Far-ultraviolet Observations of the North Ecliptic Pole with SPEAR

Details Far-ultraviolet Observations of the North Ecliptic Pole with SPEAR Far-ultraviolet Observations of the North Ecliptic Pole with SPEAR

2006-01-26

arxiv.org/abs/astro-ph/0601583v1

Astronomy and Astrophysics

Astrophysics

5 pages, 3 figures, Accepted for publication in ApJ Letters

Scientific paper

10.1086/505195

We present SPEAR/FIMS far-ultraviolet observations near the North Ecliptic Pole. This area, at b~30 degrees and with intermediate HI column, seems to be a fairly typical line of sight that is representative of general processes in the diffuse ISM. We detect a surprising number of emission lines of many elements at various ionization states representing gas phases from the warm neutral medium (WNM) to the hot ionized medium (HIM). We also detect fluorescence bands of H2, which may be due to the ubiquitous diffuse H2 previously observed in absorption.

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