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Spectroscopic lines in the VO context: IVOA model and Access Jes ú s Salgado

Spectroscopic lines in the VO context: IVOA model and Access Jes ú s Salgado Pedro Osuna, Matteo Guainazzi, Isa Barbarisi ESA/VO - European Space Astronomy Centre (ESAC). About Spectral Line Access.

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Spectroscopic lines in the VO context: IVOA model and Access Jes ú s Salgado

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  1. Spectroscopic lines in the VO context: IVOA model and Access Jesús Salgado Pedro Osuna, Matteo Guainazzi, Isa Barbarisi ESA/VO - European Space Astronomy Centre (ESAC)

  2. About Spectral Line Access • There is a scientific need to have access to spectral line databases in the VO. Many science cases could make use of this kind of access • Pros: Already existing services • Cons: Complex scientific issues. No standards. • It was agreed during the interop meeting in Kyoto (2005) to start the necessary work in this line • ESAVO and VOFrance took action. Three activities were started in coordination. Line Data Model document, Simple Line Access Protocol and test implementation (both server –IASD- and client side –VOSpec-) • Atomic and Molecular Lines Data Model v0.5, ML.Dubernet, P.Osuna, M.Guainazzi, J.Salgado, E.Roueff • Simple Line Access Protocol v0.5, J.Salgado, P.Osuna, M.Guainazzi, I.Barbarisi, ML.Dubernet, D.Tody

  3. Line Data Model (I) • Intended to support laboratory data, as well as databases of observed lines at any wavelength • Organized around the concept of Line, defined as the result of a transition between two Levels (initial/final) • This concept encompasses both bound-bound, and free-bound transitions • Levels are characterized by a series of attributes, organized in classes • Species (the properties of the atom/molecule they belong) • QuantumState/QuantumNumber (describing the quantum states of the initial/final level) • It shall be possible to describe processes which generate lines, or modify their observational properties in astrophysical plasmas

  4. Line Data Model (II)

  5. Pre-SLAP era Many on-line spectral line search services extensively used by scientists. All of the services have different form panels. Form Query Panel Lines Database Form Query Panel Client Lines Database Form Query Panel Lines Database

  6. SLAP Overview A SIAP-like URL service, would allow an easy implementation for all spectral line providers Form Query Panel SLAP Layer Lines Database Client SLAP Layer Lines Database VOTable, one spectral line per row Form Query Panel SLAP Layer Lines Database λ range is compulsory

  7.  <RESOURCE type="results"> <DESCRIPTION>IASD Simple Line Access Service</DESCRIPTION> <INFO name="QUERY_STATUS" value="OK"/> <PARAM name="INPUT:WAVELENGTH" ucd="em.wl" utype=”ldm:Line.wavelength” value="30"> <DESCRIPTION> Specify the wavelength spectral range. To be specified in micrometers. This wavelength will be interpreted as the wavelength in the vacuum of the transition originating the line </DESCRIPTION> </PARAM>  …………………………………….. <PARAM name="INPUT:OBSNO" ucd="obs.id"> <DESCRIPTION> Specify the ISO observation number where this line has been identified </DESCRIPTION> </PARAM> …………………………………….. FORMAT=METADATA output http://esavo02.esac.esa.int:8080/slap/jsp/slap.jsp?WAVELENGTH=5.1E-6/5.6E-6 http://esavo02.esac.esa.int:8080/slap/jsp/slap.jsp?FORMAT=METADATA

  8. SLAP server implementations • SLAP Server Name: IASD • Type: Observational • Publisher: ESA • Service Description: SLAP Access to ISO Astronomical Spectral Lines Database • Contact: ESA-VO team • Spectral Coverage: IR • Number of Records: 300 transitions • SLAP Name: LERMA • Type: Theoretical • Publisher: Observatoire de Paris • Service Description: LERMA SLAP access to the CDMS and JPL molecules correlated to the Basecol database • Contact: N. Moreau & M.L. Dubernet • Spectral Coverage: millimetric, sub-millimetric • Number of Records: 37500 transitions • Client implementation: yes (N.Moreau)

  9. SLAP server implementations • SLAP Server Name: NIST • Type: Theoretical • Publisher: National Institute of Standards • Contact: Yuri Ralchencko • Service Description: SLAP Access to NIST Atomic Spectra Database • Spectral Coverage: Multiple Coverage • Number of Records: 142000 transitions !! • SLAP Name: CIELO • Type: Observational • Publisher: ESA • Service Description: SLAP Access to XMM-Newton observed spectral lines from CIELO Database • Contact: M. Guainazzi & the rest of ESA-VO team • Spectral Coverage: X-Ray • Number of Records: 2700 transitions

  10. ALMA Spectral Line Catalogue • ALMA Archive Group at The University of Manchester: Stewart Williams, Andrew Markwick-Kemper, Sandra Etoka & Gary Fuller • ALMA requires a list of spectral line lines: Spectral Line Catalogue (SLC) • SLC adopts the IVOA Atomic and Molecular Line Data Model • Well placed to query and server lines in a complex Spectral Line Access protocol in the future • Client implementation: Splatalogue (Markwick-Kemper)

  11. VOSpec Contact points: Barbarisi I., Osuna P., Salgado J., ESA-VO • Main role: A tool for handling Virtual Observatory compliant Spectra • Functionalities: • SLAP reference implementation • Provides a choice between all SLAP servers • Select wavelength ranges on Spectral displayer • Superimpose line location on SSAP spectra • Future plans: • Line data model exploitation • Use of server dependent input parameters

  12. VOSpec in action VOSpec_SLAP.EXE

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