Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effect of planet ingestion on low-mass stars evolution: the case of
  2MASS J08095427--4721419 star in the Gamma Velorum cluster   We analysed the effects of planet ingestion on the characteristics of a
pre-MS star similar to the Gamma Velorum cluster member 2MASS
J08095427--4721419 (#52). We discussed the effects of changing the age $t_0$ at
which the accretion episode occurs, the mass of the ingested planet and its
chemical composition. We showed that the mass of the ingested planet required
to explain the current [Fe/H]^#52 increases by decreasing the age $t_0$ and/or
by decreasing the Iron content of the accreted matter.
  We compared the predictions of a simplified accretion method -- where only
the variation of the surface chemical composition is considered -- with that of
a full accretion model that properly accounts for the modification of the
stellar structure. We showed that the two approaches result in different
convective envelope extension which can vary up to 10 percent. We discussed the
impact of the planet ingestion on a stellar model in the colour-magnitude
diagram, showing that a maximum shift of about 0.06 dex in the colour and 0.07
dex in magnitude are expected and that such variations persist even much later
the accretion episode. We also analysed the systematic bias in the stellar mass
and age inferred by using a grid of standard non accreting models to recover
the characteristics of an accreting star. We found that standard non accreting
models can safely be adopted for mass estimate, as the bias is <= 6 percent,
while much more caution should be used for age estimate where the differences
can reach about 60 percent.

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The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
18
The categories of this paper are: econ
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
4
The categories of this paper are: cond-mat