منابع مشابه
SDSS J0903+5028: A New Gravitational Lens
We report the discovery of a new gravitationally lensed quasar from the Sloan Digital Sky Survey, SDSS J090334.92+502819.2. This object was targeted for SDSS spectroscopy as a Luminous Red Galaxy (LRG), but manual examination of the spectrum showed the presence of a quasar at z ≃ 3.6 in addition to a red galaxy at z = 0.388, and Department of Astronomy and Astrophysics, The University of Chicag...
متن کاملA New Spectroscopically Selected Gravitational Lens
We present Gemini integral-field unit (IFU) spectroscopy and Hubble Space Telescope (HST) F435Wand F814W-band images of a newly discovered four-image gravitational lens, SDSSJ140228.22+632133.3 (hereafter SDSSJ1402). The system was identified as one of 49 gravitational-lens candidates in the luminous red galaxy sample of the Sloan Digital Sky Survey, based on higher-redshift emission lines in t...
متن کاملB0850+054: a new gravitational lens system from CLASS
We report the discovery of a new gravitational lens system from the CLASS survey. Radio observations with the VLA, the WSRT and MERLIN show that the radio source B0850+054 is comprised of two compact components with identical spectra, a separation of 0.7 arcsec and a flux density ratio of 6:1. VLBA observations at 5 GHz reveal structures that are consistent with the gravitational lens hypothesi...
متن کاملA new quadruple gravitational lens system: CLASS B01281437
1 University of Manchester, Jodrell Bank Observatory, Macclesfield, Cheshire SK11 9DL 2 Kapteyn Astronomical Institute, Postbus 800, NL-9700 AV Groningen, the Netherlands California Institute of Technology, Pasadena, CA 91125, USA Netherlands Foundation for Research in Astronomy, Postbus 2, NL-7990 AA Dwingeloo, the Netherlands 5 National Radio Astronomy Observatory, PO Box 0, Socorro, NM 87801...
متن کاملCLASS B0445+123: a new two-image gravitational lens system
A new two image gravitational lens system has been discovered as a result of the Cosmic Lens All-Sky Survey (CLASS). Radio observations with the VLA, MERLIN and the VLBA at increasingly higher resolutions all show two components with a flux density ratio of ∼7:1 and a separation of 1. 34. Both components are compact and have the same spectral index. Follow-up observations made with the VLA at 8...
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ژورنال
عنوان ژورنال: The Astronomical Journal
سال: 1999
ISSN: 0004-6256
DOI: 10.1086/301056