Pune meeting
Sebastien Derriere
derriere at newb6.u-strasbg.fr
Thu Sep 23 07:54:48 PDT 2004
Robert Hanisch wrote:
>
> It would be great to hear about this, Pierre. We'd also be interested in
> the inverse, i.e., getting CDS resources properly entered in the VO
> registry. Most of the entries we have now are very incomplete, if not
> outright wrong. This is a major issue for registry curation, as I'm sure
> you can appreciate.
>
> See you in Pune,
> Bob
Hello Bob,
I was in fact finishing up a new version of the repository of CDS
resources, relying on the latest versions of the Schemas
(VOResource-v0.10).
I have added many metadata in the output, and also there are several
differences in the protocol, so I put this at a temporary different
address (so that you harvesters don't crash your system because of
receiving a shomehow unexpected result).
The root address to access this new description is:
http://vizier.u-strasbg.fr/cgi-bin/registry/vizier/oai_test.pl
This is a temporary address only: when people have tested it,
it will be moved to replace the old incomplete repository:
http://vizier.u-strasbg.fr/cgi-bin/registry/vizier/oai.pl
This is an OAI implementation, so it supports the different PMH
verbs. For an example, you can try:
http://vizier.u-strasbg.fr/cgi-bin/registry/vizier/oai_test.pl?verb=GetRecord&metadataPrefix=ivo_vor&identifier=ivo%3A%2F%2FCDS%2FVizieR%2FJ%2FApJ%2F481%2F95%2Ftable1
List of changes include:
- metadataPrefix changed from ivo_vr to ivo_vor
- identifiers changed (start with ivo:// and ':' replaced by '/'). e.g.:
oai:CDS/VizieR:J/ApJ/481/95/table2 becomes
ivo://CDS/VizieR/J/ApJ/481/95/table2
- name of the elements have changed to follow VOResource-v0.10 and
other schemas. Now you will find new/improved resource description of:
o curation/creator (people/organization who created the table)
o curation/contributor (people who helped making the table available)
o curation/date (when the table description was finalized)
o content/subject (split in individual subjects)
o content/description (paragraph extracted from ReadMe)
o content/referenceURL (link to ReadMe)
o interface(s) (each table can be accessed as a WebBrowser or
ParamHTTP)
o facility (when available)
o coverage/spectral
o full table column description
I send in attachment to this message the old and new metadata for
one VizieR table.
Let me know if you have comments/suggestions to improve this new
version!
Sebastien
--
_______
/ ~ /, Sebastien Derriere mailto:derriere at astro.u-strasbg.fr
/ ~~~~ // Observatoire de Strasbourg Phone +33 (0) 390 242 444
/______// 11, rue de l'universite Telefax +33 (0) 390 242 417
(______(/ F-67000 Strasbourg France
-------------- next part --------------
<?xml version="1.0" encoding="UTF-8"?>
<OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd">
<responseDate>2004-09-23T14:19:54Z</responseDate>
<request verb="GetRecord" metadataPrefix="ivo_vr" identifier="oai:CDS/VizieR:J/ApJ/481/95/table1">http://vizier.u-strasbg.fr/cgi-bin/registry/vizier/oai.pl</request>
<GetRecord>
<record>
<header>
<identifier>oai:CDS/VizieR:J/ApJ/481/95/table1</identifier>
<datestamp>1998-09-19</datestamp>
<setSpec>J.ApJ</setSpec>
</header>
<metadata>
<vr:Resource xmlns="http://www.ivoa.net/xml/VOResource/v0.9" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:vr="http://www.ivoa.net/xml/VOResource/v0.9" xsi:schemaLocation="http://www.ivoa.net/xml/VOResource/v0.9 http://vizier.u-strasbg.fr/UCD/VOResource-v0.9.xsd">
<Identifier>
<AuthorityID>CDS</AuthorityID>
<ResourceKey>VizieR/J/ApJ/481/95/table1</ResourceKey>
</Identifier>
<Title>Radio identification of EGRET sources (Mattox+ 1997) - Potential radio identifications of sources in the second EGRET catalog</Title>
<ShortName>J/ApJ/481/95/table1</ShortName>
<Summary>
<Description> </Description>
<ReferenceURL>http://vizier.u-strasbg.fr/cgi-bin/Cat?J/ApJ/481/95/table1</ReferenceURL>
<Source>1997ApJ...481...95M</Source>
</Summary>
<Type>Catalog</Type>
<Curation>
<Publisher>
<Identifier>
<AuthorityID>CDS</AuthorityID>
<ResourceKey>VizieR</ResourceKey>
</Identifier>
<Title>VizieR</Title>
<Description>The CDS VizieR catalogue service</Description>
<ReferenceURL>http://vizier.u-strasbg.fr</ReferenceURL>
</Publisher>
<Contact>
<Name>F. Ochsenbein</Name>
</Contact>
</Curation>
<Subject>CGRO Gamma-ray Radio AGN Stars </Subject>
<ContentLevel>Research</ContentLevel>
</vr:Resource>
</metadata>
</record>
</GetRecord>
</OAI-PMH>
-------------- next part --------------
<?xml version="1.0" encoding="UTF-8"?>
<OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd">
<responseDate>2004-09-23T13:48:56Z</responseDate>
<request verb="GetRecord" metadataPrefix="ivo_vor" identifier="ivo://CDS/VizieR/J/ApJ/481/95/table1">http://vizier.u-strasbg.fr/cgi-bin/registry/vizier/oai_test.pl</request>
<GetRecord>
<record>
<header>
<identifier>ivo://CDS/VizieR/J/ApJ/481/95/table1</identifier>
<datestamp>1998-09-19T17:25:16Z</datestamp>
<setSpec>J.ApJ</setSpec>
</header>
<metadata>
<resource xsi:type="vs:TabularSkyService" xmlns="http://www.ivoa.net/xml/VOResource/v0.10" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:vr="http://www.ivoa.net/xml/VOResource/v0.10" xmlns:vs="http://www.ivoa.net/xml/VODataService/v0.5" xmlns:cs="http://www.ivoa.net/xml/ConeSearch/v0.3" xsi:schemaLocation="http://www.ivoa.net/xml/VOResource/v0.10 http://www.ivoa.net/xml/VOResource/VOResource-v0.10.xsd http://www.ivoa.net/xml/VODataService/v0.5 http://www.ivoa.net/xml/VODataService/VODataService-v0.5.xsd http://www.ivoa.net/xml/ConeSearch/v0.3 http://www.ivoa.net/xml/ConeSearch/ConeSearch-v0.3.xsd">
<title>Radio identification of EGRET sources (Mattox+ 1997) - Potential radio identifications of sources in the second EGRET catalog</title>
<shortName>J/ApJ/481/95/tab</shortName>
<identifier>ivo://CDS/VizieR/J/ApJ/481/95/table1</identifier>
<curation>
<publisher ivo-id="ivo://CDS/VizieR">VizieR</publisher>
<creator>
<name>Mattox J.R., Schachter J., Molnar L., Hartman R.C., Patnaik A.R.</name>
</creator>
<contributor>James Marcout, Patricia Bauer [CDS]</contributor>
<date role="creation">1998-09-19T17:25:16Z</date>
<version>07-Oct-1997</version>
<contact>
<name>CDS support team</name>
<address>CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France</address>
<email>question at simbad.u-strasbg.fr</email>
</contact>
</curation>
<content>
<subject>AGN</subject>
<subject>Stars</subject>
<description>We present a method to assess the reliability of the identification of EGRET sources with extragalactic radio sources. We verify that EGRET is detecting the blazar class of active galactic nuclei (AGNs). However many published identifications are found to be questionable. We provide a table of 42 blazars that we expect to be robust identifications of EGRET sources. This includes one previously unidentified EGRET source, the lensed AGN PKS 1830-210, near the direction of the Galactic center. We provide the best available positions for 16 more radio sources that are also potential identifications for previously unidentified EGRET sources. All high Galactic latitude EGRET sources (|b|>3) that demonstrate significant variability can be identified with flat-spectrum radio sources. This suggests that EGRET is not detecting any type of AGN other than blazars. This identification method has been used to establish with 99.998% confidence that the peak gamma-ray flux of a blazar is correlated with its average 5GHz radio flux. An even better correlation is seen between gamma-ray flux and the 2.29GHz flux density measured with VLBI at the base of the radio jet. Also, using high-confidence identifications, we find that the radio sources identified with EGRET sources have greater correlated VLBI flux densities than the parent population of flat radio spectrum sources. </description>
<source format="bibcode">1997ApJ...481...95M</source>
<referenceURL>http://vizier.u-strasbg.fr/cgi-bin/Cat?J/ApJ/481/95/table1</referenceURL>
<type>Catalog</type>
<contentLevel>Research</contentLevel>
</content>
<interface xsi:type="vr:WebBrowser"> <accessURL use="full">http://vizier.u-strasbg.fr/cgi-bin/VizieR-2?-source=J/ApJ/481/95/table1</accessURL>
</interface>
<interface qtype="GET" xsi:type="vs:ParamHTTP"> <accessURL use="base">http://vizier.u-strasbg.fr/viz-bin/votable/-dtd/-A?-source=J/ApJ/481/95/table1</accessURL>
<vs:resultType>text/xml+votable</vs:resultType>
</interface>
<vs:facility>CGRO</vs:facility>
<vs:coverage>
<vs:spectral>
<vs:waveband>Gamma-ray</vs:waveband>
<vs:waveband>Radio</vs:waveband>
</vs:spectral>
</vs:coverage>
<vs:table xmlns="http://www.ivoa.net/xml/VODataService/v0.5"> <vs:name>J/ApJ/481/95/table1</vs:name>
<vs:description>Potential radio identifications of sources in the second EGRET catalog</vs:description>
<vs:column> <name>recno</name>
<description>Record number within the original table (starting from 1)</description>
<unit> </unit>
<ucd>RECORD</ucd>
</vs:column>
<vs:column> <name>2EG</name>
<description>J2000 position name of the EGRET source</description>
<unit> </unit>
<ucd>ID_MAIN</ucd>
</vs:column>
<vs:column> <name>n_2EG</name>
<description>[cfj] Note (1)</description>
<unit> </unit>
<ucd>NOTE</ucd>
</vs:column>
<vs:column> <name>GLON</name>
<description>Galactic longitude</description>
<unit>deg</unit>
<ucd>POS_GAL_LON</ucd>
</vs:column>
<vs:column> <name>GLAT</name>
<description>Galactic latitude</description>
<unit>deg</unit>
<ucd>POS_GAL_LAT</ucd>
</vs:column>
<vs:column> <name>n_GLAT</name>
<description>[km] Note on GLAT (2)</description>
<unit> </unit>
<ucd>NOTE</ucd>
</vs:column>
<vs:column> <name>VI</name>
<description>? Variability index (3)</description>
<unit> </unit>
<ucd>VAR_INDEX</ucd>
</vs:column>
<vs:column> <name>ID</name>
<description>? EGRET catalogue identification (OtherName in EGRET catalog description)</description>
<unit> </unit>
<ucd>ID_ALTERNATIVE</ucd>
</vs:column>
<vs:column> <name>u_ID</name>
<description>[?] ?: lower confidence level, else high-confidence level</description>
<unit> </unit>
<ucd>CODE_ERROR</ucd>
</vs:column>
<vs:column> <name>RadioID</name>
<description>Possible radio counterpart (4)</description>
<unit> </unit>
<ucd>ID_CROSSID</ucd>
</vs:column>
<vs:column> <name>n_RadioID</name>
<description>[abdginxy] Note (5)</description>
<unit> </unit>
<ucd>NOTE</ucd>
</vs:column>
<vs:column> <name>Names</name>
<description>Other name of counterpart</description>
<unit> </unit>
<ucd>ID_ALTERNATIVE</ucd>
</vs:column>
<vs:column> <name>n_Names</name>
<description>[hlew] Note (6)</description>
<unit> </unit>
<ucd>NOTE</ucd>
</vs:column>
<vs:column> <name>S5GHz</name>
<description>? Density flux at 4.85GHz</description>
<unit>mJy</unit>
<ucd>PHOT_FLUX_RADIO_5G</ucd>
</vs:column>
<vs:column> <name>SI</name>
<description>? Radio spectral index</description>
<unit> </unit>
<ucd>SPECT_SP-INDEX</ucd>
</vs:column>
<vs:column> <name>r0</name>
<description>? Characteristic angle between confusing sources that are at least as bright and flat as this radio source</description>
<unit>arcmin</unit>
<ucd>EXTENSION_RAD</ucd>
</vs:column>
<vs:column> <name>eta</name>
<description>? a priori probability {eta} = p(id) that the source is a {gamma}-ray source</description>
<unit> </unit>
<ucd>STAT_PROBABILITY</ucd>
</vs:column>
<vs:column> <name>r</name>
<description>? Angle between the EGRET position estimate and the radio position</description>
<unit>arcmin</unit>
<ucd>POS_ANG_DIST_GENERAL</ucd>
</vs:column>
<vs:column> <name>r95</name>
<description>? Radius of the 95% confidence contour in the direction of the radio source</description>
<unit>arcmin</unit>
<ucd>EXTENSION_RAD</ucd>
</vs:column>
<vs:column> <name>Contour</name>
<description>? Position contour at the radio position</description>
<unit>%</unit>
<ucd>POS_MAP</ucd>
</vs:column>
<vs:column> <name>LR</name>
<description>? Likelihood ratio indicating the strength of the indication for the determination</description>
<unit> </unit>
<ucd>STAT_LIKELIHOOD-RATIO</ucd>
</vs:column>
<vs:column> <name>p(id/r)</name>
<description>? a posteriori probability that the identification is correct</description>
<unit> </unit>
<ucd>STAT_PROBABILITY</ucd>
</vs:column>
</vs:table>
</resource>
</metadata>
</record>
</GetRecord>
</OAI-PMH>
More information about the registry
mailing list