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CERN Document Server Sök i 10 journaler efter:  Sökningen tog 1.13 sekunder. 
1.
Gaia Data Release 3 - Stellar multiplicity, a teaser for the hidden treasure / Gaia Collaboration
Context.TheGaiaDR3 catalogue contains, for the first time, about 800 000 solutions with either orbital elements or trend parameters for astrometric, spectroscopic, and eclipsing binaries, and combinations of these three.Aims.With this paper, we aim to illustrate the huge potential of this large non-single-star catalogue.Methods.Using the orbital solutions and models of the binaries, we have built a catalogue of tens of thousands of stellar masses or lower limits thereof, some with consistent flux ratios. Properties concerning the completeness of the binary catalogues are discussed, statistical features of the orbital elements are explained, and a comparison with other catalogues is performed.Results.Illustrative applications are proposed for binaries across the Hertzsprung-Russell Diagram (HRD). [...]
arXiv:2206.05595.- 2023-06 - 57 p. - Published in : Astron. Astrophys. 674 (2023) A34 Fulltext: PDF;
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2.
Gaia Data Release 3 - Summary of the content and survey properties / Gaia Collaboration
Context. We present the third data release of the European Space Agency’s Gaia mission, Gaia DR3. [...]
arXiv:2208.00211.- 2023-06-01 - 22 p. - Published in : Astron. Astrophys. 674 (2023) A1 Fulltext: PDF;
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3.
Gaia Data Release 3 - Exploring and mapping the diffuse interstellar band at 862 nm / Gaia Collaboration
Context. Diffuse interstellar bands (DIBs) are common interstellar absorption features in spectroscopic observations but their origins remain unclear. [...]
arXiv:2206.05536.- 2023-06-01 - 25 p. - Published in : Astron. Astrophys. 674 (2023) A40 Fulltext: PDF;
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4.
Gaia Data Release 3: Chemical cartography of the Milky Way / Gaia Collaboration
Gaia DR3 opens a new era of all-sky spectral analysis of stellar populations thanks to the nearly 5.6 million stars observed by the RVS and parametrised by the GSP-spec module. The all-sky Gaia chemical cartography allows a powerful and precise chemo-dynamical view of the Milky Way with unprecedented spatial coverage and statistical robustness. [...]
arXiv:2206.05534.- 2023-06 - 49 p. - Published in : Astron. Astrophys. 674 (2023) A38 Fulltext: 2206.05534 - PDF; Publication - PDF;
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5.
Gaia Data Release 3: The extragalactic content / Gaia Collaboration
The Gaia Galactic survey mission is designed and optimized to obtain astrometry, photometry, and spectroscopy of nearly two billion stars in our Galaxy. Yet as an all-sky multi-epoch survey, Gaia also observes several million extragalactic objects down to a magnitude of G~21 mag. [...]
arXiv:2206.05681.- 2023-06-01 - 33 p. - Published in : Astron. Astrophys. 674 (2023) A41 Fulltext: 2206.05681 - PDF; document - PDF;
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6.
Gaia Early Data Release 3 - The celestial reference frame (Gaia-CRF3) / Gaia Collaboration
Gaia-CRF3 is the celestial reference frame for positions and proper motions in the third release of data from the Gaia mission, Gaia DR3 (and for the early third release, Gaia EDR3, which contains identical astrometric results). The reference frame is defined by the positions and proper motions at epoch 2016.0 for a specific set of extragalactic sources in the (E)DR3 catalogue. [...]
arXiv:2204.12574.- 2022-11-01 - 31 p. - Published in : Astron. Astrophys. 667 (2022) A148 Fulltext: document - PDF; 2204.12574 - PDF;
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7.
Mass distribution in the Galactic Center based on interferometric astrometry of multiple stellar orbits / GRAVITY Collaboration
The stars orbiting the compact radio source Sgr A* in the Galactic Centre are precision probes of the gravitational field around the closest massive black hole. In addition to adaptive optics assisted astrometry (with NACO / VLT) and spectroscopy (with SINFONI / VLT, NIRC2 / Keck and GNIRS / Gemini) over three decades, since 2016/2017 we have obtained 30-100 mu-as astrometry with the four-telescope interferometric beam combiner GRAVITY / VLTI reaching a sensitivity of mK = 20 when combining data from one night. [...]
arXiv:2112.07478.- 2022-01-01 - 17 p. - Published in : Astron. Astrophys. 657 (2022) L12 Fulltext: 2112.07478 - PDF; document - PDF;
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8.
Deep images of the Galactic center with GRAVITY / GRAVITY Collaboration
Stellar orbits at the Galactic Center provide a very clean probe of the gravitational potential of the supermassive black hole. They can be studied with unique precision, beyond the confusion limit of a single telescope, with the near-infrared interferometer GRAVITY. [...]
arXiv:2112.07477.- 2022-01-01 - 24 p. - Published in : Astron. Astrophys. 657 (2022) A82 Fulltext: PDF;
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9.
Detection of the Schwarzschild precession in the orbit of the star S2 near the Galactic centre massive black hole / GRAVITY Collaboration
The star S2 orbiting the compact radio source Sgr A* is a precision probe of the gravitational field around the closest massive black hole (candidate). Over the last 2.7 decades we have monitored the star's radial velocity and motion on the sky, mainly with the SINFONI and NACO adaptive optics (AO) instruments on the ESO VLT, and since 2017, with the four-telescope interferometric beam combiner instrument GRAVITY. [...]
arXiv:2004.07187.- 2020-04-01 - 14 p. - Published in : Astron. Astrophys. 636 (2020) L5 Fulltext: 2004.07187 - PDF; fulltext1791318 - PDF; Fulltext from publisher: PDF;
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10.
First Science Results from the VLT Interferometer / Paresce, Francesco ; Glindemann, A ; Kervella, P ; Richichi, A ; Schöller, M ; Tarenghi, M ; Wittkowski, M ; van Bockel, R
2003
In : ESO-CERN-ESA Symposium on Astronomy, Cosmology and Fundamental Physics, Garching, Germany, 4 - 7 Mar 2002, pp.343-346
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93 Kervella, P
28 Kervella, Pierre
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