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Interstellar X-Ray Absorption Spectroscopy of Oxygen, Neon, and Iron with the Chandra LETGS Spectrum of X0614+091

Savin, Daniel Wolf; Kahn, S. M.; Paerels, Frederik B.; Brinkman, A. C.; Van der Meer, R. L. J; Kaastra, J. S.; Kuulkers, E.; Den Boggende, A. J. F.; Predehl, P.; Drake, Jeremy J.; Mclaughlin, Brendan M.

We find resolved interstellar O K, Ne K, and Fe L absorption spectra in the Chandra X-Ray Observatory Low-Energy Transmission Grating Spectrometer (LETGS) spectrum of the low-mass X-ray binary X0614+091. We measure the column densities in O and Ne and find direct spectroscopic constraints on the chemical state of the interstellar O. These measurements probably probe a low-density line of sight through the Galaxy, and we discuss the results in the context of our knowledge of the properties of interstellar matter in regions between the spiral arms.


Also Published In

The Astrophysical Journal

More About This Work

Academic Units
Astronomy and Astrophysics
Published Here
March 25, 2013