Landing page for project EG126

Observations of ultracool dwarfs (UCD) at radio wavelengths have opened a new window to probe the nature of their radio emission. An increasing number of UCDs are being detected with VLBI arrays, providing unique insights on the mechanisms responsible for the detected emission, the morphology of their magnetospheres, and the characterization of the orbital motion in binary systems. We request sensitive C-band EVN observations of two radio emitting cool binaries, LP388-55, and J1119-1137, which show remarkable features in relation with exoplanetary studies. We aim to i) search for compact radio emission in LP355-88, an ideal double main-sequence candidate for astrometric planetary search, and ii) explore the origin of the radio emission detected with connected arrays from the planetary-mass binary J1119-1137. In the latter case, we could confirm the possible first emission ever seen originated directly in a planetary mass object.

This data is part of the archive of VLBI data maintained by JIVE on behalf of the EVN, a network of radio telescopes located primarily in Europe and Asia, with additional antennas in South Africa. The EVN archive itself has the DOI https://doi.org/10.17616/R3Z197