Subarcsecond Optical Images of the Radio Gravitational Lens B1152+199

Details Subarcsecond Optical Images of the Radio Gravitational Lens B1152+199 Subarcsecond Optical Images of the Radio Gravitational Lens B1152+199

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001apj...563l.107m&link_type=abstract

The Astrophysical Journal, Volume 563, Issue 2, pp. L107-L109.

Astronomy and Astrophysics

Astronomy

1

Cosmology: Gravitational Lensing, Quasars: Individual (B1152+199)

Scientific paper

We present R-band observations of the Cosmic Lens All-Sky Survey gravitational lens system B1152+199, obtained with the active optics system at the Telescopio Nazionale Galileo. Owing to the very good spatial resolution of the images (0.6"), the optical counterpart of the two quasar components and the lens galaxy have been clearly identified. Contrary to previous estimates, the new location derived for the lens is in excellent agreement with the lensing interpretation for the system. We estimate a time delay of about 30 h-1 days. Based on observations made with the Italian Telescopio Nazionale Galileo operated on the island of La Palma by the Centro Galileo Galilei of the Consorzio Nazionale per l'Astronomia e l'Astrofisica at the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofísica de Canarias.

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