1998A&A...335..443S


Query : 1998A&A...335..443S

1998A&A...335..443S - Astronomy and Astrophysics, volume 335, 443-448 (1998/7-2)

Multiwavelength observations of 26W20, a radio galaxy which displays BL Lacertae characteristics.

SILVERMAN J.D., HARRIS D.E. and JUNOR W.

Abstract (from CDS):

object{26W20}, a radio galaxy located at a projected distance of 2.2Mpc from the center of Abell 754 (z=0.054) exhibits core emission properties similar to those of a BL Lac object. New radio observations and VLA archival data show parsec scale features in the core (Lr∼1041erg/s) with a flat spectrum. From observations with ROSAT, we demonstrate that the X-ray core emission (Lx=3x1043erg/s) is non-thermal and variable. An 18% increase in the X-ray luminosity was observed in two observations separated by five days. The optical morphology is that of a large, normal elliptical galaxy (mv=15.6) and the optical spectrum lacks strong emission lines. If the innermost segment of the radio jet is close to our line of sight, Doppler boosting could explain both the observed X-ray intensity and the absence of emitting line regions.

Abstract Copyright:

Journal keyword(s): radio continuum: galaxies - X-rays: galaxies - BL Lacertae objects: individual: 26W20 - galaxies: jets

CDS comments: Galaxy J2310-43 = 2E 4689

Simbad objects: 5

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Number of rows : 5
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 2E 0905.6-0947 rG 09 08.0 -10 00           ~ 11 0
2 ACO 754 ClG 09 09 08.4 -09 39 58           ~ 666 1
3 NGC 3862 Sy2 11 45 05.00904503 +19 36 22.7409909   14.98 13.97     ~ 601 3
4 QSO J2310-4347 BLL 23 10 41.7557971776 -43 47 34.234685556   15.96 16.00 15.26   ~ 28 0
5 MCG-07-47-031 BLL 23 19 05.8954756632 -42 06 48.297034584   16.60 15.46     ~ 111 1

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