OTS44 is one of only four free-floating planets known to have a disk. We have previously shown that it is the coolest and least massive known free-floating planet (similar to 12 M-Jup) with a substantial disk that is actively accreting. We have obtained Band 6 (233 GHz) ALMA continuum data of this very young disk-bearing object. The data show a clear unresolved detection of the source. We obtained disk-mass estimates via empirical correlations derived for young, higher-mass, central (substellar) objects. The range of values obtained are between 0.07 and 0.63 M-circle plus (dust masses). We compare the properties of this unique disk with those recently reported around higher-mass (brown dwarfs) young objects in order to infer constraints on its mechanism of formation. While extreme assumptions on dust temperature yield disk-mass values that could slightly diverge from the general trends found for more massive brown dwarfs, a range of sensible values provide disk masses compatible with a unique scaling relation between M-dust and M* through the substellar domain down to planetary masses.
| Identifer | oai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/624481 |
| Date | 18 May 2017 |
| Creators | Bayo, Amelia, Joergens, Viki, Liu, Yao, Brauer, Robert, Olofsson, Johan, Arancibia, Javier, Pinilla, Paola, Wolf, Sebastian, Ruge, Jan Philipp, Henning, Thomas, Natta, Antonella, Johnston, Katharine G., Bonnefoy, Mickael, Beuther, Henrik, Chauvin, Gael |
| Contributors | Univ Arizona, Dept Astron, Steward Observ |
| Publisher | IOP PUBLISHING LTD |
| Source Sets | University of Arizona |
| Language | English |
| Detected Language | English |
| Type | Article |
| Rights | © 2017. The American Astronomical Society. All rights reserved. |
| Relation | http://stacks.iop.org/2041-8205/841/i=1/a=L11?key=crossref.44e4b5ecefbf5183efbcd3cb29d79944 |
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