AstroCat – A Web-based interactive astronomical catalog Stefan Dreizler Institute for Astrophysics Georg-August-University, Göttingen & Ralf Stockmann Goettingen State and University Library Goettingen Digitization Centre (GDZ) CNI Spring 2006 Task Force Meeting Interactive Catalog Introduction Motivation AstroCat CVcat Demo Libraries
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AstroCat – A Web-based interactive astronomical catalog
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AstroCat – A Web-based interactive astronomical catalog
Stefan DreizlerInstitute for Astrophysics
Georg-August-University, Göttingen&
Ralf StockmannGoettingen State and University LibraryGoettingen Digitization Centre (GDZ)
CNI Spring 2006 Task Force Meeting
Interactive Catalog
Introduction
Motivation
AstroCat
CVcat
Demo
Libraries
Outline
• Introduction• Motivation• AstroCat• CVcat• Demo• Connecting scientists and libraries
Interactive Catalog
Introduction
Motivation
AstroCat
CVcat
Demo
Libraries
Astronomical Catalogs - History
• First catalog by Hipparchos (180-125 b.Chr.) 1022 stars (position and brightness)
• Continued by Ptolomäus and numerous astronomers into modern times
• Argelander (1799-1875) all (northern) visible stars, a survey using a 10 cm telescope (22000 objects) variable stars
• Catalog by Messier (1730-1817) nebulous objects not to be confused with comets (107 objects)
Interactive Catalog
Introduction
Motivation
AstroCat
CVcat
Demo
Libraries
Astronomical Catalogs - Present
• Today: 6453 catalogs listed e.g. @ Strasbourg Astronomical Data Center
• Bibliographic data base with 4.6 M entries @ Smithsonian/NASA Astronomical Data Center
• Preprint Server, e.g. astro-ph @ arXiv
• Several Virtual Telescope Projects, e.g. MAST (Multi Mission Archive at Space Telescope)
Interactive Catalog
Introduction
Motivation
AstroCat
CVcat
Demo
Libraries
Motivation for interactive catalogs
From data to paper
• Raw data Data Archive• Reduced data Data Archive ?• Derived quantities• Publication Bibliographic Archive
Interactive Catalog
Introduction
Motivation
AstroCat
CVcat
Demo
Libraries
TRIPP
Current and Future Challenges
• Dedicated survey telescopes
• Larger CCD cameras
• E.g. Pan-STARRS with few Tbytes/night
Interactive Catalog
Introduction
Motivation
AstroCat
CVcat
Demo
Libraries
Motivation for interactive catalogs
From paper to (meta-)data
• Statistical analysis of available data• Planning of observations
• Data base query of derived quantities
Interactive Catalog
Introduction
Motivation
AstroCat
CVcat
Demo
Libraries
Requirements
• Complete• Error free
• Up to date• citable
• Catalog from the community for the community Web based Interactive
• AstroCat provides a platform for the implementation of such catalogs
Interactive Catalog
Introduction
Motivation
AstroCat
CVcat
Demo
Libraries
Technical details
• Linux• PostgreSQL• PHP5• XML (AstroCatML)
Interactive Catalog
Introduction
Motivation
AstroCat
CVcat
Demo
Libraries
The Team
• Original Idea: Boris Gänsicke, Jens Kube (Institute for Astrophysics, Göttingen)
• Movement towards a more general project in library context: Klaus Beuermann (IAG), Elmar Mittler (State and University Library Göttingen)
• Design and definition: Fabian Euchner, Alexander Pollmer
• Extended phase: Stefan Dreizler, Ralf Stockmann
• Implementation CVcat: Fabian Euchner, Alexander Pollmer, Boris Gänsicke (now: Univ. of Warwick)
Interactive Catalog
Introduction
Motivation
AstroCat
CVcat
Demo
Libraries
CVcat – a catalog of cataclysmic variables
Pspin=833 sec
Input: What’s known
• Astronomical coordinates• Object name(s) general astronomical• Brightness• Classification
• Stellar parameters CV special• System parameters