2004A&A...423..909P


Query : 2004A&A...423..909P

2004A&A...423..909P - Astronomy and Astrophysics, volume 423, 909-918 (2004/9-1)

Contribution of the disk emission to the broad emission lines in AGNs: Two-component model.

POPOVIC L.C., MEDIAVILLA E., BON E. and ILIC D.

Abstract (from CDS):

We present an investigation of the structure of the emission line region in a sample of 12 single-peaked Active Galactic Nuclei (AGNs). Using the high resolution Hβ and Hα line profiles observed with the Isaac Newton Telescope (La Palma) we study the substructure in the lines (such as shoulders or bumps) which can indicate a disk or disk-like emission in Broad Line Regions (BLRs). Applying Gaussian analysis we found that both kinds of emission regions, BLR and NLR, are complex. In this sample the narrow [OIII] lines are composites of two components; NLR1 which have random velocities from ∼200 to 500km/s and systematic velocities toward the blue from 20 to 350km/s, and NLR2 with smaller random velocities (∼100-200km/s) and a redshift corresponding to the cosmological one. The BLR also have complex structure and we apply a two-component model assuming that the line wings originate in a very broad line region (VBLR) and the line core in an intermediate line region (ILR). The VBLR is assumed to be an accretion disk and the ILR a spherical emission region. The model fits very well the Hα and Hβ line profiles of the AGNs.

Abstract Copyright:

Journal keyword(s): galaxies: Seyfert - line: profiles - accretion, accretion disks

Simbad objects: 12

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Number of rows : 12
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 NGC 931 Sy1 02 28 14.4689104272 +31 18 41.469363324   15.71 14.74     ~ 374 0
2 Mrk 1506 Sy1 04 33 11.0956735296 +05 21 15.619461552   15.72 15.05 10.08   ~ 1917 2
3 Mrk 110 Sy1 09 25 12.8479065576 +52 17 10.386311208   16.82 16.41     ~ 545 0
4 Mrk 141 Sy1 10 19 12.5653238136 +63 58 02.626090176   16.32 16.00     ~ 140 0
5 NGC 3227 GiP 10 23 30.5765149296 +19 51 54.282206700   12.61 11.79     ~ 1614 1
6 Ton 1388 Sy1 11 19 08.6786220240 +21 19 17.987085948   14.91 14.80     ~ 437 0
7 PB 3894 Sy1 12 14 17.6738687784 +14 03 13.182723144   14.46 14.19     ~ 773 0
8 NGC 4253 Sy1 12 18 26.5163572920 +29 48 46.531535472   14.34 13.57     ~ 984 1
9 3C 273 BLL 12 29 06.6998257176 +02 03 08.597629980   13.05 14.830 14.11   ~ 5559 1
10 Mrk 817 Sy1 14 36 22.0820611632 +58 47 39.394934844   14.19 13.79     ~ 459 0
11 Mrk 841 Sy1 15 04 01.1935384104 +10 26 15.780409692   14.50 14.27     ~ 611 0
12 Mrk 493 Sy1 15 59 09.6231720696 +35 01 47.561352852   15.69 15.06     ~ 291 0

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2022.05.25-21:25:39

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