Interstellar titanium abundances toward 19 high-latitude stars

Details Interstellar titanium abundances toward 19 high-latitude stars Interstellar titanium abundances toward 19 high-latitude stars

May 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...256l...9a&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 256, May 1, 1982, p. L9-L12.

Astronomy and Astrophysics

Astrophysics

10

Abundance, Interstellar Matter, Titanium, Absorption Spectra, Ionization Potentials, Line Spectra, Milky Way Galaxy

Scientific paper

The 3384 absorption line of interstellar Ti II has been observed at high resolution along lines of sight toward nine nearly aligned pairs of foreground disk and background halo stars, the latter having z-distance greater than 500 pc. The primary result is the great strength of Ti II absorption perpendicular to the plane of the Galaxy. Compared with the well-studied disk abundances, there is apparently a vertical gradient of titanium depletion above the galactic plane. The gaseous titanium abundance relative to hydrogen increases with z-distance and with LSR velocity by factors exceeding 20 and can reach nearly solar proportions.

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