GCVS/?: Resource Record Summary

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Resource Record Summary

Catalog Service:
General Catalog of Variable Stars, March 2012 Version: Suspected Variable Stars

Short name: GCVS/? IVOA Identifier: ivo://nasa.heasarc/gcvsnsvarsPublisher: NASA/GSFC HEASARC[+]ivo://nasa.heasarc/ASD[Pub. ID] More Info: https://heasarc.gsfc.nasa.gov/W3Browse/all/gcvsnsvars.html VO Compliance: Level 2: This is a VO-compliant resource.	Status: active Registered: 2025 May 02 00:00:00Z
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Description

This catalog is a compilation of stars that have been suspected of variability but have (mostly) not been finally designated as variables. It is the merging and latest updated version of the compilation of the New Catalog of Suspected Variable Stars (NSV Catalog) originally published in 1982 by Kukarkin et al. and the Supplement to the NSV originally published in 1998 by Kazarovets et al. This version (NSV Release 2) has updated the previous catalog in several ways. The accuracy of coordinates has been drastically improved for the objects in the catalog; for most of them, the authors have revised the photometric and spectroscopic data and updated the remarks. In the cases with no existing finding charts, the authors recovered variability of 2800 stars of the catalog, despite large errors of the previously published coordinates. The data contained in the present catalog include positions, magnitudes, variability types, references to the literature, and spectra. This version of the GCVS catalog was last updated by the HEASARC in September 2022, based on the files <a href="http://www.sai.msu.su/gcvs/gcvs/nsv2/nsv2.txt">http://www.sai.msu.su/gcvs/gcvs/nsv2/nsv2.txt</a> and <a href="http://www.sai.msu.su/gcvs/gcvs/nsvsup/nsvs.dat">http://www.sai.msu.su/gcvs/gcvs/nsvsup/nsvs.dat</a>. This is a service provided by NASA HEASARC .

More About this Resource

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About the Resource Providers

This section describes who is responsible for this resource

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Status of This Resource

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

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What This Resource is About

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

[+]	Data Coverage Information
	This section describes the data's coverage over the sky, frequency, and time. Reference Coordinate System: UTC-ICRS-TOPOXX[+]ivo://STClib/CoordSys#UTC-ICRS-TOPO[Res. ID] Sky Coverage: Regions covered: All-sky: The data from this resource is distributed over the entire sky. Typical Size Scale (Region of Regard): , 0.0166666666666667 deg Wavebands covered: Optical

Available Service Interfaces

[+] 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.

[+]	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: https://heasarc.gsfc.nasa.gov/xamin/vo/tap

[+]	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: https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=gcvsnsvars

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Custom Service

This is service that does not comply with any IVOA standard but instead provides access to special capabilities specific to this resource.

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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