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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



ID: 693630.0, MPI für Astronomie / Publikationen_mpia
ESO Very Large Telescope optical spectroscopy of BL Lacertae objects. IV. New spectra and properties of the full sample
Authors:Landoni, M.; Falomo, R.; Treves, A.; Sbarufatti, B.; Barattini, M.; Decarli, R.; Kotilainen, J.
Date of Publication (YYYY-MM-DD):2013
Title of Journal:The Astronomical Journal
Volume:145
Issue / Number:4
Start Page:id. 114 (12 pp)
Audience:Not Specified
Abstract / Description:We present the last chapter of a spectroscopy program aimed at deriving the redshift or a lower limit to the redshift of BL Lac objects using medium-resolution spectroscopy. Here we report new spectra for 33 BL Lac object candidates obtained in 2008-2009, confirming the BL Lac nature of 25 sources and obtaining new redshifts for 5 objects. These new observations are combined with our previous data in order to construct a homogeneous sample of ~70 BL Lac objects with high-quality spectroscopy. All these spectra can be accessed at the Web site http://www.oapd.inaf.it/zbllac/. The average spectrum, beaming properties of the full sample, discussion of intervening systems, and future perspectives are addressed.
Free Keywords:BL Lacertae objects: general; instrumentation: spectrographs; quasars: absorption lines
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:ISSN:0004-6256
URL:http://cdsads.u-strasbg.fr/abs/2013AJ....145..114L
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