Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Infrared observations of the recurrent nova T Pyxidis: ancient dust
  basks in the warm glow of the 2011 outburst   We present Spitzer Space Telescope and Herschel Space Observatory infrared
observations of the recurrent nova T Pyx during its 2011 eruption, complemented
by ground-base optical-infrared photometry. We find that the eruption has
heated dust in the pre-existing nebulosity associated with T Pyx. This is most
likely interstellar dust swept up by T Pyx - either during previous eruptions
or by a wind - rather than the accumulation of dust produced during eruptions.

24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat