Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...197.0704f&link_type=abstract
American Astronomical Society, 197th AAS Meeting, #07.04; Bulletin of the American Astronomical Society, Vol. 32, p.1401
Astronomy and Astrophysics
Astronomy
Scientific paper
We present absorption line data for the sightline toward HD218915, an O9.5Iab star at l=108° , b=-6.89° , & d=2.1 kpc that probes material approximately 300 pc away from the mid-plane of the Perseus spiral arm. The E140H STIS data (at 3.5 km s-1 resolution) shows distinct absorption due to S 3, Cl 1, P 2, Mg 2, Mn 2, Ga 2, Ge 2, Cu 2, & Ni 2 at -50 km s-1 resulting from Perseus Arm gas. Data from FUSE add information about Fe 2, Si 2, & Ar 1, allowing us to determine gas and dust phase abundances for wide range of depleted species. Also present along this sightline are two low column density intermediate velocity components at -70 and +42 km s-1, seen in the strongest metal lines. We look for evidence of grain processing by energetic events in the Perseus arm and compare the results with previous determinations of warm and halo cloud depletion patterns. This work is based on data obtained for the Guaranteed Time Team by the NASA-CNES-CSA FUSE mission operated by the Johns Hopkins University. Financial support has been provided by NASA contract NAS5-32985 and STScI Grant GO 07270.02.
Fabian Dirk
Savage Blair. D.
Sembach Kenneth Russell
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