Spectroscopic Measurements of 15 RGB BL Lac Objects (Poster)

Details Spectroscopic Measurements of 15 RGB BL Lac Objects (Poster) Spectroscopic Measurements of 15 RGB BL Lac Objects (Poster)

Jul 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aspc..299..309p&link_type=abstract

High Energy Blazar Astronomy, ASP Conference Proceedings, Vol. 299, held 17-21 June 2002 at Tuorla Observatory, Piikkio, Finland

Astronomy and Astrophysics

Astronomy

Scientific paper

The RASS-Green Bank (RGB) BL Lac sample consists of 127 objects. Out of these, redshifts are known for approximately one-half. We have obtained spectroscopic observations of 15 objects at the Calar Alto 2.2 m telescope. Most of them have optical magnitudes around 18 mag in the R-band. We attempted to determine their redshifts and were successful for two objects (RGB2039+523, z = 0.053 and RGB1811+442, z = 0.337) with any confidence.

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