2003A&A...406..555D


Query : 2003A&A...406..555D

2003A&A...406..555D - Astronomy and Astrophysics, volume 406, 555-563 (2003/8-1)

A hard medium survey with ASCA. IV. The radio-loud type 2 QSO AX J0843+2942.

DELLA CECA R., BRAITO V., BECKMANN V., CACCIANIGA A., CAGNONI I., GIOIA I.M., MACCACARO T., SEVERGNINI P. and WOLTER A.

Abstract (from CDS):

We discuss the X-ray, optical and radio properties of AX J0843+2942, a high luminosity Type 2 AGN found in the ASCA Hard Serendipitous Survey. The X-ray spectrum is best described by an absorbed power-law model with a photon index of Γ=1.72+0.3–0.6 and intrinsic absorbing column density of NH=1.44+0.33–0.52x1023cm–2. The intrinsic luminosity in the 0.5-10keV energy band is ≃3x1045erg/s, well within the range of quasar luminosities. AX J0843+2942, positionally coincident with the core of a triple and strong (S1.4GHz∼1Jy; P1.4GHz∼9x1033erg/s/Hz) radio source, is spectroscopically identified with a Narrow Line object (intrinsic FWHM of all the permitted emission lines ≲1200km/s) at z=0.398, having line features and ratios typical of Seyfert-2 like objects. The high X-ray luminosity, coupled with the high intrinsic absorption, the optical spectral properties and the radio power, allow us to propose AX J0843+2942 as a Radio-Loud ``Type 2 QSO". A discussion of the SED of this object is presented here together with a comparison with the SED of Ultra Luminous Infrared Galaxies, other ``Type 2 QSO" candidates from the literature, and ``normal" Radio-Quiet and Radio-Loud QSOs.

Abstract Copyright:

Journal keyword(s): galaxies: active - quasars: individual: AX J0843+2942 - X-rays: galaxies - X-rays: individual: AX J0843+2942

CDS comments: Table 1 : AX J0843+2942 = AX J0843.2+2942 in Simbad.

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 - 2023
#notes
1 AX J0843.2+2942 X 08 43 13 +29 42.8           ~ 5 0
2 2XMM J084927.7+445458 Sy2 08 49 27.742 +44 54 57.92       20.760   ~ 30 0
3 2MASS J09134545+4056282 Sy2 09 13 45.4951283928 +40 56 28.215343572   19.69 19.21     ~ 247 2
4 HD 84937 Pe* 09 48 56.0992891997 +13 44 39.326709913 8.49 8.68 8.32 7.97 7.70 F8Vm-5 767 0
5 NGC 4945 Sy2 13 05 27.279 -49 28 04.44   9.31 14.40 7.55   ~ 1399 2
6 NGC 6240 Sy2 16 52 58.861 +02 24 03.55   14.31 13.37     ~ 1591 2
7 NAME Cyg A Sy2 19 59 28.35656837 +40 44 02.0972325   16.22 15.10     ~ 2281 2

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2023.02.09-11:17:43

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