Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: UGC 7069: The largest ring galaxy   We find that UGC 7069 is the largest ring galaxy known to date. In this
Letter, we present a multiwavelength study of this galaxy (combining radio,
2MASS, optical and ultraviolet data). The ring of UGC 7069, whose diameter
measures ~115 kpc, is also warped at its edges. The nucleus appears
double-peaked and hosts a possible LINER. The ultraviolet data indicate a
strong blue colour and suggest that UGC 7069 is a starburst galaxy. We also
present N-body simulation results, which indicate that galaxy collisions can
produce such huge rings. Large inclination angles between the target and the
intruder galaxy may account for the formation of warped rings. Multiwavelength
observations are highly essential to constrain our simulation results, which
will address the formation and evolution of such a rare galaxy.

24
The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
10
The categories of this paper are: q-bio
34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat