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Characterizing the youngest protostellar disks with the IRAM-PdBI and ALMA interferometers

Published online by Cambridge University Press:  13 January 2020

Anaëlle Maury Open the ORCID record for Anaëlle Maury [Opens in a new window]
Anaëlle Maury*
Affiliation:
AIM, CEA, CNRS, Université Paris-Saclay, Université Paris Diderot, Sorbonne Paris Cité, F-91191 Gif-sur-Yvette, France email: [email protected]
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Abstract

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I present our observations and modeling of the 1.3 mm and 3.18 mm dust continuum emission in Class 0 protostars, from the IRAM-PdBI CALYPSO survey. We show that most protostars are better reproduced by models including a disk-like dust continuum component contributing to the flux at small scales, but less than 25% of these candidate protostellar disks are resolved at radii >60 au, which favors magnetized models of rotating protostellar collapse for disk formation (Maury et al. 2019). I also present new ALMA observations of the molecular line emission in the IRAM04191 protostar, suggesting a small counter-rotating disk is detected in this young low-luminosity solar-type protostar. Finally, I show our ALMA observations of the magnetic field topology in the B335 protostar, which when compared to the typical output from protostellar collapse models, suggest the magnetic field might be responsible for constraining the disk size to remain very small in this protostar (Maury et al. 2018).

Keywords

stars: formationISM: individual (L1448, NGC1333, Serpens South, Serpens Main, L1157, GF9-2, L1527, IRAM04191, B335)ISM: magnetic fields
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S345: Origins: From the Protosun to the First Steps of Life , August 2018 , pp. 91 - 95
Copyright
© International Astronomical Union 2020 

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