2004A&A...419L..31W


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.17CEST19:39:17

2004A&A...419L..31W - Astronomy and Astrophysics, volume 419, L31-34 (2004/6-1)

HE 0047-1756: A new gravitationally lensed double QSO.

WISOTZKI L., SCHECHTER P.L., CHEN H.-W., RICHSTONE D., JAHNKE K., SANCHEZ S.F. and REIMERS D.

Abstract (from CDS):

The quasar HE 0047-1756, at z=1.67, is found to be split into two images 1.44" apart by an intervening galaxy acting as a gravitational lens. The flux ratio for the two components is roughly 3.5:1, depending slightly upon wavelength. The lensing galaxy is seen on images obtained in the i (800nm) and Ks bands (2.1µm); there is also a nearby faint object which may be responsible for some shear. The spectra of the two quasar images are nearly identical, but the emission line ratio between the two components scale differently from the continuum. Moreover, the fainter component has a bluer continuum slope than the brighter one. We argue that these small differences are probably due to microlensing. There is evidence for a partial Einstein ring emanating from the brighter image toward the fainter one.

Abstract Copyright:

Journal keyword(s): quasars: individual: HE 0047-1756 - quasars: general - gravitational lensing

Nomenclature: Text: [WSC2004] HE 0047-1756 N=1. Table 1: [WSC2004] HE 0047-1756 A (Nos A-B, G).

Simbad objects: 6

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Number of rows : 6

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 [VV2006] J005027.8-174009 QSO 00 50 27.8233602592 -17 40 09.171002680           ~ 42 1
2 [WSC2004] HE 0047-1756 G G 00 50 27.83 -17 40 11.2           ~ 9 1
3 [WSC2004] HE 0047-1756 gLS 00 50 27.83 -17 40 11.2           ~ 5 0
4 [WSC2004] HE 0047-1756 A LeI 00 50 27.83 -17 40 08.8           ~ 14 0
5 [WSC2004] HE 0047-1756 B LeI 00 50 27.85 -17 40 10.2           ~ 14 0
6 QSO B1104-181 QSO 11 06 33.39 -18 21 23.8   15.8 15.9 15.7   ~ 308 1

    Equat.    Gal    SGal    Ecl

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2021.04.17-19:39:17

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