2015MNRAS.448.2879A

Query : 2015MNRAS.448.2879A

2015MNRAS.448.2879A - Mon. Not. R. Astron. Soc., 448, 2879-2889 (2015/April-2)

Spectropolarimetric monitoring of active galaxy 3C 390.3 with 6-m telescope SAO RAS in the period 2009-2014.

AFANASIEV V.L., SHAPOVALOVA A.I., POPOVIC L.C. and BORISOV N.V.

Abstract (from CDS):

Here we present the spectropolarimetric observations of the radio-loud active galaxy 3C 390.3 in the period 2009-2014 (24 epochs). The galaxy has been observed with the 6-m telescope of Special Astrophysical Observatory of the Russian Academy of Science (SAO RAS) using the Spectral Camera with Optical Reducer for Photometric and Interferometric Observations (SCORPIO) spectropolarimeter. We explore the variability and lags in the polarized light of the continuum and broad Hα line. We give the Stokes parameters Q,U, degree of linear polarization P and the position angle of the polarization plane, φ, for 24 epochs.

We find a small lag (10-40 d) between the unpolarized and polarized continuum that is significantly smaller than the estimated lags for the unpolarized broad emission lines (lag(Hα) ∼ 138-186 and lag(Hβ) ∼ 60-79 d). This shows that the region of the variable polarized continuum is significantly smaller than the broad line region, indicating that a part of the polarized continuum is coming from the jet. The lag of the polarized light in the Hα line (89-156 d) indicates an additional component to the disc one that has an outflowing velocity of ∼ - 1200 km/s. This region seems to depolarize the polarized broad Hα line emitted from the disc and scattered in the inner part of the torus.


Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): line: profiles - galaxies: active - quasars: individual: 3C 390.3

VizieR on-line data: <Available at CDS (J/MNRAS/448/2879): table2.dat>

Simbad objects: 4

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Number of rows : 4
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 IC 450 Sy1 06 52 12.3346265592 +74 25 37.121227716   15.16 14.19     ~ 571 1
2 NGC 4151 Sy1 12 10 32.5759813872 +39 24 21.063527532   12.18 11.48     ~ 3688 2
3 ICRF J184208.9+794617 Sy1 18 42 08.9904975672 +79 46 17.127835104   16.06 15.38     ~ 1316 0
4 2C 1590 BLL 18 45 37.6 +09 53 45           ~ 79 1

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