Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apj...470l..19o&link_type=abstract
Astrophysical Journal Letters v.470, p.L19
Astronomy and Astrophysics
Astronomy
11
Galaxies: Quasars: Individual Alphanumeric: 0957+561, Cosmology: Gravitational Lensing
Scientific paper
Observations of the gravitational lens system 0957+561A, B in the R band are presented in this Letter. The observations, taken with the 82 cm IAC-80 telescope, at Teide Observatory, Spain, were made from the beginning of 1996 February to June, as part of an on-going lens monitoring program to obtain the time delay between the two components of the system. By comparing our data with those previously published by Kundic et al., we infer that a large delay (>500 days) is inconsistent with both data sets.
Buitrago Jesus
Goicoechea Luis Julian
Mediavilla Evencio
Oscoz Alejandro
Serra-Ricart Miquel
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