Abstract
This study is based on a monitoring of the two components (A and B) of the gravitational lens system QSO 0957+561. The V-band and R-band observations were made with the Nordic Optical Telescope (Roque de los Muchachos Observatory, La Palma, Spain). We have obtained the light curves of the two components in both filters, as well as the corresponding magnification ratios. Finally, we explain the V-band and R-band magnification ratios through two different physical processes taking place in the lens galaxy: microlensing and extinction.
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© 2003 Springer Science+Business Media Dordrecht
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Ullán, A. et al. (2003). Microlensing and Extinction in the Lens System QSO 0957+561. In: Gallego, J., Zamorano, J., Cardiel, N. (eds) Highlights of Spanish Astrophysics III. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-1778-6_41
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DOI: https://doi.org/10.1007/978-94-017-1778-6_41
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-6323-6
Online ISBN: 978-94-017-1778-6
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