A Search for Radio Emission at the Bottom of the Main Sequence and Beyond
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 rho 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.
- Publication:
-
The Astronomical Journal
- Pub Date:
- September 1999
- DOI:
- 10.1086/301015
- arXiv:
- arXiv:astro-ph/9906116
- Bibcode:
- 1999AJ....118.1369K
- Keywords:
-
- STARS: ACTIVITY;
- STARS: LOW-MASS;
- BROWN DWARFS;
- STARS: MAGNETIC FIELDS;
- Astrophysics
- E-Print:
- 10 pages, no figures. Accepted for publication in AJ