Summary of activities March 2015 - May 2015

100 - Management

  • First GENUS trimestral telecon on 12 of March 2015 to complement monthly telecons CU9 - GENIUS.

200 - User community

  • Costigan gave a talk on Gaia at University College Dublin (7th April). Also meet with Parameter Space (UCD, Dublin), who have been awarded the Geo Return contract to build a Gaia added value interface portal (GAVIP) for the archive.
  • Costigan attended the GAVIP System concept workshop at ESAC (14th April). Also in attendence were the Finish group (Space Systems) and Portuguese group (Fork Research) who will build advanced archive tools within the GAVIP framework.
  • YY attend Gaia CU3 AGIS meeting at Heidelberg, (http://wiki.cosmos.esa.int/gaia-dpac/index.php/CU3:Core_Processing:Meetings:AGIS_22#Agenda) and have a talk on Nano-JASMINE status. Gaia and Nano-JASMINE members share the situation.

300 - System design

T3.1 Technical Coordination

T3.2 Aspects of archive interface design

  • Web2.0 demonstrator enhanced to load (and keep loaded) archive metadata in the background as user adds archive to session context
  • Working on connecting up the "error bus" through interface layers to the end user to provide meaningful error messages on DQP, ADQL parser errors etc. and also to provide "heartbeat" indicating in-progress (for long queries) and provision of cancellation button.

T3.3 VO infrastructure

  • Continuing to lobby IVOA for improvements and enhancements to ADQL
  • Working to get enhancements and bug fixes to ADQL Parser merged back from forked version to the main branch version used by ESAC

T3.4 Data Centre collaboration

  • DQP components now compartmentalised into Virtual Machine containers ready for deployment (e.g. at ESAC)

T3.5 Data mining environments

  • Experiments and practical implementations with Docker seem to be providing a good Virtualised environmental infrastructure - planning Astronomy & Computing paper on this

400 - Data Exploitation

T4.2 - Visualization

T4.3 - Data Mining

  • Firsts tests as a demostration of a possible procedure to extract data from the Gaia Archive to be used be the Data Mininng framework.
  • Analisis on newly implemented MlLib algorithms on Spark, tested on non-Gaia data.
  • Work Package coordination telecons and 2 days meeting at ESAC facilities to agree on a WP development plan, tasks and responsibles.
  • New WP definition and responsibles.

T4.4 - VO tools and services

500 - Validation

T5.1 - Technical coordination

  • Participation to Genius telecon T2 (March 12) - Arenou
  • Organisation of 7 telecons with T5.2 - Arenou
  • Telecon with X-matching for a use of validation environment - Arenou
  • Participation to CU9/Genius telecon (April 13) - Arenou
  • Participation to CU9/Genius telecon 10 (May 19) - Arenou
  • Participation to telecon with GACS (May 22) - Arenou
  • Preparation of all the environment (management, software, auxiliary data) for the reception of TGAS preliminary solution

T5.2 - Definition of problem cases, validation scenarios and tools

  • Specified several tests to be implemented after the TGAS release - Findeisen
  • Made WP942 validation tests more portable between development and release environments - Findeisen
  • Implementation, testing, and debugging of TGAS validation tests, using input data in Gbin format - Findeisen
  • Organised development of StatisticalTools library to support validation - Findeisen
  • Implementation of CU9-Validation-Tools-IOC common tool - Findeisen

T5.3 - Simulation versus reality: from models to observables

  • Implementation of tests for validation of parallax and improvement of previously implemented tests.
  • Comparison of mock catalogue generated from a new version of BGM adapted and improved for modelling of bright stars with 9 < G mag < 13 (R.Moor, Barcelona Univ., A. Robin) with Tycho, RAVE, and AGISLab catalogue with the aim of optimizing validation methods and criteria.
  • Significant modification of validation code to implement magnitude and latitude dependent validation criteria.
  • Preparation and publication of the Software Release Note for WP943 validation package, GAIA-C9-TN-IUOB-HZ-001: delivery of prototype of model-based validation tools D5.2, May 19)

T5.4 - Confronting Gaia to external archives

  • Developed complete internal structure of WP944: crossmatches, tables and objects formats and management, global tools, global running,... - Babusiaux, Ruiz-Dern
  • Interaction and discussions with WP946 to make internal tools developed in WP944 available to other WP in Validation - Blanco-Cuaresma, Babusiaux, Ruiz-Dern
  • Subdivision, after discussion, of WP944_Val_030_005 (parallax Zero-Point) into two tests: WP944_Val_030_005 (distant stars) and WP944_Val_030_006 (very distant stars), because of the different analysis complexity needed for first releases of TGAS/Gaia and later releases - Arenou, Babusiaux, Ruiz-Dern
  • Implemented code to run R scripts from Java - Babusiaux
  • Preparation and selection of new small catalogues and groups of stars to confront with Gaia data, such as Hipparcos LMC/SMC (among others) - Turon, Babusiaux
  • Pritority 1 tests for TGAS ready and operational: Comparison to Hipparcos astrometry (WP944_Val_030_003), Parallax Zero-Point using very distant stars (WP944_Val_030_006) - Babusiaux, Ruiz-Dern
  • Developing tests of priority 2 and others: WP944_Val_010_003 (Issues for specific stars), WP944_Val_030_004 (high proper motions) - Babusiaux

T5.5 - Data demining: outlier analysis

T5.6 - Transversal tools for special objects

  • Variability and time series
    • WP946 presentation at the 20th CU7 meeting (20–22 May 2015, Lisbon) - S. Blanco-Cuaresma, L. Eyer
    • Provided a list of Hipparcos variable stars with Tycho identifiers for the validation WP - S. Blanco-Cuaresma
    • Tests adapted to the validation tools version 5.1 - S. Blanco-Cuaresma
    • Tests improvements to re-use WP944 code - S. Blanco-Cuaresma
    • First tests for TGAS where we cross-match with Hipparcos, calculate difference in parallax, separate constant from variable stars and test that: - S. Blanco-Cuaresma
      • Both groups have a mean parallax difference of zero (Student's t-test)
      • Both groups have the same mean parallax difference (Student's t-test for 2 samples)
      • Both groups have the same variance for parallax difference (F-test)
      • Both groups have the same distribution (Kolmogorov–Smirnov test)

600 - Support

T6.2-Simulated Catalogue

.

T6.3-Science Alerts testbed

700 - Dissemination

T7.1 - Coordination of dissemination activities

T7.2 - Community portal infrastructure

T7.3 - Community portal, outreach and academic activities

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Topic revision: r22 - 2015-06-25 - RichardSmart
 
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