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Journal Articles The Astrophysical Journal Letters Year : 2017

First Millimeter Detection of the Disk around a Young, Isolated, Planetary-mass Object

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Amelia Bayo
  • Function : Author
Viki Joergens
  • Function : Author
Yao Liu
  • Function : Author
Robert Brauer
  • Function : Author
Johan Olofsson
Javier Arancibia
  • Function : Author
Paola Pinilla
  • Function : Author
Sebastian Wolf
  • Function : Author
Jan Philipp Ruge
  • Function : Author
Thomas Henning
Antonella Natta
  • Function : Author
Katharine G. Johnston
  • Function : Author
Henrik Beuther

Abstract

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 (∼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}\oplus (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.

Dates and versions

insu-03635002 , version 1 (08-04-2022)

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Cite

Amelia Bayo, Viki Joergens, Yao Liu, Robert Brauer, Johan Olofsson, et al.. First Millimeter Detection of the Disk around a Young, Isolated, Planetary-mass Object. The Astrophysical Journal Letters, 2017, 841, ⟨10.3847/2041-8213/aa7046⟩. ⟨insu-03635002⟩
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