Astronomy and Astrophysics – Astrophysics
Scientific paper
1998-01-29
Astronomy and Astrophysics
Astrophysics
18 pages, including 7 figures, to appear in Astronomical Journal, April 1988
Scientific paper
10.1086/300285
We present near infrared observations of the red gravitational lens system MG0414+0534. Our images are of sufficient quality to allow photometry of all four QSO images and the lens galaxy. The observations show that the K-band brightnesses of the components are more similar to the radio brightnesses than to the optical and thus support the notion that the system is highly reddened. The differing brightnesses at visible wavelengths are interpreted as variable amounts of extinction in the lens galaxy. The lens galaxy is detected at K-band and is as red as any other known galaxy of comparable apparent magnitude. An estimate of the redshift of the lens galaxy of 0.45 < z < 0.6 is determined from the Faber-Jackson relation and photometric considerations. By extension we argue that other very red field galaxies may contain large amounts of dust. K-band spectra of the individual components show no difference in the H-alpha equivalent widths among the components. This is evidence against significant microlensing.
Bernstein Gary M.
McLeod Brian Andrew
Rieke Marcia J.
Weedman Dan W.
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