PL
Pierre Léna
astro-ph.SRastro-ph.GAastro-ph.IMastro-ph.EPgr-qcastro-ph.HEastro-phEuropean Unionphysics.class-ph
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
W_gvqd3mhf·v1published
W_wtvfdjv6·v1published
W_ms5ca8v9·v1published
Preprints & journals
69 papers in the corpus · 1968–2025First 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
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)
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
Astrometric detection of a Neptune-mass candidate planet in the nearest M-dwarf binary system GJ65 with VLTI/GRAVITY2404.08746v1 · R.Abuter, A.Amorim, M.Benisty et al.2024 · 6 citationsarXiv
A catalogue of dual-field interferometric binary calibrators2402.05019v1 · M. Nowak, S. Lacour, R. Abuter et al.2024 · 10 citationsA&A 687, A248 (2024)
The GRAVITY young stellar object survey XIII. Tracing the time-variable asymmetric disk structure in the inner AU of the Herbig star HD989222401.17764v1 · V. Ganci, L. Labadie, K. Perraut et al.2024 · 0 citationsarXiv
A dynamical measure of the black hole mass in a quasar 11 billion years ago.38286342 · Abuter, R, Allouche, F, Amorim, A et al.2024 · 69 citationsNature. 2024;627(8003):281-285
Single-mode waveguides for GRAVITY II. Single-mode fibers and Fiber Control Unit2401.10613v1 · G. Perrin, L. Jocou, K. Perraut et al.2024 · 7 citationsA&A 681, A26 (2024)
The GRAVITY young stellar object survey: XI. Imaging the hot gas emission around the Herbig Ae star HD 586472312.08819v1 · Y.-I. Bouarour, R. Garcia Lopez, J. Sanchez-Bermudez et al.2023 · 0 citationsarXiv
VLTI/GRAVITY Provides Evidence the Young, Substellar Companion HD 136164 Ab formed like a "Failed Star"2312.08283v1 · William O. Balmer, L. Pueyo, S. Lacour et al.2023 · 12 citationsarXiv
Using the motion of S2 to constrain vector clouds around SgrA*2312.02653v2 · A. Foschi, R. Abuter, K. Abd El Dayem et al.2023 · 13 citationsarXiv
Polarization analysis of the VLTI and GRAVITY2311.03472v1 · F. Widmann, X. Haubois N. Schuhler, O. Pfuhl et al.2023 · 13 citationsarXiv
First VLTI/GRAVITY Observations of HIP 65426 b: Evidence for a Low or Moderate Orbital Eccentricity2310.00148v2 · S. Blunt, W. O. Balmer, J. J. Wang et al.2023 · 17 citationsarXiv
VLTI/GRAVITY Observations and Characterization of the Brown Dwarf Companion HD 72946 B2309.04403v3 · W. O. Balmer, L. Pueyo, T. Stolker et al.2023 · 15 citationsarXiv
Polarimetry and Astrometry of NIR Flares as Event Horizon Scale, Dynamical Probes for the Mass of Sgr A*2307.11821v2 · R. Abuter, N. Aimar, P. Amaro Seoane et al.2023 · 97 citationsA&A 677, L10 (2023)
Using the motion of S2 to constrain scalar clouds around SgrA*2306.17215v4 · A. Foschi, R. Abuter, N. Aimar et al.2023 · 37 citationsarXiv
Where intermediate-mass black holes could hide in the Galactic Centre: A full parameter study with the S2 orbit2303.04067v2 · O. Straub, M. Baubock, R. Abuter et al.2023 · 31 citationsA&A 672, A63 (2023)
The GRAVITY+ Project: Towards All-sky, Faint-Science, High-Contrast Near-Infrared Interferometry at the VLTI2301.08071v1 · GRAVITY+ Collaboration: Roberto Abuter, Patricio Alarcon, Fatme Allouche et al.2023 · 26 citationsarXiv
The GRAVITY Young Stellar Object survey -- IX. Spatially resolved kinematics of hot hydrogen gas in the star/disk interaction region of T Tauri stars2210.13095v3 · J. A. Wojtczak, L. Labadie, K. Perraut et al.2022 · 0 citationsA&A 669, A59 (2023)
Direct discovery of the inner exoplanet in the HD206893 system. Evidence for deuterium burning in a planetary-mass companion2208.04867v5 · S. Hinkley (Exeter), S. Lacour (LESIA), G.-D. Marleau et al.2022 · 82 citationsarXiv
First Light for GRAVITY Wide: Large Separation Fringe Tracking for the Very Large Telescope Interferometer2206.00684v2 · GRAVITY+ Collaboration: R. Abuter, F. Allouche, A. Amorim et al.2022 · 37 citationsA&A 665, A75 (2022)
Deep Images of the Galactic Center with GRAVITY2112.07477v1 · R. Abuter, N. Aimar, A. Amorim et al.2021 · 37 citationsA&A 657, A82 (2022)on Valency
The mass distribution in the Galactic Centre from interferometric astrometry of multiple stellar orbits2112.07478v1 · R. Abuter, N. Aimar, A. Amorim et al.2021 · 287 citationsA&A, 2021,on Valency
The GRAVITY Young Stellar Object survey. VII. The inner dusty disks of T Tauri stars2109.11826v1 · K. Perraut, L. Labadie, J. Bouvier et al.2021 · 0 citationsAstronomy & Astrophysics 655, A73 (2021)
The mass of Beta Pictoris c from Beta Pictoris b orbital motion2109.10671v1 · S. Lacour, J. J. Wang, L. Rodet et al.2021 · 89 citationsA&A 654, L2 (2021)
The GRAVITY Young Stellar Object survey VIII. Gas and dust faint inner rings in the hybrid disk of HD1415692109.10070v2 · V. Ganci, L. Labadie, L. Klarmann et al.2021 · 12 citationsA&A 655, A112 (2021)
The GRAVITY Young Stellar Object Survey. VI. Mapping the variable inner disk of HD 163296 at sub-au scales2107.02391v1 · J. Sanchez-Bermudez, A. Caratti o Garatti, R. Garcia Lopez et al.2021 · 23 citationsA&A 654, A97 (2021)
Constraining particle acceleration in Sgr A* with simultaneous GRAVITY, Spitzer, NuSTAR and Chandra observations2107.01096v1 · R. Abuter, A. Amorim, M. Baubock et al.2021 · 67 citationsA&A 654, A22 (2021)
GRAVITY K-band spectroscopy of HD 206893 B: brown dwarf or exoplanet2106.08249v1 · J. Kammerer, S. Lacour, T. Stolker et al.2021 · 29 citationsA&A 652, A57 (2021)
MOLsphere and pulsations of the Galactic Center's red supergiant GCIRS 7 from VLTI/GRAVITY2105.09832v1 · G. Rodr'iguez-Coira, T. Paumard, G. Perrin et al.2021 · 4 citationsA&A 651, A37 (2021)
A measure of the size of the magnetospheric accretion region in TW Hydrae2104.06441v1 · R. Garcia Lopez, A. Natta, A. Caratti o Garatti et al.2021 · 46 citationsNature 2020, 584, 547
The GRAVITY young stellar object survey V. The orbit of the T Tauri binary star WW Cha2102.00122v2 · F. Eupen, L. Labadie, R. Grellmann et al.2021 · 4 citationsA&A 648, A37 (2021)
Improved GRAVITY astrometric accuracy from modeling of optical aberrations2101.12098v1 · R. Abuter, A. Amorim, M. Baubock et al.2021 · 195 citationsA&A 647, A59 (2021)
The ExoGRAVITY project: using single mode interferometry to characterize exoplanets2101.07098v2 · S. Lacour, J. J. Wang, M. Nowak et al.2021 · 8 citationsarXiv
Constraining the Nature of the PDS 70 Protoplanets with VLTI/GRAVITY2101.04187v2 · J. J. Wang, A. Vigan, S. Lacour et al.2021 · 145 citationsarXiv
The GRAVITY Young Stellar Object survey IV. The CO overtone emission in 51 Oph at sub-au scales2011.05955v1 · M. Koutoulaki, R. Garcia Lopez, A. Natta et al.2020 · 2 citationsarXiv
Detection of faint stars near SgrA* with GRAVITY2011.03058v2 · R. Abuter, A. Amorim, M. Baubock et al.2020 · 35 citationsA&A 645, A127 (2021)on Valency
Direct confirmation of the radial-velocity planet Pic c2010.04442v1 · M. Nowak, S. Lacour, A.-M. Lagrange et al.2020 · 133 citationsarXiv
Dynamically important magnetic fields near the event horizon of Sgr A*2009.01859v2 · A. Jim'enez-Rosales, J. Dexter, F. Widmann et al.2020 · 73 citationsarXiv
The GRAVITY young stellar object survey III. The dusty disk of RY Lup2008.08527v1 · Y.-I. Bouarour, K. Perraut, F. M'enard et al.2020 · 10 citationsA&A 642, A162 (2020)
The Flux Distribution of Sgr A*2004.07185v2 · R. Abuter, A. Amorim, M Bauboeck et al.2020 · 64 citationsA&A 638, A2 (2020)
Detection of the Schwarzschild precession in the orbit of the star S2 near the Galactic centre massive black hole2004.07187v1 · R. Abuter, A. Amorim, M. Bauboeck et al.2020 · 567 citationsarXivon Valency
The GRAVITY young stellar object survey. II. First spatially resolved observations of the CO bandhead emission in a high-mass YSO2003.05404v1 · A. Caratti o Garatti, R. Fedriani, R. Garcia Lopez et al.2020 · 31 citationsA&A 635, L12 (2020)
Modeling the orbital motion of Sgr A*'s near-infrared flares2002.08374v1 · M. Baubock, J. Dexter, R. Abuter et al.2020 · 119 citationsarXiv
Peering into the formation history of beta Pictoris b with VLTI/GRAVITY long baseline interferometry1912.04651v1 · M. Nowak, S. Lacour, P. Molliere et al.2019 · 157 citationsA&A 633, A110 (2020)
The GRAVITY Young Stellar Object survey -- I. Probing the disks of Herbig Ae/Be stars in terrestrial orbits1911.00611v1 · K. Perraut, L. Labadie, B. Lazareff et al.2019 · 72 citationsarXiv
Scalar field effects on the orbit of S2 star1908.06681v2 · Ant'onio Amorim, Michael Baubock, Myriam Benisty et al.2019 · 68 citationsarXiv
A geometric distance measurement to the Galactic Center black hole with 0.3% uncertainty1904.05721v1 · R. Abuter, A. Amorim, M. Bauboeck et al.2019 · 851 citations2019, A&A, 625, L10
First direct detection of an exoplanet by optical interferometry; Astrometry and K-band spectroscopy of HR8799 e1903.11903v1 · S. Lacour, M. Nowak, J. Wang et al.2019 · 156 citationsarXiv
Test of the Einstein Equivalence Principle near the Galactic Center Supermassive Black Hole.30932663 · Amorim, A, Bauböck, M, Berger, J P et al.2019 · 47 citationsPhysical review letters. 2019;122(10):101102
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