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CERN Document Server 92 Datensätze gefunden  1 - 10nächsteEnde  gehen zum Datensatz: Die Suche hat 1.04 Sekunden gedauert. 
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.
A combined approach for the calculation of activation yields and the characterization of materials for a medical cyclotron / Bonvin, V (CERN ; Lausanne U.) ; Bochud, F (Lausanne U.) ; Theis, C (CERN) ; Vincke, H (CERN ; Graz, Tech. U.) ; Damet, J (Lausanne U. ; Otago U.) ; Geyer, R (CERN ; Lausanne U.)
Cyclotrons for the production of radiopharmaceuticals have become important tools in modern nuclear medicine. At the end of their lifecycles, such installations have to be dismantled and any activated materials must be treated according to the local radiation protection legislation. [...]
2023 - 17 p. - Published in : Appl. Radiat. Isot. 204 (2024) 111116
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3.
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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4.
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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5.
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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6.
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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7.
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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8.
Detailed study of the distribution of activation inside the magnet coils of a compact PET cyclotron / Bonvin, V (CERN ; Lausanne U.) ; Bochud, F (Lausanne U.) ; Damet, J (Lausanne U. ; Otago U.) ; Theis, C (CERN) ; Vincke, H (CERN ; Graz, Tech. U.) ; Geyer, R (CERN ; Lausanne U.)
We determined the distribution of activation products inside the magnet coils of a medical cyclotron that has been operational for fifteen years. Besides FLUKA, we based our approach on new software tools (RAW and ActiWiz) developed for high-energy accelerators at CERN. [...]
2021 - 13 p. - Published in : Appl. Radiat. Isot. 168 (2021) 109446 Fulltext: PDF;
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9.
A 2.5m long liquid hydrogen target for COMPASS / Bielert, E (CERN) ; Bremer, J (CERN) ; Doshita, N (Yamagata U.) ; Geyer, R (Munich U.) ; Hashimoto, R (Yamagata U.) ; Horikawa, N (Chubu U.) ; Ishimoto, S (KEK, Tsukuba) ; Iwata, T (Yamagata U.) ; Kondo, K (Yamagata U.) ; Mallot, G K (CERN) et al.
A 2.5 m long liquid hydrogen target has been developed for the COMPASS experiment at CERN to investigate the nucleon spin structure via the Deeply Virtual Compton Scattering (DVCS) process. To recognize exclusive DVCS events, produced photons and slow protons need to be detected [...]
2014 - 6 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 746 (2014) 20-25 Elsevier Open Access article: PDF;
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10.
Liquid Hydrogen Target for the COMPASS experiment / Bremer, J (CERN) ; Doshita, N (Yamagata U.) ; Duday-Chanat, L (CERN) ; Geyer, R (Munich U.) ; Mallot, G K (CERN) ; Pirotte, O (CERN) ; Vullierme, B (CERN)
A liquid hydrogen target has been developed for the COMPASS experiment at CERN. [...]
CERN-ACC-2014-0290. - 2014. - 6 p.
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