2006AJ....131.1231B


Query : 2006AJ....131.1231B

2006AJ....131.1231B - Astron. J., 131, 1231-1235 (2006/March-0)

PKS 2149-306 and CXOCDFS J033225.3-274219: two AGNs with unusual spectra possibly blueshifted?

BASU D.

Abstract (from CDS):

PKS 2149-306 and CXOCDFS J033225.3-274219 each exhibit several emission lines in their optical spectra from which their redshifts have been determined. However, an ASCA spectrum of the first object has detected an emission line at 5 keV observed wavelength, and the Chandra ACIS-I spectrum of the second object shows a very strong emission feature at the observed wavelength of 6.2 keV. The two lines cannot be identified with any known search line on the basis of their redshift values without invoking extremely large outflow bulk velocities of 0.6c-0.75c. Such high bulk velocities are practically unheard of in any other observations of extragalactic objects. We show here that all the lines in both the optical and X-ray spectra of the two objects can be identified with lines at longer wavelengths that are blueshifted. We propose a scenario in which the spectrum is blueshifted due to net apparent motion toward the observer, resulting from an ejection.

Abstract Copyright: ∼

Journal keyword(s): Cosmology: Miscellaneous - Galaxies: Active - Galaxies: Quasars: Emission Lines - quasars: individual (PKS 2149-306) - quasars: individual (CXOCDFS J033225.3-274219) - X-Rays: Galaxies

Simbad objects: 8

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Number of rows : 8
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026
#notes
1 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 3588 2
2 ACS-GC 90045613 Sy2 03 32 13.257 -27 42 40.65   21.6424 20.820 20.164 19.8240 ~ 87 0
3 [PBM2009] s124624 Sy1 03 32 25.21 -27 42 18.8   24.7725 23.75 23.21 22.6063 ~ 92 0
4 ACS-GC 90043479 rG 03 32 36.70 -27 44 06.1   22.732 23.6511 22.6377 20.548 ~ 72 0
5 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 6156 6
6 NGC 6240 Sy2 16 52 58.9 +02 24 03   14.31 13.37     ~ 1734 2
7 V* V1408 Aql LXB 19 59 24.0074252040 +11 42 29.859773292 18.40 18.97 18.95 18.70 18.66 ~ 234 0
8 QSO B2149-306 Bla 21 51 55.52396937 -30 27 53.6980880   17.95 18.0 17.48   ~ 281 1

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