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Alex Bombrun

Researcher at European Space Agency

Publications -  65
Citations -  25890

Alex Bombrun is an academic researcher from European Space Agency. The author has contributed to research in topics: Astrometry & Stars. The author has an hindex of 29, co-authored 56 publications receiving 19895 citations. Previous affiliations of Alex Bombrun include Heidelberg University & Max Planck Society.

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Gaia Data Release 2: The astrometric solution

Lennart Lindegren, +92 more
TL;DR: Gaia Data Release 2 (Gaia DR2) contains results for 1693 million sources in the magnitude range 3 to 21 based on observations collected by the European Space Agency Gaia satellite during the first 22 months of its operational phase as mentioned in this paper.
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Gaia Early Data Release 3: The Gaia Catalogue of Nearby Stars

R. L. Smart, +421 more
TL;DR: In this paper, a clean and well-characterised catalogue of objects within 100 εpc of the Sun from the G\ Early Data Release 3 is presented, which is the first analysis of the science that is possible with this sample to demonstrate its potential and best practices.
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Gaia Data Release 2 Variable stars in the colour-absolute magnitude diagram

L. Eyer, +454 more
TL;DR: In this article, the locations of variable star classes, variable object fractions, and typical variability amplitudes throughout the CaMD and show how variabilityrelated changes in colour and brightness induce "motions".
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Gaia Data Release 1. Open cluster astrometry: performance, limitations, and future prospects

F. van Leeuwen, +590 more
TL;DR: The first Gaia Data Release contains the Tycho-Gaia Astrometric Solution (TGAS) component by means of the astrometric data for open clusters as mentioned in this paper, which is a subset of about 2 million stars for which, besides the position and photometry, the proper motion and parallax are calculated using Hipparcos and Tycho 2 positions in 1991.
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Gaia Data Release 1: Pre-processing and source list creation

C. Fabricius, +110 more
TL;DR: The first data release from the Gaia mission contains accurate positions and magnitudes for more than a billion sources, and proper motions and parallaxes for the majority of the 2.5 million HIPPARCOS and Tycho-2 stars as mentioned in this paper.