2003/06/30 by N. Carangelo, R. Falomo, J. Kotilainen +3
Physics and Astronomy · #Astronomical spectroscopy #Astrophysical Phenomena and Observations #Astrophysics and Cosmic Phenomena #Emission spectrum #Galaxies: Formation, Evolution, Phenomena #Galaxy #Optical spectra #Quasar #Redshift #Spectral line #Spectroscopy #astro-ph
paper · pdf · doi:10.1051/0004-6361:20031519
published as Astron.Astrophys.412:651-656,2003 · Accepted for publication in A&A; 6 pages
arxiv created 2003/06/30 · openalex publication_date 2003/12/01 · openalex created_date 2016/06/24 · arxiv updated 2016/08/30 · openalex updated_date 2026/08/05
We are carrying out a multi-purpose program of high signal to noise optical spectroscopy at medium resolution of 30 BL Lac objects. Here we report the detection of three new redshifts, and the discovery of three misclassified sources. The new redshifts refer to PKS 0754+100 (), H-1914-194 () and 1ES0715-259, for which we derive a redshift of and also a “new” classification a Steep Spectrum Radio Quasar. In two cases (UM493 and 1620+103) stellar spectra indicate a wrong classification. The three sources with new redshift measurement show strong [OIII] emission in their spectra and their host galaxy properties are known. The central black hole masses derived using the and the MBH-σ([OIII]) relations are compared.