Optical observations of five X-ray selected BL Lacertae objects

Details Optical observations of five X-ray selected BL Lacertae objects Optical observations of five X-ray selected BL Lacertae objects

Jun 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000a%26as..144..481v&link_type=abstract

Astronomy and Astrophysics Supplement, v.144, p.481-485

Astronomy and Astrophysics

Astrophysics

19

Bl Lacertae Objects: General, Bl Lacertae Objects: Individual: 1Es 0145+138, 1Es 0323+022, 1Es 1028+511, 1Es 1118+424, 1Es 1959+650

Scientific paper

We present optical data obtained with the 1.05 m telescope of the Torino Astronomical Observatory for five X-ray selected BL Lacertae objects. The data are in the Johnson's B, V, and Cousins' R bands. As the observing periods include the pointings of the Satellite per Astronomia X ``Beppo'' (BeppoSAX), our optical information will be comparable with the X-ray observations for a better understanding of the properties of these objects. The present data also provide optical information on sources that have been rarely observed in the optical band. Variability on short time scales (a few days) was found only for 1ES 1959+650. Tables~2--6 are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/Abstract.html

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