ALMA observations of the young substellar binary system 2M1207

L. Ricci; P. Cazzoletti; I. Czekala; S. M. Andrews; D. Wilner; L. Szűcs; G. Lodato; L. Testi; I. Pascucci; S. Mohanty; D. Apai; J. M. Carpenter; B. P. Bowler

doi:10.3847/1538-3881/aa78a0

ALMA observations of the young substellar binary system 2M1207

L. Ricci^*, P. Cazzoletti, I. Czekala, S. M. Andrews, D. Wilner, L. Szűcs, G. Lodato, L. Testi, I. Pascucci, S. Mohanty, D. Apai, J. M. Carpenter, B. P. Bowler

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

We present ALMA observations of the 2M1207 system, a young binary made of a brown dwarf with a planetary-mass companion at a projected separation of about 40 au. We detect emission from dust continuum at 0.89 mm and from the J=3-2 rotational transition of CO from a very compact disk around the young brown dwarf. The small radius found for this brown dwarf disk may be due to truncation from the tidal interaction with the planetary-mass companion. Under the assumption of optically thin dust emission, we estimate a dust mass of 0.1 M ⊕ for the 2M1207A disk and a 3σ upper limit of ∼1 M_Moon for dust surrounding 2M1207b, which is the tightest upper limit obtained so far for the mass of dust particles surrounding a young planetary-mass companion. We discuss the impact of this and other non-detections of young planetary-mass companions for models of planet formation that predict circumplanetary material to surround these objects.

Original language	English
Article number	24
Number of pages	8
Journal	Astronomical Journal
Volume	154
Issue number	1
Early online date	27 Jun 2017
DOIs	https://doi.org/10.3847/1538-3881/aa78a0
Publication status	Published - 1 Jul 2017

Keywords

Circumstellar matter
Planets and satellites: formation
Stars: individual: 2M1207
Submillimeter: stars

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Ricci_2017_AJ_154_24
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ALMA observations of the young substellar binary system 2M1207 (code)
Czekala, I. (Creator), GitHub, 2023
https://github.com/iancze/DiskJockey
Dataset: Software

Cite this

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title = "ALMA observations of the young substellar binary system 2M1207",

abstract = "We present ALMA observations of the 2M1207 system, a young binary made of a brown dwarf with a planetary-mass companion at a projected separation of about 40 au. We detect emission from dust continuum at 0.89 mm and from the J=3-2 rotational transition of CO from a very compact disk around the young brown dwarf. The small radius found for this brown dwarf disk may be due to truncation from the tidal interaction with the planetary-mass companion. Under the assumption of optically thin dust emission, we estimate a dust mass of 0.1 M ⊕ for the 2M1207A disk and a 3σ upper limit of ∼1 MMoon for dust surrounding 2M1207b, which is the tightest upper limit obtained so far for the mass of dust particles surrounding a young planetary-mass companion. We discuss the impact of this and other non-detections of young planetary-mass companions for models of planet formation that predict circumplanetary material to surround these objects.",

keywords = "Circumstellar matter, Planets and satellites: formation, Stars: individual: 2M1207, Submillimeter: stars",

author = "L. Ricci and P. Cazzoletti and I. Czekala and Andrews, {S. M.} and D. Wilner and L. Sz{\H u}cs and G. Lodato and L. Testi and I. Pascucci and S. Mohanty and D. Apai and Carpenter, {J. M.} and Bowler, {B. P.}",

note = "Funding: J.M.C. acknowledges support from the National Aeronautics and Space Administration under Grant No. 15XRP15_20140 issued through the Exoplanets Research Program. Support for this work was provided by NASA through Hubble Fellowship grant HST-HF2-51369.001-A awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under contract NAS5-26555.",

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T1 - ALMA observations of the young substellar binary system 2M1207

AU - Ricci, L.

AU - Cazzoletti, P.

AU - Czekala, I.

AU - Andrews, S. M.

AU - Wilner, D.

AU - Szűcs, L.

AU - Lodato, G.

AU - Testi, L.

AU - Pascucci, I.

AU - Mohanty, S.

AU - Apai, D.

AU - Carpenter, J. M.

AU - Bowler, B. P.

N1 - Funding: J.M.C. acknowledges support from the National Aeronautics and Space Administration under Grant No. 15XRP15_20140 issued through the Exoplanets Research Program. Support for this work was provided by NASA through Hubble Fellowship grant HST-HF2-51369.001-A awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under contract NAS5-26555.

PY - 2017/7/1

Y1 - 2017/7/1

N2 - We present ALMA observations of the 2M1207 system, a young binary made of a brown dwarf with a planetary-mass companion at a projected separation of about 40 au. We detect emission from dust continuum at 0.89 mm and from the J=3-2 rotational transition of CO from a very compact disk around the young brown dwarf. The small radius found for this brown dwarf disk may be due to truncation from the tidal interaction with the planetary-mass companion. Under the assumption of optically thin dust emission, we estimate a dust mass of 0.1 M ⊕ for the 2M1207A disk and a 3σ upper limit of ∼1 MMoon for dust surrounding 2M1207b, which is the tightest upper limit obtained so far for the mass of dust particles surrounding a young planetary-mass companion. We discuss the impact of this and other non-detections of young planetary-mass companions for models of planet formation that predict circumplanetary material to surround these objects.

AB - We present ALMA observations of the 2M1207 system, a young binary made of a brown dwarf with a planetary-mass companion at a projected separation of about 40 au. We detect emission from dust continuum at 0.89 mm and from the J=3-2 rotational transition of CO from a very compact disk around the young brown dwarf. The small radius found for this brown dwarf disk may be due to truncation from the tidal interaction with the planetary-mass companion. Under the assumption of optically thin dust emission, we estimate a dust mass of 0.1 M ⊕ for the 2M1207A disk and a 3σ upper limit of ∼1 MMoon for dust surrounding 2M1207b, which is the tightest upper limit obtained so far for the mass of dust particles surrounding a young planetary-mass companion. We discuss the impact of this and other non-detections of young planetary-mass companions for models of planet formation that predict circumplanetary material to surround these objects.

KW - Circumstellar matter

KW - Planets and satellites: formation

KW - Stars: individual: 2M1207

KW - Submillimeter: stars

U2 - 10.3847/1538-3881/aa78a0

DO - 10.3847/1538-3881/aa78a0

M3 - Article

SN - 0004-6256

VL - 154

JO - Astronomical Journal

JF - Astronomical Journal

IS - 1

M1 - 24

ER -

ALMA observations of the young substellar binary system 2M1207

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Keywords

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ALMA observations of the young substellar binary system 2M1207 (code)

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