NDLI: Thirteen new bl lacertae objects discovered by an efficient x ray/radio/optical technique

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Thirteen new bl lacertae objects discovered by an efficient x ray/radio/optical technique

Content Provider	NASA Technical Reports Server (NTRS)
Author	Luu, Jane Perlman, Eric Remillard, Ron Wallin, John Schachter, Jonathan F. Stocke, John T. Elvis, Martin S. Huchra, John P. Humphreys, Roberta
Copyright Year	1992
Description	The discovery of 13 serendipitous BL Lac objects in the Einstein IPC Slew Survey by means of x ray/radio vs. x ray/optical color-color diagrams and confirmation by optical spectroscopy are reported. These 13 BL Lacs were discovered using a technique which exploits the characteristic broad band spectra of BL Lacs. New VLA detections provide accurate fluxes (f(6 cm) is approximately 0.5 mJy) and 2 in. positions, facilitating the determination of an optical counterpart. All 13 new BL Lacs show essentially featureless optical spectra. Nine of these lie within the range of colors of known x ray selected BL Lacs. Of the remaining four, one is apparently x ray louder (by a factor of 1.5) or optically quieter (by 0.8 mags); and three are optically louder (by 1-1.3 mags) than x ray selected BL Lacs. Approximately 50 new BL Lacs in total are expected from VLA work and upcoming Australia Telescope observations, yielding a complete Slew Survey sample of approximately 90 BL Lacs.
File Size	641177
Page Count	18
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19930011607
Archival Resource Key	ark:/13960/t4tj3f07r
Language	English
Publisher Date	1992-05-01
Access Restriction	Open
Subject Keyword	Astronomy Spectroscopy Radio Astronomy Broadband Bl Lacertae Objects Stellar Magnitude Color-color Diagram Sky Surveys Astronomy Cosmic X Rays X Ray Sources Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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