1998A&A...330...67B


Query : 1998A&A...330...67B

1998A&A...330...67B - Astronomy and Astrophysics, volume 330, 67-71 (1998/2-1)

X-ray and optical study of the giant radio quasar 4C +74.26.

BRINKMANN W., OTANI C., WAGNER S.J. and SIEBERT J.

Abstract (from CDS):

We present the optical and X-ray study of the radio-loud quasar C. The ASCA spectrum is rather complex with indications of a reflection component, a neutral iron line and a warm absorber. The underlying power law has a photon index of {GAMMA}=2.03 ±0.09. The soft X-ray flux in 1996 is nearly twice as high as that found in a ROSAT observation in 1993 without apparent spectral changes. The X-ray data support the picture deduced from previous radio observations that C is seen under a relative large angle (∼45°) with respect to its jet axis. However, the rather unusual X-ray spectral properties might as well be a signature of the quasar's young evolutionary status. No interaction between the quasar and the nearby ∼19 mag galaxy could be found in the optical images.

Abstract Copyright:

Journal keyword(s): galaxies: active - quasars: general - quasars: individual: 4C+74.26 - X-rays: general

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 ESO 383-35 Sy1 13 35 53.7691256160 -34 17 44.160716796   13.89 13.61 8.9   ~ 1483 0
2 ICRF J172320.7+341757 Sy1 17 23 20.7958610952 +34 17 57.967381860   15.58 15.46     ~ 308 1
3 RX J2042.5+7505 X 20 42 36.2 +75 04 15           ~ 2 0
4 ICRF J204237.3+750802 Sy1 20 42 37.3079247456 +75 08 02.445851940     14.46 13.80   ~ 257 0

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