SL
Sylvestre Lacour
astro-ph.IMastro-ph.SRastro-ph.EPastro-ph.GAastro-phastro-ph.HEgr-qcphysics.opticsastro-ph.CODirect imaging
On Valency
published · living versionsW_jc8878c3·v1 · currentpublished
Improving constraints on the extended mass distribution in the Galactic Center with stellar orbits
with The GRAVITY Collaboration, Karim Abd El Dayem, Roberto Abuter, Nicolas Aimar +64
1 version
W_e292bt9v·v1published
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W_wtvfdjv6·v1published
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W_bkjpk8re·v1published
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Preprints & journals
251 papers in the corpus · 2002–2026MATISSE in the era of GRAVITY+2609.35057v1 · Florentin Millour (LAGRANGE), Anthony Soulain (LAGRANGE), St'ephane Lagarde (LAGRANGE) et al.2026 · 0 citationsSPIE, SPIE, Jul 2026, Copenhagen, Denmark
Improving constraints on the Yukawa correction at the Galactic Center with multiple stellar orbits2609.07693v2 · K. Abd El Dayem, N. Aimar, A. Berdeu et al.2026 · 0 citationsarXiv
The Hill sphere transits of Beta Pictoris c and the search for another 1981-like event2609.02708v1 · V.E.C. Bakker, M.A. Kenworthy, R. Stuik et al.2026 · 0 citationsarXiv
Instrumental artifacts in photonic lantern spectroastrometry and their mitigation with PLred2608.22548v1 · Yoo Jung Kim, Michael P. Fitzgerald, Malena Bloom et al.2026 · 0 citationsProc. SPIE 14148, Optical and Infrared Interferometry and Imaging X, 1414840 (2026)
Discovery of a star sensitive to the spin of Sagittarius A.42618794 · Abd El Dayem, K, Abuter, R, Aimar, N et al.2026 · 4 citationsNature. 2026;657(8131):359-363
He'e-Lab: A modular testbed for astrophotonics and wavefront sensing development2608.04316v1 · Sebastien Vievard, Christopher Hamner, Nour Skaf et al.2026 · 0 citationsarXiv
FIRST-PL: Commissioning the first visible photonic lantern spectrograph for sub-diffraction-limit astronomy on Subaru/SCExAO2608.04372v1 · Sebastien Vievard, Elsa Huby, Sylvestre Lacour et al.2026 · 0 citationsarXiv
Technologies and novel components for broadband splitting and coupling in pairwise and nulling interferometry2607.23436v1 · Harry-Dean Kenchington Goldsmith, Nemanja Jovanovic, Anusha Pai Asnodkar et al.2026 · 0 citationsarXiv
Discovery of a star sensitive to the spin of Sgr A*2607.12664v1 · K. Abd El Dayem, R. Abuter, N. Aimar et al.2026 · 1 citationarXivon Valency
ngVLTI: Cost and Feasibility of a Four-Telescope VLTI Expansion for Milliarcsecond-Scale Imaging2607.12692v1 · Sylvestre Lacour, Johan Kosmalski, Michael Mueller et al.2026 · 0 citationsarXiv
Southern Massive Stars at High Angular Resolution (SMaSH+): Properties of hierarchical massive triples2606.28159v1 · E. Bordier, H. Sana, A. J. Frost et al.2026 · 1 citationarXiv
Using VLTI/GRAVITY+ to determine the identity of a third planet candidate in the PDS 70 system2606.26249v2 · David Trevascus, Wolfgang Brandner, Olga Balsalobre-Ruza et al.2026 · 1 citationarXiv
Two inner dust clumps in PDS 70. A third protoplanet traced by trojan material or a substructured inner disk?2606.26381v2 · O. Balsalobre-Ruza, V. Christiaens, N. Hu'elamo et al.2026 · 0 citationsarXiv
Multi-epoch scattered-light analysis of HD 135344B: new evidence for a spiral-driving protoplanet2606.10624v1 · J. Latour, V. Christiaens, O. Absil et al.2026 · 0 citationsarXiv
Destructuring the disk of AB Aurigae: Dynamics and accretion2605.27084v1 · Anthony Boccaletti, Emmanuel Di Folco, Anne Dutrey et al.2026 · 0 citationsarXiv
Linearized Zernike-based phasing for segmented mirrors: application to the ELT.42268090 · Kellerer, Aglae, Bonnet, Henri, Esselborn, Michael et al.2026 · 0 citationsApplied optics. 2026;65(14):4831-4843
Direct spectroscopic confirmation of the young embedded proto-planet WISPIT 2c2603.22085v1 · Chloe Lawlor, Richelle F. van Capelleveen, Guillaume Bourdarot et al.2026 · 0 citationsarXiv
The GRAVITY young stellar object survey -- XV. The star-disk interaction region of the T Tauri star DO Tau2603.22444v1 · K. Perraut, J. Bouvier, H. Nowacki et al.2026 · 0 citationsarXiv
Exoplanet atmospheres and demographics in the 2040s2601.11695v1 · Jens Kammerer, Sydney Vach, Sylvestre Lacour et al.2026 · 0 citationsarXiv
Exoplanets in reflected starlight with dual-field interferometry and a fifth Unit Telescope at VLTI2512.17026v1 · 'Oscar Carri'on-Gonz'alez, Sylvestre Lacour, Mathias Nowak2025 · 0 citationsarXiv
Hunting exomoons with a kilometric baseline interferometer2512.15858v1 · Thomas O. Winterhalder, Antoine M'erand, Sylvestre Lacour et al.2025 · 0 citationsarXiv
Exomoon search with VLTI/GRAVITY around the substellar companion HD 206893 B2511.20091v1 · Q. Kral, J. Wang, J. Kammerer et al.2025 · 8 citationsarXiv
On-sky Demonstration of Subdiffraction-limited Astronomical Measurement Using a Photonic Lantern2510.19911v1 · Yoo Jung Kim, Michael P. Fitzgerald, S'ebastien Vievard et al.2025 · 2 citationsThe Astrophysical Journal Letters, Volume 993 (2025), Number 1
The ExoGRAVITY survey: A K-band spectral library of giant exoplanet and brown dwarf companions2510.08691v3 · J. Kammerer, T. O. Winterhalder, S. Lacour et al.2025 · 6 citationsA&A 704, A318 (2025)
Multi-modal atmospheric characterization of Pictoris b: Adding high-resolution continuum spectra from GRAVITY2509.25338v2 · M. Ravet, M. Bonnefoy, G. Chauvin et al.2025 · 12 citationsA&A 704, A325 (2025)
First Light for the GRAVITY+ Adaptive Optics: Extreme Adaptive Optics for the Very Large Telescope Interferometer2509.21431v2 · GRAVITY+ Collaboration: F. Allouche, C. Bailet, M. Benisty et al.2025 · 10 citationsarXiv
Constraints on the Orbit of the Young Substellar Companion GQ Lup B from High-Resolution Spectroscopy and VLTI/GRAVITY Astrometry2509.20621v1 · Vidya Venkatesan, S. Blunt, J. J. Wang et al.2025 · 4 citationsarXiv
Astrometric exomoon detection by means of optical interferometry2509.15304v1 · T. O. Winterhalder, A. M'erand, J. Kammerer et al.2025 · 6 citationsarXiv
Spatially resolved broad line region in a quasar at z=4: Dynamical black hole mass and prominent outflow2509.13911v2 · GRAVITY+ Collaboration, K. Abd El Dayem, N. Aimar et al.2025 · 15 citationsarXiv
New Orbital Constraints for YSES 1 b and HR 2562 B from High-Precision Astrometry and Planetary Radial Velocities2509.14321v1 · Jonathan Roberts, William Thompson, Jason J. Wang et al.2025 · 3 citationsarXiv
YSES 2b is a background star: Differential astrometric M-dwarf measurements in time2509.09504v1 · Matthew Kenworthy, Tomas Stolker, Jens Kammerer et al.2025 · 2 citationsA&A 701 (2025) A104
The mid-infrared spectrum of Pictoris b. First VLTI/MATISSE interferometric observations of an exoplanet2508.18366v2 · M. Houll'e, F. Millour, P. Berio et al.2025 · 3 citationsA&A 704, A182 (2025)
Direct imaging discovery of a young giant planet orbiting on Solar System scales2507.06206v1 · T. Stolker, M. Samland, L. B. F. M. Waters et al.2025 · 5 citationsarXiv
Orbit and atmosphere of HIP 99770 b through the eyes of VLTI/GRAVITY2507.00117v1 · T. O. Winterhalder, J. Kammerer, S. Lacour et al.2025 · 7 citationsarXiv
Differentiating Formation Models with New Dynamical Masses for the PDS 70 Protoplanets2504.11210v2 · David Trevascus, Sarah Blunt, Valentin Christiaens et al.2025 · 12 citationsA&A 698, A19 (2025)
Exploring the presence of a fifth force at the Galactic Center2504.02908v4 · K. Abd El Dayem, R. Abuter, N. Aimar et al.2025 · 9 citationsA&A 698, L15 (2025)
VLTI/GRAVITY upper limit on near-infrared emission from the nearby 33 Msun black hole Gaia BH32502.19473v1 · Pierre Kervella, Pasquale Panuzzo, Alexandre Gallenne et al.2025 · 4 citationsarXiv
On the Orbit of the Binary Brown Dwarf Companion GL229 Ba and Bb2502.05359v1 · William Thompson, Dori Blakely, Jerry W. Xuan et al.2025 · 3 citationsarXiv
VLTI/GRAVITY Observations of AF Lep b: Preference for Circular Orbits, Cloudy Atmospheres, and a Moderately Enhanced Metallicity2411.05917v1 · William O. Balmer, Kyle Franson, Antoine Chomez et al.2024 · 31 citationsarXiv
The cool brown dwarf Gliese 229 B is a close binary.39415016 · Xuan, Jerry W, Mérand, A, Thompson, W et al.2024 · 30 citationsNature. 2024;634(8036):1070-1074
First Resolution of Microlensed Images of a Binary-Lens Event2409.13015v3 · Zexuan Wu, Subo Dong, A. M'erand et al.2024 · 7 citationsAstrophys. j. 977 (2024) 229
Improving constraints on the extended mass distribution in the Galactic Center with stellar orbits2409.12261v1 · Karim Abd El Dayem, Roberto Abuter, Nicolas Aimar et al.2024 · 49 citationsA&A 692, A242 (2024)on Valency
Spectroscopy using a visible photonic lantern at the Subaru telescope: Laboratory characterization and first on-sky demonstration on Ikiiki ({\alpha} Leo) and `Aua ({\alpha} Ori)2409.06958v3 · S'ebastien Vievard, Manon Lallement, Sergio Leon-Saval et al.2024 · 4 citationsA&A 691, A140 (2024)
Spectral interferometric wavefront sensing: a solution for petalometry at Subaru/SCExAO2409.05246v1 · Vincent Deo, Sebastien Vievard, Manon Lallement et al.2024 · 1 citationarXiv
Photonic beam-combiner for visible interferometry with SCExAO/FIRST: laboratory characterization and design optimization2409.03476v1 · Manon Lallement, Elsa Huby, Sylvestre Lacour et al.2024 · 5 citationsJournal of Astronomical Telescopes, Instruments, and Systems, Vol. 9, Issue 2, 025003 (April 2023)
Photonic chip for visible interferometry: laboratory characterization and comparison with the theoretical model2409.03808v1 · Manon Lallement, Sylvestre Lacour, Elsa Huby et al.2024 · 2 citationsProceeding SPIE Astronomical Telescopes + Instrumentation, Montreal, Quebec, Canada, Volume 12188, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V, 121882F (2022)
The MICADO first light imager for the ELT: Sparse Aperture Masks, design and simulations2408.17146v1 · Elsa Huby, Pierre Baudoz, Sylvestre Lacour et al.2024 · 3 citationsProc. SPIE, 2024, 13096, Ground-based and Airborne Instrumentation for Astronomy X, 130965D
The GRAVITY young stellar object survey XIV : Investigating the magnetospheric accretion-ejection processes in S CrA N2408.02374v1 · H. Nowacki, K. Perraut, L. Labadie et al.2024 · 4 citationsA&A 690, A123 (2024)
VLTI Unit Telescope coudé train vibration control upgrade for GRAVITY+2407.17191v1 · Romain Laugier, Julien Woillez, Denis Defrere et al.2024 · 1 citationarXiv
Visible Photonic Lantern integration, characterization and on-sky testing on Subaru/SCExAO2407.15412v1 · S'ebastien Vievard, Manon Lallement, Sergio Leon-Saval et al.2024 · 0 citationsarXiv
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