Optical Photometry of Quasar 0957+561A, B

Bibcode
1996ApJ...470L..19O
DOI
10.1086/310295
Oscoz, A.; Serra-Ricart, M.; Goicoechea, Luis Julian; Buitrago, Jesus; Mediavilla, Evencio
Bibliographical reference

Astrophysical Journal Letters v.470, p.L19

Advertised on:
10
1996
Number of authors
5
IAC number of authors
4
Citations
13
Refereed citations
13
Description
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.
Type
Refereed
Galaxies
Quasars
Cosmology
Gravitational lensing

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