Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A puzzling non-detection of [O III] and [C II] from a $z \approx 7.7$
  galaxy observed with ALMA   Characterizing the galaxy population in the early Universe holds the key to
understanding the evolution of these objects and the role they played in cosmic
reionization. However, the number of observations at the very highest redshifts
are to date, few. In order to shed light on the properties of galaxies in the
high-redshift Universe and their interstellar media, we observe the
Lyman-$\alpha$ emitting galaxy z7\_GSD\_3811 at $z=7.664$ with band 6 and 8 at
the Atacama Large Millimeter/submillimeter Array (ALMA). We target the
far-infrared [O III] 88 $\mu m$, [C II] 158 $\mu m$ emission lines and dust
continuum in the star-forming galaxy z7\_GSD\_3811 with ALMA. We combine these
measurements with earlier observations in the rest-frame ultraviolet (UV) in
order to characterize the object, and compare results to those of earlier
studies observing [O III] and [C II] emission in high-redshift galaxies. The [O
III] 88 $\mu m$ and [C II] 158 $\mu m$ emission lines are undetected at the
position of z7\_GSD\_3811, with $3\sigma$ upper limits of $1.6 \ \times \
10^{8} \ L_{\odot}$ and $4.0 \ \times \ 10^{7} \ L_{\odot}$, respectively. We
do not detect any dust continuum in band 6 nor band 8. The measured rms in the
band 8 and band 6 continuum is 26 and 9.9 $\mu Jy \ beam^{-1}$, respectively.
Similar to several other high-redshift galaxies, z7\_GSD\_3811 exhibits low [C
II] emission for its star formation rate compared to local galaxies.
Furthermore, our upper limit on the [O III] line luminosity is lower than all
the previously observed [O III] lines in high-redshift galaxies with similar
ultraviolet luminosities. Our ALMA band 6 and 8 dust continuum observations
imply that z7\_GSD\_3811 likely has a low dust content, and our non-detections
of the [O III] and [C II] lines could indicate that z7\_GSD\_3811 has a low
metallicity ($Z \lesssim 0.1 \ Z_{\odot}$).

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The categories of this paper are: q-alg
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The categories of this paper are: q-bio
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The categories of this paper are: dg-ga
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The categories of this paper are: quant-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-ex
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The categories of this paper are: adap-org
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-ph
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The categories of this paper are: nlin
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The categories of this paper are: stat
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The categories of this paper are: funct-an
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The categories of this paper are: cs
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The categories of this paper are: math-ph