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O. Marchal

Researcher at University of Paris

Publications -  23
Citations -  2861

O. Marchal is an academic researcher from University of Paris. The author has contributed to research in topics: Stars & Radial velocity. The author has an hindex of 15, co-authored 23 publications receiving 1900 citations.

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Gaia Data Release 2: Observational Hertzsprung-Russell diagrams

C. Babusiaux, +451 more
TL;DR: In this article, the power of the Gaia DR2 in studying many fine structures of the Hertzsprung-Russell diagram (HRD) was highlighted, depending in particular on stellar population selections.
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Gaia Data Release 2. Observations of solar system objects

Federica Spoto, +501 more
TL;DR: In this paper, the authors describe the processing of the Gaia DR2 data, and describe the criteria used to select the sample published in Gaia DR 2, and explore the data set to assess its quality.
Journal ArticleDOI

Gaia Data Release 2. Properties and validation of the radial velocities

TL;DR: In this paper, the authors describe the validation and properties of the median radial velocities published in Gaia DR2, which provide a full-sky coverage and are complete with respect to the astrometric data to within 77.2% (for G ≤ 12.5 mag).