ESO is the foremost intergovernmental astronomy organisation in Europe and the world's most productive astronomical observatory. It operates three sites in Chile — La Silla, Paranal and Chajnantor — on behalf of its fifteen member states. It builds ALMA together with international partners, and designs the European Extremely Large Telescope.
Astronomers have used the APEX telescope to probe a huge galaxy cluster that is forming in the early Universe and revealed that much of the star formation taking place is not only hidden by dust, but also occurring in unexpected places. This is the first time that a full census of the star formation in such an object has been possible.
The Wide Field Imager on the MPG/ESO 2.2-metre telescope at ESO’s La Silla Observatory in Chile has taken this beautiful image, dappled with blue stars, of one of the most star-rich open clusters currently known — Messier 11, also known as NGC 6705 or the Wild Duck Cluster.
Violent Origins of Disc Galaxies Probed by ALMA — New observations explain why Milky Way-like galaxies are so common in the Universe
For decades scientists have believed that galaxy mergers usually result in the formation of elliptical galaxies. Now, for the the first time, researchers using ALMA and a host of other radio telescopes have found direct evidence that merging galaxies can instead form disc galaxies, and that this outcome is in fact quite common. This surprising result could explain why there are so many spiral galaxies like the Milky Way in the Universe.
This Star Cluster Is Not What It Seems — VLT observations of Messier 54 show the lithium problem also applies outside our galaxy
This new image from the VLT Survey Telescope at ESO’s Paranal Observatory in northern Chile shows a vast collection of stars, the globular cluster Messier 54. This cluster looks very similar to many others but it has a secret. Messier 54 doesn’t belong to the Milky Way, but is part of a small satellite galaxy, the Sagittarius Dwarf Galaxy. This unusual parentage has now allowed astronomers to use the Very Large Telescope (VLT) to test whether there are also unexpectedly low levels of the element lithium in stars outside the Milky Way.
Lupus 4, a spider-shaped blob of gas and dust, blots out background stars like a dark cloud on a moonless night in this intriguing new image. Although gloomy for now, dense pockets of material within clouds such as Lupus 4 are where new stars form and where they will later burst into radiant life. The Wide Field Imager on the MPG/ESO 2.2-metre telescope at ESO’s La Silla Observatory in Chile captured this new picture.
Contacts and Bio
Dr. Paola Rebusco
ESO Science Outreach Network
MIT - Experimental Study Group
Massachusetts Avenue 77
Cambridge, MA 02139
Paola is currently working as a research scientist and lecturer at the Massachusetts Institute of Technology (MIT in Cambridge, MA). She was born in Italy, near Lake Garda. She earned her master's degree in theoretical physics from the University of Trieste (Italy) in 2003. She received her PhD in astronomy from the Ludwig Maximillian University (Munich, Germany) and the International Max Planck Research School for Astrophysics in 2007. She then crossed the Atlantic, along with her dog Balù, and spent three years as a Pappalardo Postdoctoral fellow in Physics at MIT. Dr Rebusco is not only interested in theoretical astrophysics and teaching, but also in how specialised knowledge is made publicly accessible. During the last six months of her PhD she was a science-writing intern at ESO. Today, apart from being the ESON representative in the United States, Paola comments on scientific news for the Italian radio programme Moebius, and contributes to the Italian science magazine Newton. Paola loves travelling (especially to warm places), sailing, writing and reading, cooking and eating, and playing basketball with her husband. Although she is not an observer, she travels to Chile to visit her friends and ESO’s observatories whenever she can.
Read Paola’s webpages here and here.
About the ESO Science Outreach Network
The ESO education and Public Outreach Department has established a network of contacts in the ESO Member states and other countries. The goal of this ESO Science Outreach Network (ESON) is to act locally as ESO's media and outreach representative, in order to promote ESO's mission and achievements, and demonstrate the many inspirational aspects of astronomy.
More information about ESON is available on: http://www.eso.org/public/outreach/eson.html