ALMA Observations of the Young Substellar Binary System 2M1207

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

Research output: Research - peer-reviewArticle

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Abstract

We present ALMA observations of the 2M1207 system, a young binary made of a brown dwarf with a planetarymass 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 planetarymass companion. Under the assumption of optically thin dust emission, we estimate a dust mass of 0.1M for the 2M1207A disk and a 3σ upper limit of ∼1MMoon 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.

LanguageEnglish (US)
Article number24
JournalAstronomical Journal
Volume154
Issue number1
DOIs
StatePublished - Jul 1 2017

Fingerprint

dust
young
planetary mass
planet
material
particle
planets
continuums
radii
estimates
approximation
interactions

Keywords

  • circumstellar matter
  • planets and satellites: formation
  • stars: individual (2M1207)
  • submillimeter: stars

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Ricci, L., Cazzoletti, P., Czekala, I., Andrews, S. M., Wilner, D., Szcs, L., ... Bowler, B. P. (2017). ALMA Observations of the Young Substellar Binary System 2M1207. Astronomical Journal, 154(1), [24]. DOI: 10.3847/1538-3881/aa78a0

ALMA Observations of the Young Substellar Binary System 2M1207. / Ricci, L.; Cazzoletti, P.; Czekala, I.; Andrews, S. M.; Wilner, D.; Szcs, L.; Lodato, G.; Testi, L.; Pascucci, I.; Mohanty, S.; Apai, D.; Carpenter, J. M.; Bowler, B. P.

In: Astronomical Journal, Vol. 154, No. 1, 24, 01.07.2017.

Research output: Research - peer-reviewArticle

Ricci, L, Cazzoletti, P, Czekala, I, Andrews, SM, Wilner, D, Szcs, L, Lodato, G, Testi, L, Pascucci, I, Mohanty, S, Apai, D, Carpenter, JM & Bowler, BP 2017, 'ALMA Observations of the Young Substellar Binary System 2M1207' Astronomical Journal, vol 154, no. 1, 24. DOI: 10.3847/1538-3881/aa78a0
Ricci L, Cazzoletti P, Czekala I, Andrews SM, Wilner D, Szcs L et al. ALMA Observations of the Young Substellar Binary System 2M1207. Astronomical Journal. 2017 Jul 1;154(1). 24. Available from, DOI: 10.3847/1538-3881/aa78a0
Ricci, L. ; Cazzoletti, P. ; Czekala, I. ; Andrews, S. M. ; Wilner, D. ; Szcs, L. ; Lodato, G. ; Testi, L. ; Pascucci, I. ; Mohanty, S. ; Apai, D. ; Carpenter, J. M. ; Bowler, B. P./ ALMA Observations of the Young Substellar Binary System 2M1207. In: Astronomical Journal. 2017 ; Vol. 154, No. 1.
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