Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A near-ultraviolet view of the Inner Region of M31 with the Large
  Binocular Telescope   We present a 900 sec, wide-field U image of the inner region of the Andromeda
galaxy obtained during the commissioning of the blue channel of the Large
Binocular Camera mounted on the prime focus of the Large Binocular Telescope.
Relative photometry and absolute astrometry of individual sources in the image
was obtained along with morphological parameters aimed at discriminating
between stars and extended sources, e.g. globular clusters. The image unveils
the near-ultraviolet view of the inner ring of star formation recently
discovered in the infrared by the Spitzer Space Telescope and shows in great
detail the fine structure of the dust lanes associated with the galaxy inner
spiral arms. The capabilities of the blue channel of the Large Binocular Camera
at the Large Binocular Telescope (LBC-Blue) are probed by direct comparison
with ultraviolet GALEX observations of the same region in M31. We discovered 6
new candidate stellar clusters in this high-background region of M31. We also
recovered 62 bona-fide globulars and 62 previously known candidates from the
Revised Bologna Catalogue of the M31 globular clusters, and firmly established
the extended nature of 19 of them.

22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
4
The categories of this paper are: cond-mat
3
The categories of this paper are: physics
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
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The categories of this paper are: quant-ph
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The categories of this paper are: eess