Bibcode
Dultzin-Hacyan, D.; Benitez, Erika; de Diego, Jose Antonio; Wei, J. Y.; Gu, Q. S.
Referencia bibliográfica
BL Lac Phenomenon, a conference held 22-26 June, 1998 in Turku, Finland, p. 269.
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1999
Número de citas
0
Número de citas referidas
0
Descripción
Broad band B V R I, CCD photometry and spectrophotometry observations
are presented for the blazar OJ 287. A nightly monitoring was carried
out at San Pedro Martir and Beijing Observatories for five nights during
minimum brightness of OJ287 (January 1998). The observations are nearly
simultaneous (actually sequential due to day/night difference) and the
spectral range covers approximately the same range as the broad band
photometry. We report both continuum and line variability, and discuss
our results.