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A close look at Q2237+0305*

Published online by Cambridge University Press:  19 July 2016

J. Anthony Tyson
J. Anthony Tyson*
Affiliation:
AT&T Bell Laboratories, 600 Mountain Avenue, Murray Hill, NJ 07974

Abstract

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CCD images of the lensed QSO candidate 2237+0305 in the blue and near-infrared are examined. At least two blue images of the QSO, separated by about 1 arcsec, are found. The inferred velocity dispersion of the lensing galaxy core of 150 km/sec implies that no dark matter is required for this case. Limits on the mass distribution of the lensing galaxy core and bar can be obtained from the data. Since the galaxy is so nearby, this lensed QSO is a good candidate for assisted lensing by individual stars in the galaxy core.

Type
VI. Quasars as Probes of the Intervening Medium
Information
Symposium - International Astronomical Union , Volume 119: Quasars , 1986 , pp. 551 - 552
Copyright
Copyright © Reidel 1986