1997A&A...327...72R

Query : 1997A&A...327...72R

1997A&A...327...72R - Astronomy and Astrophysics, volume 32772-80 (1997/11-1)

The broad line region of narrow-line Seyfert 1 galaxies.

RODRIGUEZ-PASCUAL P.M., MAS-HESSE J.M. and SANTOS-LLEO M.

Abstract (from CDS):

We have analyzed new and archival IUE observations of narrow-line Seyfert 1 galaxies (NLS1) in order to revise the ultraviolet (UV) properties of this sub-group of Active Galactic Nuclei (AGN). We have found broad wings in the strongest UV emission lines, ruling out the hypothesis that there is no broad line emission region in this type of objects. Since the similarities in spectral energy distributions from the far-infrared (FIR) to the soft X rays in both narrow-line and broad-line Seyfert 1 galaxies do not suggest that the nuclei of NLS1 are hidden from a direct view, we discuss the possibility that the line emitting material in NLS1 is optically thin.

Abstract Copyright: ∼

Journal keyword(s): galaxies: Seyfert - galaxies: nuclei - ultraviolet: galaxies - X-rays: galaxies

Simbad objects: 17

goto View the references in ADS

Number of rows : 17
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 Mrk 957 Sy1 00 41 53.4322147944 +40 21 17.647820820   15.94 15.14     ~ 109 1
2 Mrk 1502 Sy1 00 53 34.9331107632 +12 41 35.929269132   14.41 14.03     ~ 1242 1
3 Z 459-57 Sy1 01 27 32.5217343720 +19 10 43.839069600   14.89 14.22     ~ 333 0
4 MCG-02-07-024 Sy1 02 30 05.5225590096 -08 59 53.207139372   14.74 14.29 13.981 13.585 ~ 332 0
5 NGC 1566 Sy1 04 20 00.3968473248 -54 56 16.624708764 10.29 10.19 9.73 9.21 10.1 ~ 1051 2
6 Z 7-49 Sy1 09 52 19.168 -01 36 44.10   14.99 14.39 11.2   ~ 348 1
7 Z 212-25 Sy1 10 34 38.5982990352 +39 38 28.187042604   17.37 16.90     ~ 402 1
8 Z 243-24 Sy2 11 53 41.7732361680 +46 12 42.174375120   16.24 15.45     ~ 224 0
9 NGC 4051 Sy1 12 03 09.6101337312 +44 31 52.682601288   11.08 12.92 9.94   ~ 2270 1
10 NGC 4253 Sy1 12 18 26.5163572920 +29 48 46.531535472   14.34 13.57     ~ 1106 1
11 IC 3599 Sy1 12 37 41.1939398400 +26 42 27.484266888   15.7 16.5     ~ 191 0
12 LEDA 88835 Sy1 13 25 19.3805530608 -38 24 52.611680340   16.64 13.80 15.33 14.78 ~ 457 0
13 Mrk 478 Sy1 14 42 07.4714418744 +35 26 22.938625500   14.91 14.58     ~ 567 1
14 Z 195-3 Sy1 15 59 09.6231720696 +35 01 47.561352852   15.69 15.06     ~ 346 0
15 LEDA 140659 Sy1 16 54 08.1526473720 +39 25 33.308375772   17.78 17.44     ~ 46 1
16 Z 495-18 Sy1 22 42 39.3363009144 +29 43 31.302092640   14.86 14.16     ~ 748 1
17 NGC 7450 Sy1 23 00 47.8143025368 -12 55 06.530572776   15.19 14.33 13.4 13.3 ~ 139 0

To bookmark this query, right click on this link: simbad:objects in 1997A&A...327...72R and select 'bookmark this link' or equivalent in the popup menu