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Resource Record Summary

Catalog Service:
BV(RI)c photometry of ON 231
Short name: J/A+AS/130/109
IVOA Identifier: ivo://CDS.VizieR/J/A+AS/130/109Publisher: CDSivo://CDS[Pub. ID]
More Info: http://cdsarc.unistra.fr/cgi-bin/cat/J/A+AS/130/109
VO Compliance: Level 2: This is a VO-compliant resource.		 Status: active
Registered: 1998 Jun 08 14:55:58Z
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Description


We present the most continuous data base of optical multiband data ever published on the BL Lacertae object ON 231 (W Com). The data have been collected during an intensive and coordinated BV(RI)c monitoring campaign carried out in the period from March 1994 to March 1997. During our campaign, the source brightness was at the highest level ever observed. The light curve shows a complex structure, characterized by the presence of three major outbursts having the observed maxima in March 1995, February 1996, and January 1997, when ON 231 reached its historical maximum (B~=14.2). Variability on time scales from a few hours up to a month have frequently been observed and the light curve seems to be the superposition of many flares with different amplitudes and time scales. The broad-band optical spectral energy distribution is characterized by a spectral slope which correlates with the flux level. In particular, the higher is the flux the flatter is the spectrum.

More About this Resource

About the Resource Providers

This section describes who is responsible for this resource

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

Creators:
Tosti G.Fiorucci M.Luciani M.Rizzi M. Villata N.Raiteri C.M.De Francesco G.Lanteri L.Chiaberge M.Peila A.Cavallone M.Sobrito G.Maesano M.Massaro E.Montagni F.Nesci R.Ghisellini G.Takalo L.O.Sillanpaa A.Katajainen S.Heinamaki P.Nilsson K.Pursimo T.

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: 1998 Jun 08 14:56:04Z
  • Created: 1998 Jun 08 14:55:58Z

This resource was registered on: 1998 Jun 08 14:55:58Z
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:
  • BL Lacertae objects
  • Optical astronomy
  • Kron-Cousins photometry
  • Photometry
  • Wide-band photometry
  • Infrared photometry
Intended audience or use:
  • Research: This resource provides information appropriate for supporting scientific research.
More Info: http://cdsarc.unistra.fr/cgi-bin/cat/J/A+AS/130/109 Literature Reference: 1998A&AS..130..109T

Related Resources:

Other Related Resources
TAP VizieR generic service(IsServedBy) ivo://CDS.VizieR/TAP [Res. ID]
J/A+AS/116/403 : VRI photometry of stars in 12 BL Lac objects (Fiorucci+, 1996) ivo://CDS.VizieR/J/A+AS/116/403 [Res. ID]

Data Coverage Information

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

Wavebands covered:

  • Optical
  • 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/A+AS/130/109
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

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
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