Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: TRAPPIST photometry and imaging monitoring of comet C/2013 R1(Lovejoy):
  Implications for the origin of daughter species   We report the results of the narrow band photometry and imaging monitoring of
comet C/2013 R1 (Lovejoy) with the robotic telescope TRAPPIST (La Silla
observatory). We gathered around 400 images over 8 months pre- and
post-perihelion between September 12, 2013 and July 6, 2014. We followed the
evolution of the OH, NH, CN, C3 , and C2 production rates computed with the
Haser model as well as the evolution of the dust production. All five gas
species display an asymmetry about perihelion, the rate of brightening being
steeper than the rate of fading. The study of the coma morphology reveals gas
and dust jets which indicate one or several active zone(s) on the nucleus. The
dust, C2 , and C3 morphologies present some similarities while the CN
morphology is different. OH and NH are enhanced in the tail direction. The
study of the evolution of the comet activity shows that the OH, NH, and C2
production rates evolution with the heliocentric distance is correlated to the
dust evolution. The CN and, to a lesser extent, the C3 do not display such a
correlation with the dust. These evidences and the comparison with parent
species production rates indicate that C2 and C3 on one side and OH and NH on
the other side could be -at least partially- released from organic-rich grains
and icy grains. On the contrary, all evidences point to HCN being the main
parent of CN in this comet.

28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn