Bibcode
DOI
Sbarufatti, B.; Treves, A.; Falomo, R.; Heidt, J.; Kotilainen, J.; Scarpa, R.
Referencia bibliográfica
The Astronomical Journal, Volume 129, Issue 2, pp. 559-566.
Advertised on:
2
2005
Número de citas
71
Número de citas referidas
64
Descripción
We report redshift measurements for 12 BL Lacertae objects from a
program aimed at obtaining high signal-to-noise ratio (up to ~500)
optical spectroscopy of a mixed sample of objects. The new observations,
gathered with the 8 m ESO Very Large Telescope, allowed us to detect
weak spectral features down to a line equivalent width as small as ~1
Å. The new redshifts fall in the 0.2-1.3 interval. For nine
objects we observe emission lines from the active nucleus. In the
remaining three cases absorption lines from the host galaxy are found.
For two objects we also detect absorption lines from intervening
systems.