Broad emission line profiles in Seyfert-1 galaxies. I. Evidence for a disk and a wind in Mkn 335
1987 (English)In: Astronomy and Astrophysics, ISSN 0004-6361, E-ISSN 1432-0746, Vol. 186, no 1-2, 103-113113 p.Article in journal (Refereed) Published
High resolution spectroscopic observations of the Seyfert-1 galaxy Mkn 335 are presented. This galaxy is exceptional in the sense that its broad emission lines display a strong blue asymmetry. It is shown that the Halpha/Hbeta intensity ratio changes drastically with velocity shift. It is also found that the Hdelta/Hbeta ratio varies only by a small amount from line core to the wings, and is close to the theoretical case B recombination value. It is proposed that these Balmer line ratios are produced by a medium with very high densities and a temperature of about 10 4 K. These observations are interpreted by a model with two dynamically and spatially separate components: a disk which contains the very high density material and emits ~80% of the Balmer lines in a symmetric profile and an outflowing component of much lower density which emits the blue wing and most of Ly alpha and the higher excitation lines (such as C IV lambda1549)
Place, publisher, year, edition, pages
1987. Vol. 186, no 1-2, 103-113113 p.
Experimental/ accretion disks, astronomical spectra, galactic nuclei, Markarian galaxies, Seyfert galaxies, spectral line breadth, visible astronomical observations/ broad emission line profiles, active galactic nucleus, visible, nuclear accretion disk, galactic wind, high-density disk, case-B recombination emission, low-density wind, radial velocity, disk temperature, near-UV, Mkn 335, Seyfert-1 galaxy, strong blue asymmetry, Halpha/Hbeta intensity ratio, velocity shift, Hdelta/Hbeta ratio, Balmer line ratios, spatially separate components, very high density material, Balmer lines, symmetric profile, outflowing component, blue wing, Ly alpha, higher excitation lines, C IV lambda1549, 10 kK, 351.0 to 734.0 nm/ A9580J Photographic region astronomical observations A9850E Galactic structure, content and morphology A9850R Active and peculiar galaxies/ temperature 1.0E+04 K, wavelength 3.51E-07 to 7.34E-07 m
Astronomy, Astrophysics and Cosmology
IdentifiersURN: urn:nbn:se:uu:diva-197182ISI: 3068644OAI: oai:DiVA.org:uu-197182DiVA: diva2:611967