trailThe X-ray absorption column density toward HESS J1731-347 exceeds the total foreground gas column in front of the Scutum-Crux arm
X-ray absorption compared with CO and HI gas columns places HESS J1731-347 at least 3.2 kiloparsecs away
X-ray spectral fits toward HESS J1731-347 yield absorption columns of roughly 1.0 to 1.5 × 10^22 hydrogen atoms per square centimeter
atomic
The X-ray-absorbing material toward HESS J1731-347 is distributed along the line of sight rather than concentrated near 3 kiloparsecs
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The spatial pattern of X-ray absorption across HESS J1731-347 correlates with Scutum-Crux arm molecular gas
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+1 more
assumed
CO and HI emission toward HESS J1731-347 arises predominantly from gas on the near side of the Galaxy
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The X-ray absorption column density toward HESS J1731-347 exceeds the total foreground gas column in front of the Scutum-Crux arm
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1depended on by
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