Bibcode
DOI
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
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.