threads

  1. When a black hole and a neutron star merge 1 comment

    • Good question! I'll try an answer and hope it's a good balance between accuracy and what I guess is your (and other readers') knowledge of astrophysics. [tl;dr: a neutron star (NS) and black hole (BH) in a close binary are practically guaranteed to "crash" into each other…

      raattgiftView on HNParent context

  2. Physicists propose new theories of black holes from the very early universe 1 comment

    • Given that how common it is to find massive stars in multiple systems, it would be surprising not to find systems of compact massive objects that are remnants of these. OTOH, who knows about intermediate mass BHs and beyond. Aggregation of these multiple systems of CMOs? Let's…

      raattgiftView on HNParent context

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