Optical photometry of quasar 0957+561A,B

被引:11
作者
Oscoz, A
SerraRicart, M
Goicoechea, LJ
Buitrago, J
Mediavilla, E
机构
[1] Inst. de Astrofis. de Canarias, Tenerife, Canary Islands
[2] Depto. de Física Moderna, Universidad de Cantabria, E-39005, Santander, Cantabria
基金
美国国家科学基金会;
关键词
gravitational lensing; quasars; individual; (0957+561);
D O I
10.1086/310295
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
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.
引用
收藏
页码:L19 / L21
页数:3
相关论文
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