Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Redshift and the Host Galaxy of GRB 980613: A Gamma-Ray Burst From a
  Merger-Induced Starburst?   We present optical and near-IR identification and spectroscopy of the host
galaxy of GRB 980613. The burst was apparently associated with the optically
(restframe UV) brightest component of a system of at least five galaxies or
galaxy fragments at a redshift of z = 1.0969. The component we identify as the
host galaxy shows a moderately high unobscured star formation rate, SFR = 5
M_solar/yr, but a high SFR per unit mass, indicative of a starburst. The image
components show a broad range of (R-K) colors, with two of them being very red,
possibly due to dust. Overall morphology of the system can be naturally
interpreted as a strong tidal interaction of two or more galaxies, at a
redshift where such events were much more common than now. Given the well
established causal link between galaxy mergers and starbursts, we propose that
this is a strong case for a GRB originating from a merger-induced starburst
system. This supports the proposed link between GRBs and massive star
formation.

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The categories of this paper are: hep-ex
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The categories of this paper are: math
25
The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
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The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
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The categories of this paper are: q-alg
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The categories of this paper are: stat
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The categories of this paper are: math-ph
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio
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The categories of this paper are: physics
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The categories of this paper are: cmp-lg
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The categories of this paper are: mtrl-th