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A Search for Radio Emission at the Bottom of the Main Sequence and Beyond

1999/06/07 by Anita Krishnamurthi, G. Leto, Giuseppe Leto +1 · 2 citations
Chemistry · Physics and Astronomy · #Astronomy #Astrophysics #Astrophysics and Star Formation Studies #Brown dwarf #Chemistry #Flux (metallurgy) #Galaxies: Formation, Evolution, Phenomena #Low Mass #Physics #Stars #Stellar, planetary, and galactic studies #astro-ph

paper · pdf · doi:10.1086/301015

10 pages, no figures. Accepted for publication in AJ

arxiv created 1999/06/07 · openalex publication_date 1999/09/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We have used the VLA to conduct a deep search for 3.6 cm radio emission from nearby very low mass stars and brown dwarfs. The Güdel-Benz relation is used to predict radio luminosities for some very low mass stars and candidate brown dwarfs with measured X-ray fluxes. The predicted radio fluxes are quite small, whereas the measured radio flux from the brown dwarf candidate GY 31 in the ρ Oph cloud is relatively strong. In light of our new observations, this object remains an anomaly. We present upper limits for our measured radio fluxes at 3.6 cm for our targets.

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