Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994mnras.267..660w&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Vol. 267, NO. 3/APR1, P. 660, 1994
Astronomy and Astrophysics
Astronomy
9
Ism: Structure - Globular Clusters: Individual: Ω Cen - Galaxy: Structure
Scientific paper
Interstellar Na D and K I line spectra are reported for three stars which lie within 5° of the ω Cen cluster. These new data have enabled us to complete the identification of the absorption components which are observed in the gas foreground to this cluster. in particular, we discuss a component at velocity νlsr≍-15 km s-1 which is produced by gas beyond ≍1 kpc and at a distance ≳ 175 pc above the Galactic plane. We suggest that this feature originates in the gas of the Carina spiral arm. Weaker components having negative peculiar velocities appear to lie beyond the bulk of the -15 km s-1 gas. A comparison of these new observations with similar studies made towards M4 and M22 provides a further indication of the complex structure of the gas over part of the Carina-Sagittarius arm region.
Bates Brandon
Wood D. K.
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