TESS is dated to an ancient collision with our galaxy, A single bright star in the constellation of the Indus, seen from the southern hemisphere, reveals a new understanding of the ancient collisions that our Milky Way galaxy experienced early in its history with another smaller galaxy called Gaia-Enceladus.

new approach to applying the forensic characteristics of a single, bright star called? Indie as a Milky Way history examiner.

The star was matured using its natural vibrations (asteroseismology), obtained from data from the newly launched NASA Transit Planet Satellite (TESS). TESS was launched in 2018 and is researching stars in most of the sky in search of planets orbiting and studying the stars themselves.

Combined with data from the European Space Agency’s ESA mission, detective stories reveal that this ancient star was born early in the life of the Milky Way, but the Guy-Enceladus collision changed its movements in our galaxy.

From the movement? Indy was affected by the Guy-Enceladus collision, the collision must have occurred after star formation. Therefore, we can use the age determined by asterosism to set a new limit for the time of the Enceladus Style event.

Because we see so many stars from Gaia-Enceladus, we believe that this has a big impact on the evolution of our galaxy. This is an important step to understand when this collision occurs, to understand that this is a very hot topic in astronomy today.

This study shows the potential of asteroseismology with TESS and what might happen if someone has a lot of avant-garde data for bright stars. ”

This study clearly shows the great potential of the TESS program to bring together a rich new understanding of the stars that are our closest neighbors in the Milky Way.

This research was funded by the Scientific and Technology Works Council and the European Research Council as part of the asterochronometry project.