MIS: science with VO

08/11/2005 M.L. Dubernet, Obernai - VO School - Introduction et BDD de Physique

MIS: science with VOContributions from

F. Boone, C. Bot, J.M. Désert, M.L. Dubernet,F. Le Petit, A. Walters


Approche Multi-Disciplinaire

Observations/AnalysesSpectres - ImagesModélisations AstrophysiquesPhysico-Chimie des processus microscopiques

Calculs théoriquesRésultats expérimentaux

Thèmes:Physico-Chimie matière proto-stellaire et proto-planétaireSpectroscopie de matière interst. Dans les galaxiesComplexité moléculaireCaractérisation, évolution physico-chimie des grains interstellaires

Herschel, ALMA, APEX, IRAMISO, SpitzerVLT, CFHTHST, FUSE


Pre – VO work for Spectral Analysis

Assessment of needs and qualityCodes: PDR, radiative transfer for waterSpectroscopic data, Collisional data: working groups for needs Reactive processes: in progress

Build the relevant services including quality control

Basecol: collisional dataCDMS/JPL: MoUCode PDR (cf talk of F. Le Petit)

Design interfaces: CASSIS (A. Walters), ASAP (F. Boone)


Scientific casesAnalyse d’images multi-longueur d’onde du MIS, émission gaz/poussière dans le petit nuage de Magellan: Caroline BotCodes du MIS dans le VO

Code de simulation: Franck Le PetitBDD physique: M.L. DubernetBDD Spectres FUSE: Jean Michel DésertSoftware CASSIS: Adam WaltersSoftware ASAP: Frédéric Boone


Spectral Line Access

Paris Observatory and ESA/ESAC

ML Dubernet, P. Osuna, M. Guanazzi, J. Salgado, E. Roueff

MLD acknowledges support from VO-France, MDA project (F. Genova), Paris Observatory


Project Overview (1)

Access Atomic/Molecular DB starting with line listsTheoretical (measured or calculated) DBObserved line lists DB

Necessary to access complementary information in order to interpret spectra or model astrophysical media: excitation rate coefficients, etc..Clients: stronger evolution towards public software packages for spectral analysis and on line codes for astro. Simulation

Shared, structured, complete and documented access to AM DBStandardisation O/I, queries, ressources ID


Overview (2)

Numerous DB are availableAtomic lines: NIST DBs, Kurucz's CD-ROM, Atomic Line List of P. Van Hoof, TOPbase, Kelly Atomic Line DB, VALD, MCHF/MCDHF Collection, D.R.E.A.M, KAERI AMODSMolecular Lines: JPL Spectroscopic DB, CDMS, HITRAN, GEISA, NISTOther DB: IEAE, NIFS, CHIANTI, UMIST, BASECOL, small compilationsObserved databases: ATOMDB, NIST, ...

Identification of Pbs Different DB have similar datasets

DB have different levels of updateLengthy to identify origin of datasets, find all relevant description of data

Useful data for a single astrophysical application are dispersed in various DB

No homogeneous description of data


Access to Lines: Data Model

Based on fundamental physics, current databases and needs in astrophysicsCurrent DM is centered around line for atom and molecules: electronic, vibrational, rotational transitions (couplings)

Allows for identification ofChemical SpeciesLevel -->Quantum State-->Quantum numbersOrigin and modification of Line

Can be used to model other processes involving transitions because a line corresponds to a transition between two levelsCould be extended to nuclear physics?


Document status and perspectives

Current version: 0.2 (26/9/2005)

A discussion on several – albeit mostly minor – points is ongoing

Short-term goal: Version 0.3 - agreed by mid-November - will be circulated to the DM group, as well as to atomic and molecular astrophysicists for comments

Ultimate goal: achieve the status of a proposed recommendation by the next InterOp meeting


Structure

LineLevel

QuantumState

QuantumNumber

Process

Model Model Model

Species

Environment

Chemistry


Access : Query Parameters SLAP : Simple Line Access Protocol

J. Salgado, P. Osuna, M. Guainazzi, I. Barbarisi, M.L. Dubernet

Currently, version 0.1

By wavelength_min, _max, _midBy species: Fe I, H20, ...

By type of levels (vibration, rotation, ..) Combined with associated processes

Would we allow search of other processes independently of lines? (next version?)


Access to Lines: questionsRegistry parameters?

Wavelength rangeKeywords = energies, atoms or molecules, processes

Practically how should we proceed ?Some DB will implement VO, otherwise create VO providersCreate Web Services and vizualization tools with filters


Currently ImplementingBASECOL database: excitation rate coefficients of molecules (rotation, vibration)

Numerical data, documentation, referencesWeb service VOTable outputErrors (for various T and transitions)

Tools for matching Basecol and CDMS/JPL spectroscopic database (necessary for carrying out science)


Summary Exchange standards for atomic & molecular standardsImplementation for specific databaseTools to handle existing dataRegistries Still not enough to carry out science

Services are needed to complete data sets: using cheap approximations, extrapolations next step for Basecol (only as a webservice) should be provided for other processes


Contacted peoplePhysicists, Databases,

AstronomersGEISA: N. Husson-Jacquinet

HITRAN: L. Rothman

CDMS: S. Schlemmer

JPL: J. Pearson

UMIST: T. Millar

CHIANTI: P. Young

DREAM: P. Quinet

TOPBase: C. Zeippen

NIST: F. Lovas, Y. Ralchenko

NIFS: T. Kato

IEAE: B. Clark

KAERI: Y.-J. Rhee

ATOMDB: N. BrickhouseD. SchwenkeJ. TennysonA bunch of french spectroscopistsJ. Aboudarham (solar)B. Plez (stars)J. Cernicharo (ISM)F. Valdes (calibration package)

Documents

MIS: science with VO