Since the launch of the mission in 2013, two large directories have been released, known as Gaia Data Release 1 and 2 (DR1 and DR2), accompanied by a smaller data set – Early Data Release 3 (EDR3). On June 13, the third complete list of Gaia (DR3) will be released, which will contain new and improved details of the two billion celestial objects it observed. The release will coincide with a virtual press event hosted by the Gaia Data Processing and Analysis Consortium (DPAC), where selected speakers will share the significance of this latest release and how it is revolutionizing our understanding of the galaxy. The impression of the artist from the Observatory of Gaia who observes the Galaxy of the Galaxy. Credit: ESA Gaia DPAC is made up of expert scientists and software developers from Europe and around the world. In cooperation with ESA, the Consortium is responsible for the processing and analysis of Gaia data and the production of Gaia directories. The press event will take place on Tuesday 12 June, from 04:00 to 05:00 EDT (01:00 to 02:00 PDT). The event will feature a panel of speakers, which will include: Remove all ads on Universe Today Register with our Patreon for just $ 3! Gain a lifetime experience without ads
Josef Aschbacher – Director-General of ESA Günther Hasinger – Director of Science at ESA Timo Prusti – Gaia Project Scientist Anthony Brown – President of Gaia Data Processing and Analysis Consortium Antonella Vallenari – Gaia Data Processing and Analysis Consortium Chair Vice President Conny Aerts – Professor at the University of Leuven and a member of the Gaia Collaboration
DPAC has also organized a number of local events in 13 countries and many languages (English, French, German, Dutch, Spanish and Italian). The event will be broadcast live on ESA WebTV and media representatives are encouraged to download the Gaia DR3 Media Kit in advance. A full overview of DR3 events can be found here. This latest dataset (collected from 25 July 2014 to 28 May 2017) contains improved information on the many stars observed on Gaia during its mission, most of which consist of recently released spectroscopy that revealed chemical composition, temperature, color, mass and age of these stars. The release also included radial velocity measurements for 33 million stars, five times that of DR2. Also new to this dataset are information on thousands of objects in the Solar System (such as asteroids and moons), millions of galaxies and quasars outside our galaxy, and the largest list of binary stars in our galaxy. Gaia data release 3 (DR3) multimedia kit cover. Credit: ESA Equally important is the interstellar medium, the area of space between stars that is largely composed of traces of dust and gas. By mapping this, astronomers can also learn more about stellar motion, star formation, and how our galaxy evolved over billions of years. This is where the Gaia All-sky dust map comes into play, a three million pixel map based on the proper motion and speeds of 470 million stars. Overall, the DR3 contains many record-breaking features. These include:
The largest low-resolution spectroscopy research ever The greatest radial velocity research ever The largest collection of astrophysical data for stars in our Galaxy for many classes of variable stars: the largest research ever done The most comprehensive binary star research in the last two centuries The most accurate research of asteroids containing data on their composition and orbits The first space exploration across the sky of quasars and galaxies in the Local Universe A photometric survey of the Andromeda Galaxy
A series of 50 documents are also pending, nine of which are specifically dedicated to demonstrating the great potential of this latest Gaia data release. Astronomers expect these new measurements to allow them to reconstruct the 13.61 billion-year history of the Galaxy and its future evolution. They also expect the data to improve our understanding of stellar life cycle and the position of the Solar System in the Universe. This has always been the greatest goal of the Gaia Observatory: to answer the deeper questions of cosmology and existence. Further reading: ESA
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