J/ApJ/510/659: Resource Record Summary

Resource Record Summary

Catalog Service:
Size and Structure of AGN in NGC 5548

Short name: J/ApJ/510/659 IVOA Identifier: ivo://CDS.VizieR/J/ApJ/510/659 DOI (Digital Object Identifier): 10.26093/cds/vizier.15100659 Publisher: CDSivo://CDS[Pub. ID] More Info: https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/510/659 VO Compliance: Level 2: This is a VO-compliant resource.	Status: active Registered: 2000 Feb 22 09:31:35Z
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Description

We present the results of 3 yr of ground-based observations of the Seyfert 1 galaxy NGC 5548, which, combined with previously reported data, yield optical continuum and broad-line H{beta} light curves for a total of 8 yr. The light curves consist of over 800 points, with a typical spacing of a few days between observations. During this 8 yr period, the nuclear continuum has varied by more than a factor of 7, and the H{beta} emission line has varied by a factor of nearly 6. The H{beta} emission line responds to continuum variations with a time delay or lag of {=~}10--20 days, the precise value varying somewhat from year to year. We find some indications that the lag varies with continuum flux in the sense that the lag is larger when the source is brighter.

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About the Resource Providers

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

Creators:

Peterson B. M.Barth A. J.Berlind P.Bertram R.Bischoff K.Bochkarev N. G.Burenkov A. N.Cheng F.-Z.Dietrich M.Pilippenko A. V.Giannuzzo E.Ho L. C.Huchra J. P.Hunley J.Kaspi S.Kollatschny W.Leonard D. C.Malkov Y. F.Matheson T.Mignoli M.Nelson B.Papaderos P.Peters J.Pogge R. W.Pronik V. I.Sergeev S. G.Sergeeva E. A.Shapovalova A. I.Stirpe G. M.Tokarz S.Wagner R. M.Wanders I.Wei J.-Y.Wilkes B. J.Wu H.Xue S.-J.Zou Z.-L.

Contact Information:

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Status of This Resource

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

This service provides only public data.

Relevant dates for this Resource:

Updated: 2000 Feb 22 08:32:07Z
Created: 2000 Feb 22 09:31:35Z

This resource was registered on: 2000 Feb 22 09:31:35Z
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: Active galactic nuclei Galaxies Optical astronomy Seyfert galaxies Photometry
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/ApJ/510/659	Literature Reference: 1999ApJ...510..659P
Related Resources: Other Related Resources TAP VizieR generic service(IsServedBy) ivo://CDS.VizieR/TAP [Res. ID] J/ApJS/115/185 : 3C 390.3 BVRI and H photometry (Dietrich+, 1998) ivo://CDS.VizieR/J/ApJS/115/185 [Res. ID]

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

	Rights and Usage Information
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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/ApJ/510/659

	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/ApJ/510/659

	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