2008A&A...490..103S


C.D.S. - SIMBAD4 rel 1.7 - 2020.04.09CEST22:12:48

2008A&A...490..103S - Astronomy and Astrophysics, volume 490, 103-112 (2008/10-4)

Exploring the nuclear environment of the NLS1 galaxy Arakelian 564 with XMM-Newton RGS.

SMITH R.A.N., PAGE M.J. and BRANDUARDI-RAYMONT G.

Abstract (from CDS):

We present an accurate characterisation of the high-resolution X-ray spectrum of the Narrow Line Seyfert 1 galaxy Arakelian 564 and put it in to context with other objects of its type by making a detailed comparison of their spectra. The data are taken from 5 observations with the XMM-Newton Reflection Grating Spectrometer and fitted with various spectral models. The best fit to the data identifies five significant emission lines at 18.9, 22.1, 24.7, 29.0 and 33.5Å due to OVIII Lyα, OVII(f), NVII Lyα, NVI(i) and CVI Lyα respectively. These have an RMS velocity of ∼1100km/s and a flow velocity of ~-600km/s, except for the OVII(f) emission line, which has a flow velocity consistent with zero. Two separate emitting regions are identified. Three separate phases of photoionized, X-ray absorbing gas are included in the fit with ionization parameters logξ=-0.86, 0.87, 2.56 and column densities NH=0.89, 2.41, 6.03x1020cm–2 respectively. All three phases show this to be an unusually low velocity outflow (-10±100km/s) for a narrow line Seyfert 1. We present the hypothesis that the BLR is the source of the NLR and warm absorber, and examine optical and UV images from the XMM-Newton Optical Monitor to relate our findings to the characteristics of the host galaxy.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: Seyfert - galaxies: individual: Ark 564 - X-rays: galaxies - techniques: spectroscopic - line: identification

Status at CDS:  

Simbad objects: 7

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Number of rows : 7

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 Mrk 1502 Sy1 00 53 34.9326560879 +12 41 35.927159668   14.41 14.03     ~ 1027 1
2 Ton S 180 Sy1 00 57 20.2038086128 -22 22 56.577563819   14.60 14.34 15.23   ~ 268 0
3 Mrk 359 Sy1 01 27 32.5219447154 +19 10 43.837247537   14.89 14.22     ~ 271 0
4 NGC 4051 Sy1 12 03 09.6098828919 +44 31 52.693714606   11.08 12.92 9.94   ~ 1973 1
5 NGC 4253 Sy1 12 18 26.5155239433 +29 48 46.518670434   14.34 13.57     ~ 926 1
6 ESO 383-35 Sy1 13 35 53.7686909139 -34 17 44.139127597   13.89 13.61 8.9   ~ 1372 0
7 UGC 12163 Sy1 22 42 39.3364258078 +29 43 31.301194419   14.86 14.16     ~ 610 1

    Equat.    Gal    SGal    Ecl

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2020.04.09-22:12:48

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