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arXiv · 2310.11498

Sulfur X-ray absorption in the local ISM

Efrain Gatuzz·T. W. Gorczyca·M. F. Hasoglu·E. Costantini·Javier A. García·Timothy R. Kallman
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Abstract

We present a study S K-edge using high-resolution HETGS {\it Chandra} spectra of 36 low-mas X-ray binaries. For each source, we have estimated column densities for {\rm S}~{\sc i}, {\rm S}~{\sc ii}, {\rm S}~{\sc iii}, {\rm S}~{\sc xiv}, {\rm S}~{\sc xv} and {\rm S}~{\sc 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 analogs. 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 sulfur K-edge absorption due to ISM using high-resolution X-ray spectra.

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Efrain Gatuzz, T. W. Gorczyca, M. F. Hasoglu, E. Costantini, Javier A. García, Timothy R. Kallman. 2023-10-17. Sulfur X-ray absorption in the local ISM. https://arxiv.org/abs/2310.11498

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