BVRI photometry of 7 BL Lac objects Virtual Observatory Resource

Authors

1. Bai J.M
2. Xie G.Z.
3. Li K.H.
4. Zhang X.
5. Liu W.W.

Published by

CDS

Abstract

Seven BL Lac objects have been photometrically observed in an effort to study the difference of optical intraday variability between the radio-selected BL Lac objects (RBLs) and X-ray-selected BL Lac objects (XBLs). The objects we observed are selected arbitrarily. They are four RBLs, PKS 0735+178, PKS 0754+101, OJ 287 and BL Lac, and three XBLs, H 0323+022, H 0548-322 and H 2154-304. During the observation all of them exhibited microvariation, and H 0323+022 and H 0548-322 sometimes showed brightness oscillation. PKS 0735+178 and BL Lac were in their faint states and not very active. It seems that RBLs do not show microvariability more frequently than XBLs.

Keywords

1. bl-lacertae-objects
2. infrared-photometry
3. visible-astronomy
4. Wide-band photometry

Bibliographic source Bibcode

1998A&AS..132...83B

See also HTML

https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/132/83

IVOA Identifier IVOID

ivo://CDS.VizieR/J/A+AS/132/83

Access

IVOA Table Access TAP

https://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).