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Title:
The Hubble Space Telescope quasar absorption line key project. III - First observational results on Milky Way gas
Authors:
Savage, Blair D.; Lu, Limin; Bahcall, John N.; Bergeron, Jacqueline; Boksenberg, Alec; Hartig, George F.; Jannuzi, Buell T.; Kirhakos, Sofia; Lockman, Felix J.; Sargent, W. L. W.; Schneider, Donald P.; Turnshek, David; Weymann, Ray J.; Wolfe, Arthur M.
Affiliation:
AA(Wisconsin Univ., Madison), AB(Wisconsin Univ., Madison), AC(Inst. for Advanced Study, Princeton, NJ), AD(CNRS, Inst. d'Astrophysique, Paris, France), AE(Royal Greenwich Observatory, Cambridge, United Kingdom), AF(Space Telescope Science Inst., Baltimore, MD), AG(Inst. for Advanced Study, Princeton, NJ), AH(Inst. for Advanced Study, Princeton, NJ), AI(National Radio Astronomy Observatory, Charlottesville, VA), AJ(California Inst. of Technology, Pasadena)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 413, no. 1, p. 116-136. (ApJ Homepage)
Publication Date:
08/1993
Category:
Astronomy
Origin:
STI
NASA/STI Keywords:
Hubble Space Telescope, Interstellar Matter, Line Spectra, Milky Way Galaxy, Quasars, Absorption Spectra, Ultraviolet Astronomy
DOI:
10.1086/172982
Bibliographic Code:
1993ApJ...413..116S

Abstract

Absorption lines found near zero redshift due to Milky Way disk and halo gas in the spectra of 15 quasars observed with the Faint Object Spectrograph (FOS) of the HST at a resolution of about 230 km/s are reported. Results show that Milky Way absorption lines comprise about 44 percent of all absorption lines seen in the first group of Key Project FOS spectra. Milky Way lines were observed for 3C 273 and H1821 + 643. Limits to the Mg-to-H abundance ratio obtained for very high velocity Mg II absorption detections imply gas-phase Mg abundances for the very high velocity gas ranging from more than 0.059 to more than 0.32 times the solar abundance. In all cases where high-velocity H I emission is seen, corresponding high-velocity metal-line absorption is observed.

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Part  3     Part  1     Part  2     Part  4     Part 11     Part  6     Part  8     Part 10     Part  5     Part 12     Part  7     Part 13     Part 15     Part 14     Part 16    

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