Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Signatures of minor mergers in the Milky Way disc I: The SEGUE stellar
  sample   It is now known that minor mergers are capable of creating structure in the
phase-space distribution of their host galaxy's disc. In order to search for
such imprints in the Milky Way, we analyse the SEGUE F/G-dwarf and the Schuster
et al. (2006) stellar samples. We find similar features in these two completely
independent stellar samples, consistent with the predictions of a Milky Way
minor-merger event. We next apply the same analyses to high-resolution,
idealised N-body simulations of the interaction between the Sagittarius dwarf
galaxy and the Milky Way. The energy distributions of stellar particle samples
in small spatial regions in the host disc reveal strong variations of structure
with position. We find good matches to the observations for models with a mass
of Sagittarius' dark matter halo progenitor $\lessapprox 10^{11}$ M$_{\odot}$.
Thus, we show that this kind of analysis could be used to provide
unprecedentedly tight constraints on Sagittarius' orbital parameters, as well
as place a lower limit on its mass.

20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
19
The categories of this paper are: eess
26
The categories of this paper are: bayes-an
16
The categories of this paper are: stat
17
The categories of this paper are: q-fin
29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
34
The categories of this paper are: chem-ph