An ALMA Dynamical Mass Estimate of the Proposed Planetary-mass Companion FW Tau C

Ya Lin Wu, Patrick D. Sheehan

研究成果: 雜誌貢獻期刊論文同行評審

13 引文 斯高帕斯(Scopus)

摘要

Dynamical mass estimates down to the planet-mass regime can help to understand planet formation. We present Atacama Large Millimeter/submillimeter Array (ALMA) 1.3 mm observations of FW Tau C, a proposed ∼10 MJup planet-mass companion at ∼330 au from the host binary FW Tau AB. We spatially and spectrally resolve the accretion disk of FW Tau C in 12CO (2-1). By modeling the Keplerian rotation of gas, we derive a dynamical mass of ∼0.1 M. Therefore, FW Tau C is unlikely a planet, but rather a low-mass star with a highly inclined disk. This also suggests that FW Tau is a triple system consisting of three ∼0.1 M stars.

原文英語
文章編號L26
期刊Astrophysical Journal Letters
846
發行號2
DOIs
出版狀態已發佈 - 2017 9月 10
對外發佈

ASJC Scopus subject areas

  • 天文和天體物理學
  • 空間與行星科學

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