WISEP J060738.65+242953.4: A Nearby. Pole-On L8 Brown Dwarf with Radio Emission
| dc.contributor.author | Gizis, John E. | |
| dc.contributor.author | Williams, Peter K. G. | |
| dc.contributor.author | Burgasser, Adam J. | |
| dc.contributor.author | Libralato, Mattia | |
| dc.contributor.author | Nardiello, Domenico | |
| dc.contributor.author | Piotto, Giampaolo | |
| dc.contributor.author | Bedin, Luigi R. | |
| dc.contributor.author | Berger, Edo | |
| dc.contributor.author | Paudel, Rishi R. | |
| dc.date.accessioned | 2022-02-14T15:30:22Z | |
| dc.date.available | 2022-02-14T15:30:22Z | |
| dc.date.issued | 2016-10-19 | |
| dc.description.abstract | We present a simultaneous, multi-wavelength campaign targeting the nearby (7.2 pc) L8/L9 (optical/near-infrared) dwarf WISEP J060738.65+242953.4 in the mid-infrared, radio, and optical. Spitzer Space Telescope observations show no variability at the 0.2% level over 10 hours each in the 3.6 and 4.5 micron bands. Kepler K2 monitoring over 36 days in Campaign 0 rules out stable periodic signals in the optical with amplitudes great than 1.5% and periods between 1.5 hours and 2 days. Non-simultaneous Gemini optical spectroscopy detects lithium, constraining this L dwarf to be less than ∼ 2 Gyr old, but no Balmer emission is observed. The low measured projected rotation velocity (v sin i < 6 km s−1) and lack of variability are very unusual compared to other brown dwarfs, and we argue that this substellar object is likely viewed pole-on. We detect quiescent (non-bursting) radio emission with the VLA. Amongst radio detected L and T dwarfs, it has the lowest observed Lν and the lowest v sin i. We discuss the implications of a pole-on detection for various proposed radio emission scenarios | en_US |
| dc.description.sponsorship | This paper includes data collected by the Kepler mis sion. Funding for the Kepler mission is provided by the NASA Science Mission directorate. The material is based in part upon work supported by NASA under award No. NNX15AV664G. This work is based in part on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. Support for this work was provided by NASA through an award issued by JPL/Caltech. EB acknowledges support from the National Science Foundation through Grant AST-1008361. This work is based in part on observations obtained at the Gemini Observa tory, which is operated by the Association of Universities for Research in Astronomy (AURA) under a cooperative agreement with the NSF on behalf of the Gemini partnership: the National Science Foundation (United States), the Science and Technology Facilities Coun cil (United Kingdom), the National Research Council (Canada), CONICYT (Chile), the Australian Research Council (Australia), CNPq (Brazil) and CONICET (Argentina). Some of the data presented herein were obtained at the W.M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W.M. Keck Foundation. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. | en_US |
| dc.description.uri | https://iopscience.iop.org/article/10.3847/0004-6256/152/5/123 | en_US |
| dc.format.extent | 10 pages | en_US |
| dc.genre | journal articles | en_US |
| dc.genre | preprints | en_US |
| dc.identifier | doi:10.13016/m23vl1-s2gz | |
| dc.identifier.citation | Gizis, John E. Et al. WISEP J060738.65+242953.4: A NEARBY POLE-ON L8 BROWN DWARF WITH RADIO EMISSION. The Astrophysical Journal 152 (Oct. 19, 2016), no. 5. https://doi.org/10.3847/0004-6256/152/5/123 | en_US |
| dc.identifier.uri | https://doi.org/10.3847/0004-6256/152/5/123 | |
| dc.identifier.uri | http://hdl.handle.net/11603/24257 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | IOP | en_US |
| dc.relation.isAvailableAt | The University of Maryland, Baltimore County (UMBC) | |
| dc.relation.ispartof | UMBC Center for Space Sciences and Technology | |
| dc.rights | This item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author. | en_US |
| dc.title | WISEP J060738.65+242953.4: A Nearby. Pole-On L8 Brown Dwarf with Radio Emission | en_US |
| dc.type | Text | en_US |
| dcterms.creator | https://orcid.org/0000-0002-8090-3570 | en_US |