# The Hubble Catalog of Variables

## TL;DR

The Hubble Catalog of Variables (HCV) project aims to identify variable sources in the Hubble Source Catalog using algorithms that analyze lightcurve features, with results to be publicly released and regularly updated.

## Contribution

This work develops a new set of algorithms for detecting variable sources in the Hubble Source Catalog, including a pipeline for ongoing updates.

## Key findings

- First release of HCV will be available at MAST and ESA archives.
- Algorithms successfully identify variable sources in Hubble data.
- Pipeline enables future updates with new HSC releases.

## Abstract

The Hubble Catalog of Variables (HCV) is a 3 year ESA funded project that aims to develop a set of algorithms to identify variables among the sources included in the Hubble Source Catalog (HSC) and produce the HCV. We will process all HSC sources with more than a predefined number of measurements in a single filter/instrument combination and compute a range of lightcurve features to determine the variability status of each source. At the end of the project, the first release of the Hubble Catalog of Variables will be made available at the Mikulski Archive for Space Telescopes (MAST) and the ESA Science Archives. The variability detection pipeline will be implemented at the Space Telescope Science Institute (STScI) so that updated versions of the HCV may be created following the future releases of the HSC.