Interstellar X-ray absorption spectroscopy of oxygen, neon, and iron with the Chandra LETGS spectrum of X0614+091

Authors
Paerels, F Brinkman, AC van der Meer, RLJ Kaastra, JS Kuulkers, E den Boggende, AJF Predehl, P Drake, JJ Kahn, SM Savin, DW McLaughlin, BM
Citation
F. Paerels et al., Interstellar X-ray absorption spectroscopy of oxygen, neon, and iron with the Chandra LETGS spectrum of X0614+091, ASTROPHYS J, 546(1), 2001, pp. 338-344
Citations number
30
Categorie Soggetti
Space Sciences
Journal title
ASTROPHYSICAL JOURNAL
ISSN journal
0004637X → ACNP
Volume
546
Issue
1
Year of publication
2001
Part
1
Pages
338 - 344
Database
ISI
SICI code
0004-637X(20010101)546:1<338:IXASOO>2.0.ZU;2-Q
Abstract
We find resolved interstellar O K, Ne K, and Fe L absorption spectra in the Chandra X-Ray Observatory Low-Energy Transmission Grating Spectrometer (LE TGS) 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 che mical 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 regio ns between the spiral arms.