Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A globular cluster in the dwarf galaxy Sextans B   We present spectroscopic observations of a massive globular cluster in the
dwarf irregular galaxy Sextans B, discovered by us on Hubble Space Telescope
Wide Field and Planetary Camera 2 (HST WFPC2) images. Long-slit spectra were
obtained with the SCORPIO spectrograph on the the 6-m telescope at the Special
Astrophysical observatory of the Russian Academy of Sciences. We determine age,
metallicity and alpha-element abundance ratio for the globular cluster to be $
2 \pm 1$ Gyr, $-1.35 \pm 0.25$ dex, and $ 0.1 \pm 0.1$ dex, respectively. Main
photometric and structural parameters of it were determined using our surface
photometry on the HST images. The mass ($\sim 10^5 M \sun$), luminosity and
structural parameters appear to be typical for the globular clusters in our own
Galaxy. Our findings shed a new light on the evolutionary history of Sextans B.

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The categories of this paper are: comp-gas
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
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The categories of this paper are: solv-int
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The categories of this paper are: eess
10
The categories of this paper are: q-bio
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The categories of this paper are: q-alg
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The categories of this paper are: chem-ph
2
The categories of this paper are: math
3
The categories of this paper are: physics
15
The categories of this paper are: nucl-ex
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The categories of this paper are: adap-org
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The categories of this paper are: dg-ga
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The categories of this paper are: funct-an