Applications Working Group : June 2025

During this talk we will present pyVAMDC, a new Python library to extract, in an interoperable way, data from the main databases providing atomic and molecular data for astronomy and astrophysics.We will show the key concept behind this library (architectural choices) and will explain, through working example, how users may adopt it.

VOParquet Note and implementations

The VOParquet convention that describes associating rich VOTable metadata with bulk data in Parquet format was published as an IVOA Note in January 2025. I will briefly recap the content of this Note, and report current implementations of it, as well as some utility tools available in STILTS for validating, debugging and tuning files written using the VOParquet convention.

TBD

HiPS3D: Proposal to extend the IVOA HiPS standard to cubic data

The HiPS - 'Hierarchical Progressive Survey' - method was standardized by IVOA in 2017. Based on a regular hierarchical division of the sky, it provides an effective solution to the problem of visualizing and even manipulating large-scale surveys. With the growing use of observing equipment generating cubic data, such as SKA or Rubin, the HiPS standard needs to evolve to better address this additional dimension, in terms of both frequency and time. We will present the CDS work on this subject, based on results obtained on a prototype version of Hipsgen - a HiPS generator - and Aladin Desktop - a HiPS client/viewer. We will describe the evolutions that might be necessary to the HiPS standard in order to generalize it to cubic observations.