J/ApJS/93/211       IUE survey of H I Lyalpha absorption. I. (Diplas+ 1994)
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	table1 table2
Query from: http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=J/ApJS/93/211

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Beginning of ReadMe : J/ApJS/93/211 IUE survey of H I Lyalpha absorption. I. (Diplas+ 1994) ================================================================================ An IUE survey of interstellar H I Lyalpha absorption. I. Column densities. Diplas A., Savage B.D. <Astrophys. J. Suppl. Ser. 93, 211 (1994)> =1994ApJS...93..211D (SIMBAD/NED BibCode) ================================================================================ ADC_Keywords: Photometry, UBV ; Redshifts ; H I data ; Ultraviolet Mission_Name: IUE Keywords: ISM: abundances - stars: early-type - ultraviolet: ISM Abstract: We measure Galactic interstellar neutral hydrogen column densities by analyzing archival interstellar Lyalpha absorption line data toward 554 B2 and hotter stars observed at high resolution with the IUE satellite. This study more than doubles the number of lines of sight with measures of N(H I) based on Lyalpha. We have included the scattered light background correction algorithm of Bianchi and Bohlin (1984A&A...134...31B) in our data reduction. We use the correlation between the Balmer discontinuity [c_1_] index and the stellar Lyalpha absorption in order to assess the effects of stellar Ly alpha contamination. Approximately 40% of the B stars with measured [c_1_] index, exhibit serious stellar Lyalpha contamination. Table 1 contains the derived values of the interstellar N(H I) for 393 stars with at most small amounts of stellar contamination. Table 2 lists the observed values of total N(H I) for 161 stars with suspected stellar Ly alpha contamination and/or uncertain stellar parameters.