2001MNRAS.326.1007A


C.D.S. - SIMBAD4 rel 1.7 - 2021.06.19CEST00:56:54

2001MNRAS.326.1007A - Mon. Not. R. Astron. Soc., 326, 1007-1014 (2001/September-3)

B2114+022: a distant radio source gravitationally lensed by a starburst galaxy.

AUGUSTO P., BROWNE I.W.A., WILKINSON P.N., JACKSON N.J., FASSNACHT C.D., MUXLOW T.W.B., HJORTH J., JAUNSEN A.O., KOOPMANS L.V., PATNAIK A.R. and TAYLOR G.B.

Abstract (from CDS):

We have discovered a radio source (B2114+022) with a unique structure during the course of the JVAS gravitational lens survey. VLA, MERLIN, VLBA and MERLIN+EVN radio maps reveal four compact components, in a configuration unlike that of any known lens system, or, for that matter, any of the ∼15000 radio sources in the JVAS and CLASS surveys. Three of the components are within 0.3arcsec of each other while the fourth is separated from the group by 2.4arcsec. The widest separation pair of components have similar radio structures and spectra. The other pair also have similar properties. This latter pair have spectra which peak at ∼5GHz. Their surface brightnesses are much lower than expected for synchrotron self-absorbed components.

Ground-based and Hubble Space Telescope optical observations show two galaxies (z=0.3157 and 0.5883) separated by 1.25arcsec. The lower redshift galaxy has a post-starburst spectrum and lies close to, but not coincident with, the compact group of three radio components. No optical or infrared emission is detected from any of the radio components down to I=25 and H=23. We argue that the most likely explanation of the B2114+022 system is that the post-starburst galaxy, assisted by the second galaxy, lenses a distant radio source producing the two wide-separation images. The other two radio components are then associated with the post-starburst galaxy. The combination of the angular sizes of these components, their radio spectra and their location with respect to their host galaxy still remains puzzling.


Abstract Copyright: The Royal Astronomical Society

Journal keyword(s): gravitational lensing - galaxies: individual: B2114+022 - galaxies: starburst

Nomenclature: Table 4, Figs1,2: [ABW2001] B2114+022 A (Nos A-D), [ABW2001] GN (Nos G1-G2).

Simbad objects: 17

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Number of rows : 17

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 QSO B0218+357 QSO 02 21 05.5 +35 56 14   20.0 20.0 19.60   ~ 515 2
2 4C 05.19 QSO 04 14 37.7673624 +05 34 42.328449   24.100 23.800 21.270   ~ 338 2
3 M 82 IG 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5464 6
4 QSO B1030+074 QSO 10 33 34.02429 +07 11 26.1478     20.34 20.22   ~ 101 1
5 QSO B1422+2309 BLL 14 24 38.09400 +22 56 00.5900   16.77 15.84 14.79   ~ 425 1
6 [PBW92] 1422+231 gLS 14 24 38.09400 +22 56 00.5900   16.77 15.84 14.79   ~ 355 0
7 IC 4553 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 2755 4
8 QSO B1600+4344 QSO 16 01 40.4818 +43 16 47.394   22.12 21.92     ~ 178 1
9 CLASS B1933+503 Rad 19 34 31.02 +50 25 23.5           ~ 83 1
10 [ABW2001] B2114+022 A LeI 21 16 50.744 +02 25 46.26           ~ 2 0
11 PKS J2116+0225 Rad 21 16 50.7449472 +02 25 46.270365           ~ 56 2
12 [ABW2001] B2114+022 B LeI 21 16 50.756 +02 25 46.59           ~ 2 0
13 [ABW2001] B2114+022 C LeI 21 16 50.769 +02 25 46.31           ~ 2 0
14 [ABW2001] G2 G 21 16 50.79 +02 25 47.0           ~ 7 1
15 [ABW2001] G1 G 21 16 50.79 +02 25 47.0         18.2 ~ 8 1
16 [ABW2001] B2114+022 D LeI 21 16 50.896 +02 25 47.42           ~ 2 0
17 BD+28 4211 HS* 21 51 11.0220905905 +28 51 50.366090892 8.922 10.25 10.58 10.656 10.831 sdO2VIIIHe5 751 0

    Equat.    Gal    SGal    Ecl

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2021.06.19-00:56:54

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