# # Program information file # PROGRAM_ID 2022B060 PROGRAM_TITLE Searching for the Companions to Brown Dwarfs Showing the Cyclotron Maser Instability PROGRAM_INV1 Christopher Johns-Krull PROGRAM_INV2 Lisa Prato PROGRAM_INV3 Asa Stahl PROGRAM_INV4 Shih-Yun Tang PROGRAM_INV5 Andrea Isella PROGRAM_SCICAT extra-solar planets PROGRAM_ABSTRACT_BEG Brown dwarfs are known to host planets; however, the full range of planets that can be formed around these objects is unknown largely because of the difficulty in finding and characterizing planets around these very low mass, faint objects. A small number of brown dwarfs are known to emit low frequency radio emission due to the Cyclotron Maser Instability [CMI], and the physics behind the CMI strongly indicates there are close companions to these Brown Dwarfs feeding energetic particles into their magnetospheres in analogy to the Jupiter-Io system. We will use iSHELL to measure K band radial velocities on a well chosen example of these systems to look for the predicted companions. PROGRAM_ABSTRACT_END