Nitrogen X-ray absorption in the local ISM

被引：9

作者：

Gatuzz, Efrain ^{[1
]}

Garcia, Javier A. ^{[2
,3
,4
]}

Kallman, Timothy R. ^{[5
]}

机构：

[1] Max Planck Inst Extraterr Phys, Giessenbachstr 1, D-85748 Garching, Germany

[2] CALTECH, Cahill Ctr Astron & Astrophys, Pasadena, CA 91125 USA

[3] Dr Karl Remeis Observ, Sternwartstr 7, D-96049 Bamberg, Germany

[4] Erlangen Ctr Astroparticle Phys, Sternwartstr 7, D-96049 Bamberg, Germany

[5] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2021年 / 504卷 / 03期

关键词：

ISM: abundances; ISM: atoms; ISM: structure; Galaxy: structure; X-rays: ISM; K-SHELL PHOTOABSORPTION; INTERSTELLAR-MEDIUM; MILKY-WAY; OXYGEN; SPECTROSCOPY; DIFFUSE; GAS; PHOTOIONIZATION; MAGNESIUM; BURSTS;

D O I：

10.1093/mnras/stab1185

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Nitrogen is one of the most abundant metals in the interstellar medium (ISM), and thus it constitutes an excellent test to study a variety of astrophysical environments, ranging from nova to active galactic nuclei. We present a detailed analysis of the gaseous component of the N K-edge using high-resolution XMM-Newton spectra of 12 Galactic and 40 extragalactic sources. For each source, we have estimated column densities for N I, N II, N III, N V, N VI, and N VII ionic species, which trace the cold, warm, and hot phases of the local Galactic ISM. We have found that the cold-warm component column densities decrease with the Galactic latitude, while the hot component does not. Moreover, the cold column density distribution is in good agreement with UV measurements. This is the first detailed analysis of the nitrogen K-edge absorption due to ISM using high-resolution X-ray spectra.

引用

页码：4460 / 4471

页数：12

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