RA
Roberto Abuter
astro-ph.EPastro-ph.IMastro-ph.SRastro-phastro-ph.GAgr-qcastro-ph.HE
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, Nicolas Aimar, Pau Amaro Seoane +64
1 version
W_e292bt9v·v1published
W_gvqd3mhf·v1published
W_wtvfdjv6·v1published
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Preprints & journals
61 papers in the corpus · 2003–2026A first look at the protoplanet WISPIT 2 b with VLTI/GRAVITY+2610.21629v1 · K. Abd El Dayem, R. Abuter, N. Aimar et al.2026 · 0 citationsarXiv
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
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
Exomoon search with VLTI/GRAVITY around the substellar companion HD 206893 B2511.20091v1 · Q. Kral, J. Wang, J. Kammerer et al.2025 · 8 citationsarXiv
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)
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
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
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
High contrast at short separation with VLTI/GRAVITY: Bringing Gaia companions to light2406.04003v1 · N. Pourr'e, T.O. Winterhalder, J.-B. Le Bouquin et al.2024 · 11 citationsarXiv
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
Four-of-a-kind? Comprehensive atmospheric characterisation of the HR 8799 planets with VLTI/GRAVITY2404.03776v2 · E. Nasedkin, P. Molliere, S. Lacour et al.2024 · 58 citationsA&A 687, A298 (2024)
Combining Gaia and GRAVITY: Characterising five new Directly Detected Substellar Companions2403.13055v2 · T. O. Winterhalder, S. Lacour, A. M'erand et al.2024 · 17 citationsA&A 688, A44 (2024)
A catalogue of dual-field interferometric binary calibrators2402.05019v1 · M. Nowak, S. Lacour, R. Abuter et al.2024 · 10 citationsA&A 687, A248 (2024)
Upgrading the GRAVITY fringe tracker for GRAVITY+: Tracking the white light fringe in the non-observable Optical Path Length state-space2402.03594v1 · M. Nowak, S. Lacour, R. Abuter et al.2024 · 1 citationarXiv
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
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
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)
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
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
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)
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 asymmetric inner disk of the Herbig Ae star HD 163296 in the eyes of VLTI/MATISSE: evidence for a vortex?2012.05697v1 · J. Varga, M. Hogerheijde, R. van Boekel et al.2020 · 46 citationsA&A 647, A56 (2021)
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
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
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
GRAVITY chromatic imaging of Eta Car's core1808.02141v1 · J. Sanchez-Bermudez, G. Weigelt, J. M. Bestenlehner et al.2018 · 8 citationsarXiv
First Light for GRAVITY: Phase Referencing Optical Interferometry for the Very Large Telescope Interferometer1705.02345v1 · R. Abuter, M. Accardo, A. Amorim et al.2017 · 586 citationsA&A 602, A94 (2017)
Accretion-ejection morphology of the microquasar SS433 resolved at sub-au scale1705.02359v1 · P.-O. Petrucci, I. Waisberg, J.-B. Le Bouquin et al.2017 · 17 citationsA&A 602, L11 (2017)
Improving the astrometric performance of VLTI-PRIMA1407.0470v1 · J. Woillez, R. Abuter, L. Andolfato et al.2014 · 9 citationsProc. SPIE 9146, 9146-50 (2014)
Mid-infrared interferometry with K band fringe-tracking I. The VLTI MIDI+FSU experiment1406.4234v2 · A. Muller, J.-U. Pott, A. M'erand et al.2014 · 6 citationsA&A 567, A98 (2014)
The ESPRI project: astrometric exoplanet search with PRIMA I. Instrument description and performance of first light observations1212.2227v1 · J. Sahlmann, T. Henning, D. Queloz et al.2012 · 38 citationsarXiv
Narrow-angle astrometry with PRIMA1207.5510v1 · J. Sahlmann, D. S'egransan, A. M'erand et al.2012 · 8 citationsarXiv
First results from fringe tracking with the PRIMA fringe sensor unit1012.1321v1 · J. Sahlmann, R. Abuter, S. Menardi et al.2010 · 9 citationsProc. SPIE, Vol. 7734, 773422 (2010)
The PRIMA fringe sensor unit0909.1470v2 · Johannes Sahlmann, Serge Menardi, Roberto Abuter et al.2009 · 39 citationsAstronomy & Astrophysics Vol. 507 (2009) 1739-1757
Post-processing the VLTI fringe-tracking data: First measurements of stars0812.2328v1 · Jean-Baptiste Le Bouquin (ESO), Roberto Abuter (ESO), Pierre Haguenauer (ESO) et al.2008 · 13 citationsarXiv
Study of the Science Capabilities of PRIMA in the Galactic Center0807.4611v1 · H. Bartko, O. Pfuhl, F. Eisenhauer et al.2008 · 5 citationsarXiv
Evidence for a Long-Standing Top-Heavy IMF in the Central Parsec of the Galaxy0707.2382v1 · H. Maness, F. Martins, S. Trippe et al.2007 · 124 citationsarXiv
Intense Star-formation and Feedback at High Redshift: Spatially-resolved Properties of the z=2.6 Submillimeter Galaxy SMMJ14011+0252astro-ph/0611769v2 · N.P.H. Nesvadba, M.D.Lehnert, R.Genzel et al.2006 · 58 citationsAstrophys.J.657:725-738,2007
The rapid formation of a large rotating disk galaxy three billion years after the Big Bang.16915282 · Genzel, R, Tacconi, L J, Eisenhauer, F et al.2006 · 465 citationsNature. 2006;442(7104):786-9
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