Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The contact system DF Hya revisited   New BVRI CCD photometric observations of the contact system DF Hya have been
obtained. The light curves were analyzed with the Wilson-Devinney code and new
geometric and photometric elements were derived. Moreover, the light curve
solution, with the assumption of a third light in the system, revealed the
existence of a tertiary component around the eclipsing pair. The present
results are compared with those of other recent studies.

23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
7
The categories of this paper are: hep-th
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat
8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph