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- W2000558712 abstract "view Abstract Citations (89) References (8) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Spectroscopic and Photometric Data for a Sample of Quasi-Stellar Objects Identified by Their Infrared Excess Braccesi, A. ; Lynds, R. ; Sandage, A. Abstract The criterion of infrared excess has been used to obtain a first candidate list of non-radio QSOs in a field centered at 15h, +35°. Spectrographic data for objects with infrared excesses, chosen from a complete catalogue of blue objects to B 19.4 mag, show that fifteen objects, out of sixteen candidates observed, have emission lines characteristic of QSOs. Redshifts are given for fourteen of the objects. The surface density of QSOs in this field, when compared with the results of a survey to a brighter limiting magnitude for the PilL field D36m, +6°, shows that the number of objects continues to increase quite steeply going to fainter magnitudes Publication: The Astrophysical Journal Pub Date: May 1968 DOI: 10.1086/180189 Bibcode: 1968ApJ...152L.105B full text sources ADS | data products NED (21) SIMBAD (20)" @default.
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- W2000558712 date "1968-05-01" @default.
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- W2000558712 title "Spectroscopic and Photometric Data for a Sample of Quasi-Stellar Objects Identified by Their Infrared Excess" @default.
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