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@article{Mulders:2017:1538-4357/aa8906,
author = {Mulders, GD and Pascucci, I and Manara, CF and Testi, L and Herczeg, GJ and Henning, T and Mohanty, S and Lodato, G},
doi = {1538-4357/aa8906},
journal = {Astrophysical Journal},
title = {Constraints from dust mass and mass accretion rate measurements on angular momentum transport in protoplanetary disks},
url = {http://dx.doi.org/10.3847/1538-4357/aa8906},
volume = {847},
year = {2017}
}

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TY  - JOUR
AB  - In this paper, we investigate the relation between disk mass and mass accretion rate to constrain the mechanism ofangular momentum transport in protoplanetary disks. We find a correlation between dust disk mass and mass accretionrate in Chamaeleon I with a slope that is close to linear, similar to the one recently identified in Lupus. We investigatethe effect of stellar mass and find that the intrinsic scatter around the best-fit Mdust–M and M acc–M relations isuncorrelated. We simulate synthetic observations of an ensemble of evolving disks using a Monte Carlo approach andfind that disks with a constant α viscosity can fit the observed relations between dust mass, mass accretion rate, andstellar mass but overpredict the strength of the correlation between disk mass and mass accretion rate when usingstandard initial conditions. We find two possible solutions. In the first one, the observed scatter in Mdust and M acc is notprimordial, but arises from additional physical processes or uncertainties in estimating the disk gas mass. Most likelygrain growth and radial drift affect the observable dust mass, while variability on large timescales affects the massaccretion rates. In the second scenario, the observed scatter is primordial, but disks have not evolved substantially at theage of Lupus and Chamaeleon I owing to a low viscosity or a large initial disk radius. More accurate estimates of thedisk mass and gas disk sizes in a large sample of protoplanetary disks, through either direct observations of the gas orspatially resolved multiwavelength observations of the dust with ALMA, are needed to discriminate between bothscenarios or to constrain alternative angular momentum transport mechanisms such as MHD disk wi
AU  - Mulders,GD
AU  - Pascucci,I
AU  - Manara,CF
AU  - Testi,L
AU  - Herczeg,GJ
AU  - Henning,T
AU  - Mohanty,S
AU  - Lodato,G
DO  - 1538-4357/aa8906
PY  - 2017///
SN  - 0004-637X
TI  - Constraints from dust mass and mass accretion rate measurements on angular momentum transport in protoplanetary disks
T2  - Astrophysical Journal
UR  - http://dx.doi.org/10.3847/1538-4357/aa8906
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000411341100007&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/57770
VL  - 847
ER  -

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