ESO

Image of the star VY Canis Majoris captured by the SPHERE instrument on VLT (Photo ESO)

An article published in the journal “Astronomy & Astrophysics” describes a study on the star VY Canis Majoris, one of the largest in the Milky Way. The SPHERE instrument installed on ESO’s VLT (Very Large Telescope) allowed to obtain very detailed images of this star making it possible to study the dust that surrounds it and the considerable mass it loses in time ejecting it.

The early massive galaxies just discovered marked in red circles (Image ESO/UltraVISTA team. Acknowledgement: TERAPIX/CNRS/INSU/CASU)

An article published in the journal “Astrophysical Journal” describes the discovery of the oldest giant galaxies carried out thanks to ESO’s VISTA (Visible and Infrared Survey Telescope for Astronomy) telescope. A team of astronomers led by Karina Caputi of the Kapteyn Astronomical Institute at the University of Groningen, Netherlands, identified galaxies that existed when the universe was between 750 million and 2.1 billion years old. This result is surprising because the birth of galaxies so massive wasn’t expected so soon.

Artistic impression of the VFTS 352 stars (Image ESO/L. Cal├žada)

An article published in “Astrophysical Journal” describes a research on a couple of very special stars. The binary system called VFTS 352 is in fact composed of two stars that are touching and these stars are the largest discovered to date in this situation. An international team of astronomers used ESO’s VLT (Very Large Telescope) to observe this double star, also to try to understand what kind of development could have.

Images of the dust disk around the star AU Microscopii taken by the Hubble Space Telescope and SPHERE (Image NASA, ESA, ESO, A. Boccaletti (Paris Observatory))

An article just published in the journal “Nature” describes the discovery of mysterious ripples across the disk of dust surrounding the star AU Microscopii, or AU Mic. Through SPHERE, an instrument mounted on ESO’s Very Large Telescope, a team led by Anthony Boccaletti, LESIA (Observatoire de Paris/CNRS/UPMC/Paris-Diderot), France, discovered these structures never seen before and yet to be explained.

The Southern Owl Nebula planetary nebula (Photo ESO)

It’s nicknamed the Southern Owl Nebula and its an extraordinarily symmetrical and round planetary nebula. Using ESO’s VLT (Very Large Telescope) in Chile now it’s been possible to capture an extraordinary image of this dying star and what’s left around it. The result gives the impression of a sphere lit up like a ghost in the darkness of space.