the australian virtual observatory (a.k.a. eastronomy australia) ray norris csiro atnf
TRANSCRIPT
The Australian Virtual Observatory(a.k.a. eAstronomy Australia)
Ray Norris
CSIRO ATNF
Overview
• Aims – what can Australia contribute to the IVO– Data– Techniques
• Status
• The role of small countries in the IVO
Australian data resources
• 2dF– Galaxy survey: redshifts and spectra for
250 000 galaxies up to z=0.3, bJ=19.45
– Quasar survey: redshifts and spectra for 30 000 quasars up to z=3.0, bJ=21
Australian data resources
• 2dF– Galaxy survey: redshifts and spectra for
250 000 galaxies up to z=0.3, bJ=19.45
– Quasar survey: redshifts and spectra for 30 000 quasars up to z=3.0, bJ=21
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CIV
CIII]MgII
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Australian data resources
• 2dF
• HIPASS– Surveyed all galaxies in HI (unbiased) up to
12000 km/s– Increased HI-surveyed volume by a factor of
100– Surveyed Zone of Avoidance– Doubled the number of known pulsars (~1000)
Australian data resources
• 2dF
• HIPASS– Surveyed all galaxies in HI (unbiased) up to
12000 km/s– Increased HI-surveyed volume by a factor of
100– Surveyed Zone of Avoidance– Doubled the number of known pulsars (~1000)
Australian data resources
• 2dF
• HIPASS– Surveyed all galaxies in HI (unbiased) up to
12000 km/s– Increased HI-surveyed volume by a factor of
100– Surveyed Zone of Avoidance– Doubled the number of known pulsars (~1000)
Australian data resources
• 2dF
• HIPASS
• Macho– 113 000 images on 8*2048*2048 CCDs– 8-year Light curves for 8 million stars in LMC– 8-year Light curves for 10 million stars in Bulge– Variable star catalogue, etc.
Australian data resources
• 2dF
• HIPASS
• Macho– 113 000 images on 8*2048*2048 CCDs– 8-year Light curves for 8 million stars in LMC– 8-year Light curves for 10 million stars in Bulge– Variable star catalogue, etc.
Australian data resources
• 2dF • HIPASS• Macho• SUMSS
– survey of entire sky south of Dec -33o at 843 MHz
– Sensitivity ~ 1mJy rms
– Resolution ~ 43 arcsec
– Similar in resolution and sensitivity to NVSS
Australian data resources
• 2dF • HIPASS• Macho• SUMSS
– survey of entire sky south of Dec -33o at 843 MHz
– Sensitivity ~ 1mJy rms
– Resolution ~ 43 arcsec
– Similar in resolution and sensitivity to NVSS
Australian data resources
• 2dF • HIPASS• Macho• SUMSS• ATCA data archive
– 10 years of radio synthesis observations– Complementary to VLT, Gemini, ALMA– All data older than 18 months currently available on
request from www archive
Australian data resources
• 2dF • HIPASS• Macho• ATCA data archive
– 10 years of radio synthesis observations– Complementary to VLT, Gemini, ALMA– All data older than 18 months currently
available on request from www archive
HDF-SWFPC field
7 Jy rms
Goals of eAstronomy Australia• Make survey and archive data from
Australian telescopes available to all IVO users– All data listed here (and more!) is planned to be
put into IVO
• Set up datagrid and compute grid to give Australian astronomers access to IVO resources
• Help develop techniques, protocols, etc for the IVO
What are the elements of the IVO?
IVOtool
Interchange format
User
Translator
Database
Capability database
Telescope proposal system
Translator
Processor
Database
Instruction format
Translator
Simulation
Theory/model
Example element of eAstronomy Australia
Build a pipeline processor (running aips++) to process radio synthesis data from ATCA archive on the fly– User can choose parameters of image
• Field centre• Field size• Optimise algorithm for science question being asked
– Can use latest version of calibration algorithm– Expert users can tweak parameters
Other elements of eAstronomy Australia
• Build a pipeline processor (running aips++) to process radio synthesis data from ATCA archive on the fly
• Incorporate significant Australian datasets• Working with ICT scientists (e.g. in CSIRO Maths
& Information Science), develop Grid Computer network
• Link into astrophysical theory centres• Link into SKA developments
Current status of eAstronomy Australia
• Identified in Australian “decadal review” as high priority
• Several funding proposals (ARC, CSIRO) in pipeline for different aspects
• Now in embryonic stage
• Expect to start in late 2002
Australian strengths
• Several significant projects providing data of interest to international community
• Unusually tight links and collaboration between radio and IR/optical communities
• Good links between astronomical community and ICT research community
Australian weakness
• Small size compared to US, Europe
• Distance between Australia and everywhere else
Principles of engagementof a small country in a
large international project1. Identify any strengths or special roles the
country may have in the international context2. Identify what the major international partners
gain from the involvement of the small country3. Identify what the small country gains from its
involvement in the project4. Identify a niche where the country can
realistically contribute in a significant way 5. If any of 1-4 cannot be identified, then small
country should not participate in the project
Principles of engagementof a small country in a
large international project1. Identify any strengths or special roles the
country may have in the international context2. Identify what the major international partners
gain from the involvement of the small country3. Identify what the small country gains from its
involvement in the project4. Identify a niche where the country can
realistically contribute in a significant way 5. If any of 1-4 cannot be identified, then small
country should not participate in the project
Data availability,optical/radio links,astronomy/ICT links
?
Data, technical input
Partnership, linkages
What is the niche in which Australia can
best contribute to the IVO?