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Mapping The Extinction In Dusty Lenses: Optical And IR Imaging Of MG J0414+0534

Published online by Cambridge University Press:  25 May 2016

C. Vanderriest ,
M.-C. Angonin-Willaime  and
F. Rigau
C. Vanderriest
Affiliation:
CFHT Corp., P.O. Box 1597, Kamuela 96743, Hawaii, USA
M.-C. Angonin-Willaime
Affiliation:
Paris-Meudon Observatory, 92195 Meudon Cedex, France

Extract

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The source of the gravitational mirage MG J0414+0534, found in a radio survey (Hewitt et al. 1992), is an extremely reddened quasar at z ≃ 2.63 (Lawrence et al. 1995) but the redshift of its lensing galaxy is still unknown (≃ 0.8 ?). Whether the extinction occurs mainly in the lens galaxy or in the source itself is a matter in debate. Also, a discrepancy is observed between the radio and optical flux ratios for images A1 and A2, which could be due either to differential magnification near a caustic or to differential extinction (Schechter et al. 1992, hereafter SM92; Angonin-Willaime et al. 1994, hereafter AW94). The new IR and optical data discussed here could throw some light on these obscure issues.

Type
Chapter 9: Observational Developments
Information
Symposium - International Astronomical Union , Volume 173: Astrophysical Applications of Gravitational Lensing , 1996 , pp. 353 - 354
Copyright
Copyright © Kluwer 1996 

References

Angonin-Willaime, M.-C., Vanderriest, C., Hammer, F. & Magain, P., 1994, A&A, 281, 388 (AW94).Google Scholar
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