Catalog Service: X-ray and UV parameters of radio-quiet quasars
Description
We report new Chandra observations of seven optically faint, z~4 radio-quiet quasars (RQQs). We have combined these new observations with previous Chandra observations of RQQs to create a sample of 174 sources. These sources have 0.1<z<4.7, and 10^44^ergs/s<{nu}L_{nu}_(2500{AA})<10^48^ergs/s. The X-ray detection fraction is 90%.
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Publisher: CDSivo://CDS[Pub. ID]
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This resource was registered on: 2009 Mar 07 22:25:37ZThis resource description was last updated on: 2021 Oct 21 00:00:00Z
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This section describes the data's coverage over the sky, frequency, and time.
Wavebands covered:
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This is service that does not comply with any IVOA standard but instead provides access to special capabilities specific to this resource.
This is a standard IVOA service that takes as input an ADQL or PQL query and returns tabular data.
This is a standard IVOA service that takes as input a position in the sky and a radius and returns catalog records with positions within that radius.
Cone search capability for table J/ApJ/657/116/table2 (List of Archival Sources)
VERB=1
VERB=3
Cone search capability for table J/ApJ/657/116/table4 (X-ray and UV Parameters)
Developed with the support of the National Science Foundation under Cooperative Agreement AST0122449 with the Johns Hopkins University The NAVO project is a member of the International Virtual Observatory Alliance
This NAVO Application is hosted by the Space Telescope Science Institute