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Astronomers map the "chemical DNA" of over 340,000 stars to search for their long-lost siblings

April 18, 2018
The Galactic Archaeology with HERMES (GALAH) consortium today announces its second data release (DR2); the detailed chemical compositions and radial velocities (the motion of the stars relative to Earth) of 340,000 bright stars across the sky. MPIA has played a key role in the challenging data analysis of this unprecedented sample, in collaboration with several Australian universities and the Australian Astronomical Observatory. GALAH DR2 is spearheaded by MPIA PhD student Sven Buder. [more]
Original 1520258726

MATISSE sees first light at ESO´s Paranal Observatory in Chile

March 05, 2018
A new remarkable and unique instrument for very high resolution observations – the MATISSE (Multi AperTure mid-Infrared SpectroScopic Experiment) on ESO’s Very Large Telescope Interferometer (VLTI) at the Paranal Observatory has now collected successfully its first data on the night sky to ensure that the new instrument works as expected. This successful story rewards now the twelve years of long and intensive work of dozens of technicians, engineers and scientists in France, Germany, Austria, the Netherlands and at ESO. [more]
Original 1518507589

Stars Around the Milky Way: Cosmic Space Invaders or Victims of Galactic Eviction?

February 26, 2018
Astronomers have investigated a small population of stars in the halo of the Milky Way Galaxy, finding its chemical composition to closely match that of the Galactic disk. This similarity provides compelling evidence that these stars have originated from within the disc, rather than from merged dwarf galaxies. The reason for this stellar migration is thought to be theoretically proposed oscillations of the Milky Way disc as a whole, induced by the tidal interaction of the Milky Way with a passing massive satellite galaxy. [more]
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How black holes shape the cosmos

February 01, 2018
Astrophysicists from Heidelberg, Garching, and the USA gained new insights into the formation and evolution of galaxies. They calculated how black holes influence the distribution of dark matter, how heavy elements are produced and distributed throughout the cosmos, and where magnetic fields originate. This was possible by developing and programming a new simulation model for the universe, which created the most extensive simulations of this kind to date.First results of the "IllustrisTNG" project have now been published in three articles in the journal Monthly Notices of the Royal Astronomical Society. These findings should help to answer fundamental questions in cosmology. [more]
Teaser 1514969263

Library of galaxy histories reconstructed from motions of stars

January 03, 2018
The motions of stars in a galaxy are like a history book, yielding information about how the galaxy has grown over time. Now a group of astronomers has assembled a library of such galaxy history books. Their data for 300 galaxies showcases the diversity of the various ways different galaxies came into being over the past billions of years. This is the first large-scale library of galactic histories, and it is particularly important for astronomers running simulations of cosmic structure formation – since those simulations can now be checked against a large set of observations. The results have been published in the journal Nature Astronomy on January 1, 2018. [more]
Teaser 1514899658

Observations link galaxy's central black holes and star formation

January 01, 2018
Astronomers have found the first direct observational evidence for a long-suspected link between galaxies' central black holes and the rate at which stars form throughout a galaxy's history. To this end, the astronomers made use of a survey of black hole masses and reconstructed each galaxy's star formation history from its spectrum. Black hole mass and star formation rate were clearly linked, confirming a connection that had been assumed to exist for a considerable time. The results have been published in the journal Nature. [more]
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Patzer Prize Award 2017

December 13, 2017
Last Friday, on December 08, 2017, the solemn ceremony of the Ernst-Patzer Prize for the promotion of young scientists was held in the auditorium of the Max Planck Institute for Astronomy (MPIA). This year, the awards were given to Anna-Christina Eilers (MPIA), Daniel Rahner (ZAH/ITA) and Marta Reina-Campos (ZAH/ARI). [more]
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