ICON
NAVO Directory
Search Publish Developers Help
X Tip: What's a "Resource"?
Hosted By
STScI Home
Space Telescope
Science Institute

Resource Record Summary

Catalog Service:
Covering factor of warm dust in quasars
Short name: J/MNRAS/430/3445
IVOA Identifier: ivo://CDS.VizieR/J/MNRAS/430/3445Publisher: CDSivo://CDS[Pub. ID]
More Info: http://cdsarc.unistra.fr/cgi-bin/cat/J/MNRAS/430/3445
VO Compliance: Level 2: This is a VO-compliant resource.		 Status: active
Registered: 2014 Jun 23 12:43:00Z
Get XML

Description


By combining newly obtained infrared photometric data from the All-Sky Data Release of the Wide-field Infrared Survey Explorer with spectroscopic data from the Seventh Data Release of the Sloan Digital Sky Survey, we study the covering factor of warm dust (CFWD) for a large quasar sample, as well as the relations between CFWD and other physical parameters of quasars. We find a strong correlation between the flux ratio in the mid-infrared to near-ultraviolet and the slope of the near-ultraviolet spectra, which is interpreted as a dust extinction effect. After correcting for dust extinction utilizing the above correlation, we examine the relations between CFWD and active galactic nucleus properties: bolometric luminosity (L_bol_), black hole mass (M_BH_) and Eddington ratio (L/L_Edd_). We confirm the anticorrelation between CFWD and L_bol_. Further, we find that CFWD is anticorrelated with M_BH_ but is independent of L/L_Edd_. Radio-loud quasars are found to follow the same correlations as radio-quiet quasars. Monte Carlo simulations show that the anisotropy of the UV-optical continuum of the accretion disc can have a significant effect, but is not likely to dominate the CFWD-L_bol_ correlation.

More About this Resource

About the Resource Providers

This section describes who is responsible for this resource

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

Creators:
Ma X.-C.Wang T.-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: 2017 Nov 10 11:15:51Z
  • Created: 2014 Jun 23 12:43:00Z

This resource was registered on: 2014 Jun 23 12:43:00Z
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:
  • Galaxies
  • Infrared sources
  • Quasars
  • Ultraviolet astronomy
Intended audience or use:
  • Research: This resource provides information appropriate for supporting scientific research.
More Info: http://cdsarc.unistra.fr/cgi-bin/cat/J/MNRAS/430/3445 Literature Reference: 2013MNRAS.430.3445M

Related Resources:

Other Related Resources
TAP VizieR generic service(IsServedBy) ivo://CDS.VizieR/TAP [Res. ID]
Conesearch service(IsServedBy)
II/328 : AllWISE Data Release (Cutri+ 2013) ivo://CDS.VizieR/II/328 [Res. ID]

Data Coverage Information

This section describes the data's coverage over the sky, frequency, and time.

Wavebands covered:

  • UV
  • Infrared
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:
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.unistra.fr/viz-bin/votable?-source=J/MNRAS/430/3445
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.u-strasbg.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/MNRAS/430/3445/tablea1 (Primary data for all 16275 sources in our sample)
Available endpoints for the standard interface:
  • http://vizier.unistra.fr/viz-bin/conesearch/J/MNRAS/430/3445/tablea1?
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.

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
Member
ivoa logo
 Contact Us