An article published in the journal “Science” reports a study on the HD 148937 system, a binary system surrounded by a double nebula known as NGC 6164/6165. A team of researchers used the PIONIER and GRAVITY instruments mounted on ESO’s VLT Interferometer (VLTI) in Chile and archival data from the FEROS instrument at the La Silla Observatory, also an ESO’s telescope in Chile, to collect the data necessary to conclude that it was originally at least a triple system and at some point two of the stars merged. It was a violent event that created the cloud of materials around the system.

An image captured by the OmegaCAM instrument mounted on ESO’s VST in Chile shows details of the nebula cataloged as Sh2-284. It’s part of the VST Photometric Hα Survey of the Southern Galactic Plane and Bulge (VPHAS+), a survey that included over 500 million objects in the Milky Way to improve our understanding of stars’ life cycles. Sh2-284 is a sort of star nursery whose shape was compared to that of a cat’s face and for this nicknamed “smiling cat”.

An article published in the journal “Astronomy & Astrophysics” reports an overview of the results of the VISTA Star Formation Atlas (VISIONS) survey, which aimed to observe star formation regions visible from the southern hemisphere. A team of researchers assembled more than one million infrared images captured over five years by ESO’s VISTA telescope in Chile to create an atlas of five stellar nurseries in the cosmic neighborhood. This is one of the surveys focused on star formation processes with the aim of better understanding its various phases.

ESO has released an image of the Cone Nebula captured using the FOcal Reducer and low dispersion Spectrograph 2 (FORS2) instrument mounted on the Very Large Telescope (VLT) as part of the 60th-anniversary celebrations of this astronomical research organization’s creation. The convention to create the European Southern Observatory was signed on October 5, 1962, and led to the construction of state-of-the-art telescopes, also in collaboration with other organizations. 60 years of astronomy are also celebrated with a campaign of observations that among other things captured the image of the Cone Nebula.