Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A tale of two clusters: dynamical history determines disc survival in
  Tr14 and Tr16 in the Carina Nebula   Understanding how the birthplace of stars affects planet-forming discs is
important for a comprehensive theory of planet formation. Most stars are born
in dense star-forming regions where the external influence of other stars,
particularly the most massive stars, will affect the survival and enrichment of
their planet-forming discs. Simulations suggest that stellar dynamics play a
central role in regulating how external feedback affects discs, but comparing
models to observations requires an estimate of the initial stellar density in
star-forming regions. Structural analyses constrain the amount of dynamical
evolution a star-forming region has experienced; regions that maintain
substructure and do not show mass segregation are likely dynamically young, and
therefore close to their birth density. In this paper, we present a structural
analysis of two clusters in the Carina Nebula, Tr14 and Tr16. We show that
neither cluster shows evidence for mass segregation or a centrally concentrated
morphology, suggesting that both regions are dynamically young. This allows us
to compare to simulations from Nicholson et al. (2019) who predict disc
survival rates in star-forming regions of different initial densities. The
surviving disc fractions in Tr14 and Tr16 are consistent with their predictions
(both are $\sim 10$%), supporting a growing body of evidence that the
star-forming environment plays an important role in the survival and enrichment
of protoplanetary discs.

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The categories of this paper are: chem-ph
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
31
The categories of this paper are: ao-sci