Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Estrellas h\'ibridas: una aproximaci\'on semi-anal\'itica a T finita   Starting from the semi-analytic construction of a equation of state (EoS)
which takes into account nuclear and quark matter at finite temperature, we
study the possibility that proto-neutron stars, be proto-hybrid stars whose
cores are composed of quark matter. We obtain the mass-radius relationship and
discuss the latest constraints on masses and radii of neutron stars,
considering the pulsars PSR J1614-2230 and PSR J0348 + 0432.

20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
10
The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci