GhoSST (formerly STSP)

1. Laboratoire de Planétologie de Grenoble (LPG)(will merge as « Institut de Planétologie et d’Astrophysique de Grenoble » – IPAG - in 2011) GhoSST (formerly STSP) “Grenoble Astrophysics and Planetology Solid Spectroscopy and Thermodynamics" database service http://ghosst.obs.ujf-grenoble.fr GhoSST structure is under development (Europlanet RI + VAMDC) Involvement in VAMDC: Aims : 1) develop molecular physics data model for solids 2) build the molecular solids physical properties databases - Organization of a group of European data publishers and users (with Europlanet RI) Discuss the solid datamodel: spectroscopy (2010) and physical properties (2011)  1st work meetings (13 january 2010) with data producers Solid spectroscopy datamodel - expand the datamodel to other types of spectroscopic data and solids (2009-2010) - implement on the GhoSST database (2010) - implement some tools on the GhoSST database (2010) - validate and add sets of spectroscopy data to GhoSST database (2009-2011)

2. To be done in FP7 ... • Laboratory spectroscopic databases for solids : • - Develop a generic database infrastructure for spectroscopic data of solids. • - Feed new databases covering : • - UV-to-FIR transmission spectroscopy of ices and organics (extend), • - UV-to-NIR bidirectional reflection spectroscopy of solid surfaces (planetary analogue materials: ices and hydrated minerals) • - NIR-MIR Emission spectroscopy of minerals (IPR/DLR-Berlin) • - Integration to IDIS : production ofinterfaces for interoperability JRA-4 : Transforming IDIS into a Planetary Virtual Observatory Task “New databases”

3. Analysis of surfaces and aerosols spectra of solar system objects • identifications : band position, width and intensity (lab spectra, band list) • Composition and physical state : - aerosols or icy surfaces : radiative transfert models (optical constants) - planetary surface : comparison, decomposition (lab reflection spectra) Triton Pluto

4. GhoSST : Main Functions  in development • Database administration interface • Search engine • Tools : • interactive visualisation, comparisons • Spectral convolution, unit conversions • Data format converter, ... • Data delivery system (files, figures, references) • User profile http://ghosst.obs.ujf-grenoble.fr

5. Solid Spectroscopy Data Model (SSDM) B.Schmitt Laboratoire de Planétologie de Grenoble CNRS / UJF What are the important parameters in order to describe Solid Spectroscopy ? F-VAMDC 12 Dec 2008

6. GhoSST: Prototype Data model (transmission spectroscopy of molecular ices) - instrument - sample - spectra - band list - references  select the relevant spectroscopic and solid parameters for astrophysicists / planetologists  To be extended (other solids, other spectroscopies)

7. Instrument parameters • Measurement technics • Spectral / Angular / Spatial • range • resolution • sampling

8. Sample- Layers- Materials- Constituents : Moleculesor minerals Instrument parameters

9. Products : Spectra (levels 1 to 4) - Absorbance spectra (level. 2) Optical constants (level. 4)

10. Instrument parameters Spectra- Transmission spectra- Normalized absorbance- Absorption coefficients- Optical constants

11. Band list

12. Products : Band Lists (level 5)(positions, intensities, modes, …) Bands of CH4 ice

13. Band list DM1) Solid (molecular case) • Molecule (or isotope) • 2nd molecule • 1st molecule Proportion • Solid familly (molecular, mineral, …) • Compound type (pure, molec. mixt., clathrate, …) • Phase type (cristalline, amorphous solid, liquid, …) • Phase (Ic, Ih, IV, …) • Sample temperature • Annealing temperature and time • Gas pressure and composition

14. Band list DM 2) Spectroscopy • Frequency [+ uncertainty] • Width (FWHM) [+ uncertainty] • Peak Intensity (abs. coeff., or k) [+ uncertainty] • Integrated intensity (abs. coeff., or k) [+ uncertainty] • Band strength (vvs to vvw) • transition mode (ex: [(2,1),(1,2),(3,3)]) • mode type (ex: O-H stretching) • Reference list (1st measurement/attribution) + analyzed frequency range ?

15. Development of band list sub-database and tools Band lists • tables of : • positions, • width, • Intensities (peak, integrated) • vibration modes (+ type) • references  Data Model • ~ 500 bandes sur 6 molécules (N2, CO, CO2, CH4, C2H6, SO2) • Data feeding interface, • Search engine • Visualisation, delivery

16. Data model extensions • to describe : • additionnal instrument techniques • attributes to describe • Bidirectional / Biconic reflectance spectroscopy • Emission spectroscopy • IR + Raman + fluorescence micro-spectroscopies • new sample types ? • new spectra types or spectral products - additional types of materials • Minerals / Rocks • Which classification to use ? • Which attributes to completely characterize one mineral ? • Complex organics • How to characterize a complex synthetic or natural organic solid ?

17. Data model extensions • Data model format evolution - Conversion in PDS standards and format ? (PDS4 ?) - compatibility ? • Organization of data model evolution - Organization of a group of European data publishers and users (VAMDC and Europlanet RI) - Development of the solid data model: - Spectroscopy (2010) - Physical properties (2011) (+ ASOV + PCMI) 1st work meeting (13 january 2010) in Grenoble (LPG) with european data producers (~10)