Sulphur x-ray absorption in the local ısm

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1 JanuaryAuthor
Gatuzz, EfrainGorczyca T.W.
Hasoglu M.F.
Costantini E.
García, Javier A.
Kallman, Timothy R.
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Gatuzz E., Gorczyca T.W., Hasoglu M.F., Costantini E., Garcia J.A. & Kallman T.R. (2024). Sulphur x-ray absorption in the local ısm. Monthly Notices of the Royal Astronomical Society. (527, 2, 1648-1655.). https://doi.org/10.1093/mnras/stad3231.Abstract
We present a study S K-edge using high-resolution HETGS Chandra spectra of 36 low-mass X-ray binaries. For each source, we have estimated column densities for S i, S ii, S iii, S xiv, S xv, and S xvi ionic species, which trace the neutral, warm, and hot phases of the Galactic interstellar medium. We also estimated column densities for a sample of interstellar dust analogues. We measured their distribution as a function of Galactic latitude, longitude, and distances to the sources. While the cold-warm column densities tend to decrease with the Galactic latitude, we found no correlation with distances or Galactic longitude. This is the first detailed analysis of the sulphur K-edge absorption due to ISM using high-resolution X-ray spectra. © 2023 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.