publication . Conference object . 2021

Probing the magnetospheric accretion region of the young system DoAr 44 using VLTI/GRAVITY

Bouvier Jerome; Perraut Karine; Alecian Evelyne;
Open Access
  • Published: 26 Feb 2021
Abstract
Young stars accrete material from their circumstellar disk through magnetically-controlled funnel flows. This so-called magnetospheric accretion process is central to the properties of young systems and not yet fully deciphered. We report here on an attempt to directly probe the star-disk interaction region a scale of less than 0.1 au in the young system DoAr 44, using with VLTI/GRAVITY in the K-band. We computed interferometric visibilities and phases in the continuum and in the Br$\gamma$ line in order to constrain the extent and geometry of the emitting regions. We resolve the continuum emission of the inner dusty disk and measure a half-flux radius of 0.14 a...
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Subjects
arXiv: Astrophysics::Galaxy AstrophysicsAstrophysics::Earth and Planetary AstrophysicsAstrophysics::Solar and Stellar AstrophysicsAstrophysics::High Energy Astrophysical PhenomenaAstrophysics::Cosmology and Extragalactic Astrophysics
free text keywords: Young stars
Funded by
EC| SPIDI
Project
SPIDI
Star-Planet-Inner Disk Interactions (SPIDI): unveiling the formation and evolution of inner planetary systems
  • Funder: European Commission (EC)
  • Project Code: 742095
  • Funding stream: H2020 | ERC | ERC-ADG
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Conference object . 2021
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