/[volute]/trunk/projects/registry/VODataService/VODataService.tex
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revision 5866 by msdemlei, Thu Jul 25 08:13:30 2019 UTC revision 5867 by msdemlei, Wed Aug 26 11:14:48 2020 UTC
# Line 892  Line 892 
892    
893  The \xmlel{vs:Coverage} type summarily describes how the data served is  The \xmlel{vs:Coverage} type summarily describes how the data served is
894  distributed on the  distributed on the
895  sky, in energy, and in time.  For the energy coverage on the  sky, in energy, and in time.  
896  electromagnetic spectrum, there is a  
897  also qualitative classification in the \xmlel{waveband} element.  In addition, there is the \xmlel{waveband} element that originally
898    contained a qualitative indication of the location of the resource's
899    coverage on the electromagnetic spectrum.  As more resources cover
900    non-electromagnetic messengers, the element's meaning has somewhat
901    shifted, and it now admits values from an extendable vocabulary of
902    messengers\footnote{\url{http://www.ivoa.net/rdf/messenger}} that, for
903    instance, includes Neutrinos.
904    
905  Historically, the quantitative footprints were expected to be given in  Historically, the quantitative footprints were expected to be given in
906  the element of type \xmlel{stc:STCResourceProfile}.  As discussed in  the element of type \xmlel{stc:STCResourceProfile}.  As discussed in
# Line 988  Line 994 
994      <xs:element name="spectral" type="vs:FloatInterval" minOccurs="0"      <xs:element name="spectral" type="vs:FloatInterval" minOccurs="0"
995                maxOccurs="unbounded" />                maxOccurs="unbounded" />
996      <xs:element name="footprint" type="vs:ServiceReference" minOccurs="0" />      <xs:element name="footprint" type="vs:ServiceReference" minOccurs="0" />
997      <xs:element name="waveband" type="vs:Waveband" minOccurs="0"      <xs:element name="waveband" type="xs:token" minOccurs="0"
998                maxOccurs="unbounded" />                maxOccurs="unbounded" />
999      <xs:element name="regionOfRegard" type="xs:float" minOccurs="0" />      <xs:element name="regionOfRegard" type="xs:float" minOccurs="0" />
1000    </xs:sequence>    </xs:sequence>
# Line 1090  Line 1096 
1096  \end{description}  \end{description}
1097  \item[Element \xmlel{waveband}]  \item[Element \xmlel{waveband}]
1098  \begin{description}  \begin{description}
1099  \item[Type] string with controlled vocabulary  \item[Type] string: \xmlel{xs:token}
1100  \item[Meaning]  \item[Meaning]
1101                    A named spectral region of the electro-magnetic spectrum                    A name of a messenger that the resource is relevant for
1102                    that the resource's spectral coverage overlaps with.                    (e.g., was used in the measurements).  Terms must
1103                      be taken from the vocabulary at
1104                      http://www.ivoa.net/rdf/messenger.
1105                                
1106  \item[Occurrence] optional; multiple occurrences allowed.  \item[Occurrence] optional; multiple occurrences allowed.
   
 \item[Allowed Values]\hfil  
 \begin{longtermsdescription}  
 \item[Radio]  
                  wavelength >= 10 mm; frequency <= 30 GHz.  
                 
 \item[Millimeter]  
                  0.1 mm <= wavelength <= 10 mm;  
                  3000 GHz >= frequency >= 30 GHz.  
                 
 \item[Infrared]  
                  1 micron <= wavelength <= 100 micons  
                 
 \item[Optical]  
                  300 nm <= wavelength <= 1000 nm;  
                 
 \item[UV]  
                  100 nm <= wavelength <= 300 nm;  
                 
 \item[EUV]  
                  12 eV <= energy <= 120 eV  
                 
 \item[X-ray]  
                  0.12 keV <= energy <= 120 keV  
                 
 \item[Gamma-ray]  
                  energy >= 120 keV  
                 
 \end{longtermsdescription}  
1107  \item[Comment]  \item[Comment]
1108                    Observations using non-electromagnetic messengers should                    It is a bit unfortunate that the element is still called
1109                    not give a waveband in version 1.2 of VODataService.  It                    waveband when it is now also coverage non-electromagnetic
1110                    is expected that additional terms for these will be provided                    messengers.  It was deemed that this slight notional
1111                    in a future version.                    sloppiness is preferable to introducing new and
1112                      deprecating old elements.
1113                                
1114    
1115  \end{description}  \end{description}

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msdemlei@ari.uni-heidelberg.de
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