Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Determining dispersal mechanisms of protoplanetary disks using accretion
  and wind mass loss rates   Understanding the origin of accretion and dispersal of protoplanetary disks
is fundamental for investigating planet formation. Recent numerical simulations
show that launching winds are unavoidable when disks undergo magnetically
driven accretion and/or are exposed to external UV radiation. Observations also
hint that disk winds are common. We explore how the resulting wind mass loss
rate can be used as a probe of both disk accretion and dispersal. As a
proof-of-concept study, we focus on magnetocentrifugal winds, MRI
(magnetorotational instability) turbulence, and external photoevapotaion. By
developing a simple, yet physically motivated disk model and coupling it with
simulation results available in the literature, we compute the mass loss rate
as a function of external UV flux for each mechanism. We find that different
mechanisms lead to different levels of mass loss rate, indicating that the
origin of disk accretion and dispersal can be determined, by observing the wind
mass loss rate resulting from each mechanism. This determination provides
important implications for planet formation. This work thus shows that the
ongoing and future observations of the wind mass loss rate for protoplanetary
disks are paramount to reliably constrain how protoplanetary disks evolve with
time and how planet formation takes place in the disks.

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The categories of this paper are: cond-mat
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The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
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The categories of this paper are: physics
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The categories of this paper are: mtrl-th
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The categories of this paper are: supr-con
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The categories of this paper are: chem-ph
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The categories of this paper are: econ
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The categories of this paper are: comp-gas