Broad emission lines in active galactic nuclei. I - an atlas of H-alpha and H-beta profiles

Details Broad emission lines in active galactic nuclei. I - an atlas of H-alpha and H-beta profiles Broad emission lines in active galactic nuclei. I - an atlas of H-alpha and H-beta profiles

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26as...85.1049s&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 85, no. 3, Nov. 1990, p. 1049-1068. Research supported by AS

Astronomy and Astrophysics

Astrophysics

67

Active Galactic Nuclei, Emission Spectra, H Alpha Line, H Beta Line, Seyfert Galaxies, Balmer Series, Luminosity, Markarian Galaxies, Red Shift, Spectral Line Width, Ultraviolet Spectra

Scientific paper

High quality H-alpha and H-beta spectra of a sample of 29 Seyfert 1 galaxies and low redshift QSOs are presented. The typical resolution is about 3 A and the signal-to-noise in the continuum exceeds 50:1 in most H-alpha spectra. The sample extends over a range of nine magnitudes in absolute luminosity. The broad line profiles have been isolated by subtracting the continuum and blending lines, including the narrow components of H-alpha and H-beta, and the H-beta/H-alpha ratios as function of velocity are derived and included in the atlas.

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