IUE observations of the Seyfert 1.9 galaxy Markarian 423

Details IUE observations of the Seyfert 1.9 galaxy Markarian 423 IUE observations of the Seyfert 1.9 galaxy Markarian 423

Jan 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...288l..29r&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 288, Jan. 15, 1985, p. L29-L32. Research supported

Astronomy and Astrophysics

Astrophysics

12

Seyfert Galaxies, Ultraviolet Spectra, Balmer Series, H Lines, Interstellar Extinction, Interstellar Gas, Iue, Lyman Alpha Radiation, Visible Spectrum

Scientific paper

UV observations of the Seyfert 1.9 galaxy Markarian 423 show a moderately strong UV continuum in the 1200-2000 A region, a strong narrow Lyman-alpha conponent, and no detectable broad lines. This absence of broad UV lines, in conjunction with the steep broad line Balmer decrement, indicates that the gas giving rise to the broad emission lines is significantly reddened. An upper limit on the equivalent width of the broad Lyman-alpha component suggests that the reddening of the broad line region is greater than that of the interstellar continuum, which furnishes evidence of local dust concentration.

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