J/AJ/121/31: Resource Record Summary

Resource Record Summary

Catalog Service:
High-redshift quasars in SDSS

Short name: J/AJ/121/31 IVOA Identifier: ivo://CDS.VizieR/J/AJ/121/31 DOI (Digital Object Identifier): 10.26093/cds/vizier.51210031 Publisher: CDSivo://CDS[Pub. ID] More Info: https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/121/31 VO Compliance: Level 2: This is a VO-compliant resource.	Status: active Registered: 2005 May 08 15:54:52Z
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Description

This is the third paper in a series aimed at finding high-redshift quasars from five-color (u'g'r'i'z') imaging data taken along the celestial equator by the Sloan Digital Sky Survey (SDSS) during its commissioning phase. In this paper, we first present the observations of 14 bright, high-redshift quasars (3.66<=z<=4.77, i*<~20) discovered in the SDSS fall equatorial stripe, and the SDSS photometry of two previously known high-redshift quasars in the same region of the sky. Combined with the quasars presented in Paper I (1999AJ....118....1F) and by Schneider et al. (2001AJ....121.1232S), we define a color-selected flux-limited sample of 39 quasars at 3.6<z<5.0 and i*<~20, covering a total effective area of 182deg^2^. From this sample, we estimate the average spectral power-law slope in the rest-frame UV for quasars at z~4 to be -0.79 with a standard deviation of 0.34, and the average rest-frame equivalent width of the Ly{alpha}+N V emission line to be 69{AA} with a standard deviation of 18{AA}. Based on observations obtained with the Sloan Digital Sky Survey, with the Apache Point Observatory 3.5m telescope.

More About this Resource

About the Resource Providers

This section describes who is responsible for this resource

Publisher: CDSivo://CDS[Pub. ID]

Creators:

Fan X.Strauss M.A.Richards G.T.Newman J.A.Becker R.H.Schneider D.P.Gunn J.E.Davis M.White R.L.Lupton R.H.Anderson J.E.JRAnnis J.Bahcall N.A.Brunner R.J.Csabai I.Doi M.Fukugita M.Hennessy G.S.Hindsley R.B.Ivezic Z.Knapp G.R.Mckay T.A.Munn J.A.Pier J.R.Szalay A.S.York D.G.

Contact Information:

X CDS support team
Email: cds-question at unistra.fr
Address: CDS
Observatoire de Strasbourg
11 rue de l'Universite
F-67000 Strasbourg
France

Status of This Resource

This section provides some status information: the resource version, availability, and relevant dates.

Version: n/a
Availability: This is an active resource.

This service provides only public data.

Relevant dates for this Resource:

Updated: 2005 May 08 15:55:17Z
Created: 2005 May 08 15:54:52Z

This resource was registered on: 2005 May 08 15:54:52Z
This resource description was last updated on: 2021 Oct 21 00:00:00Z

What This Resource is About

This section describes what the resource is, what it contains, and how it might be relevant.

Resource Class: CatalogService: This resource is a service that provides access to catalog data. You can extract data from the catalog by issuing a query, and the matching data is returned as a table.

Resource type keywords: Catalog	Subject keywords: Quasars Surveys
Intended audience or use: Research: This resource provides information appropriate for supporting scientific research.
More Info: https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/121/31	Literature Reference: 2001AJ....121...31F
Related Resources: Other Related Resources TAP VizieR generic service(IsServedBy) ivo://CDS.VizieR/TAP [Res. ID] Conesearch service(IsServedBy)

	Data Coverage Information
	This section describes the data's coverage over the sky, frequency, and time. Wavebands covered: Optical

	Rights and Usage Information
	This section describes the rights and usage information for this data. Rights:

Available Service Interfaces

	Custom Service
	This is service that does not comply with any IVOA standard but instead provides access to special capabilities specific to this resource. VO Compliance: Level 2: This is a VO-compliant resource. Available endpoints for this service interface: Interactive web page: http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/121/31

	Custom Service
	This is service that does not comply with any IVOA standard but instead provides access to special capabilities specific to this resource. VO Compliance: Level 2: This is a VO-compliant resource. Available endpoints for this service interface: URL-based interface: http://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/121/31

	Table Access Protocol - Auxiliary ServiceXX
	This is a standard IVOA service that takes as input an ADQL or PQL query and returns tabular data. VO Compliance: Level 2: This is a VO-compliant resource. Available endpoints for the standard interface: http://tapvizier.cds.unistra.fr/TAPVizieR/tap

Simple Cone SearchXXSearch Me

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.

VO Compliance: Level 2: This is a VO-compliant resource.
Description:

Cone search capability for table J/AJ/121/31/qbright (Bright SDSS High-Redshift Quasars (tables 1 and 3 of paper))

Available endpoints for the standard interface:

http://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/121/31/qbright?

Maximum search radius accepted: 180.0 degrees
Maximum number of matching records returned: 50000

This service supports the VERB input parameter:: Use VERB=1 to minimize the returned columns or VERB=3 to maximize.

Simple Cone SearchXXSearch Me

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.

VO Compliance: Level 2: This is a VO-compliant resource.
Description:

Cone search capability for table J/AJ/121/31/table4 (Color-selected Sample of 182 deg^2^ in the Fall Equatorial Stripe)

Available endpoints for the standard interface:

http://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/121/31/table4?

Maximum search radius accepted: 180.0 degrees
Maximum number of matching records returned: 50000

This service supports the VERB input parameter:: Use VERB=1 to minimize the returned columns or VERB=3 to maximize.

Simple Cone SearchXXSearch Me

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.

VO Compliance: Level 2: This is a VO-compliant resource.
Description:

Cone search capability for table J/AJ/121/31/table7 (Positions and Photometry of Faint SDSS High-Redshift Quasars)

Available endpoints for the standard interface:

http://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/121/31/table7?

Maximum search radius accepted: 180.0 degrees
Maximum number of matching records returned: 50000

This service supports the VERB input parameter:: Use VERB=1 to minimize the returned columns or VERB=3 to maximize.