On the origin of double-peaked emission lines in active galactic nuclei
نویسندگان
چکیده
منابع مشابه
Long-term Profile Variability of Double Peaked Emission Lines in Active Galactic Nuclei
We present up to two decades of spectroscopic monitoring of the double-peaked broad Hα emission lines of seven broad-line radio galaxies. These extremely broad, double-peaked lines are successfully modeled by emission from gas in the outer accretion disk, and their profiles vary on timescales of months to years. This variability is a valuable probe for understanding the structure and dynamics o...
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Using the stellar population synthesis, we model the stellar contribution for a sample of 110 doublepeaked broad-lines AGNs from the Sloan Digital Sky Survey (SDSS). The stellar velocity dispersions (σ∗) are obtained for 52 double-peaked AGNs with obvious stellar absorption features, ranging from 106 to 284 km s . We also use multi-component profiles to fit [O III]λλ4959, 5007 and Hβ emission l...
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Double-peaked [O III] profiles in active galactic nuclei (AGNs) may provide evidence for the existence of dual AGNs, but a good diagnostic for selecting them is currently lacking. Starting from ∼ 7000 active galaxies in SDSS DR7, we assemble a sample of 87 type 2 AGNs with double-peaked [O III] profiles. The nuclear obscuration in the type 2 AGNs allows us to determine redshifts of host galaxie...
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We study the disk emission component hidden in the single-peaked Broad Emission Lines (BELs) of Active Galactic Nuclei (AGN). We compare the observed broad lines from a sample of 90 Seyfert 1 spectra taken from the Sloan Digital Sky Survey with simulated line profiles. We consider a two-component Broad Line Region (BLR) model where an accretion disk and a surrounding non-disk region with isotro...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1996
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/278.2.l35