Transients/Variable Stars

Chair(s): Federica Bianco (New York University) & Rachel Street (LCO)

TVS Official webpage here

LSST TVS RoadMap Document here

The LSST Transients and Variable Stars Collaboration focuses on the transient sky, including a large and diverse range of phenomena: variable events, periodic or not, explosive and eruptive transients, and geometric transients (e.g. eclipsing binaries and planets). Variability is a tell tale of the nature of the objects observed, but it also enables galactic studies (the mapping of the galactic structure), extragalactic studies (the characterization of the intracluster medium), and cosmological studies. Because of their physical and phenomenological diversity, the object we study span a wide range of timescales and present themselves in a range of brightnesses and colors. We work to understand and maximize the potential of LSST in the exploration of the variable and transient sky, one of the 4 science drivers of LSST. LSST also holds great potential for discovery of new transient phenomena, especially at the very short and very long time scales.


  • Cosmological
  • Classification/Characterization
  • Distance Scale
  • Fast Transients
  • Galactic
  • Interacting Binaries
  • Magnetically Active Stars
  • Microlensing Subgroup
  • Multiwavelength Characterization/Counterparts
  • Pulsating Variables
  • Supernovae Subgroup
  • Tidal Disruption Events
  • Transiting Planets

Task Forces

Science Platform Evaluation and Stack Club    Spokesperson: Sara Bonito, INAF-Observatory of Palermo, Italy

LSST Commissioning   Spokesperson: Markus Rabus, PUC, Chile

Characterize a community-broker interface functionality   Spokesperson: Markus Rabus, PUC, Chile

Crowded Field Photometry  Spokesperson: Kelly Hambleton

Deep-drilling fields and mini-surveys proposals planning Spokesperson: Sara Bonito, INAF-Observatory of Palermo, Italy

Review variability characterization parameters   Spokesperson: Maria Isabel Carnerero Martin, INAF-Observatory of Torino, Italy