A measurement of the wind speed on a brown dwarf-Reference-Cited by-同舟云学术

A measurement of the wind speed on a brown dwarf

Published:2020-04-10 Issue:6487 Volume:368 Page:169-172
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Allers Katelyn. N.¹^ORCID,Vos Johanna M.²^ORCID,Biller Beth A.³⁴^ORCID,Williams Peter. K. G.⁵⁶^ORCID

Affiliation:

1. Department of Physics and Astronomy, Bucknell University, Lewisburg, PA 17837-2029, USA.

2. Department of Astrophysics, American Museum of Natural History, New York, NY 10024-5102, USA.

3. Scottish Universities Physics Alliance, Institute for Astronomy, University of Edinburgh, Edinburgh EH9 3HJ, UK.

4. Centre for Exoplanet Science, University of Edinburgh, Edinburgh EH9 3FD, UK.

5. Center for Astrophysics, Harvard Smithsonian, Cambridge, MA 02138-1516, USA.

6. American Astronomical Society, Washington, DC 20006-1681, USA.

Abstract

High winds in an extrasolar atmosphere Brown dwarfs are objects intermediate in mass between large planets and small stars, and their atmospheres share many characteristics with gas giant planets. Wind speeds in Solar System gas giant atmospheres can be derived by comparing the planet's rotational periods in the infrared (tracing the upper atmosphere) and radio (tied to the interior). Allers et al. observed a nearby brown dwarf, 2MASS J10475385+2124234, and determined its infrared and radio periods. They derived an average wind speed of ∼650 meters per second in a west-to-east direction. This technique should also work for exoplanets. Science , this issue p. 169

Funder

Space Telescope Science Institute

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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