The mass distribution in the Galactic Centre from interferometric astrometry of multiple stellar orbits

Abstract

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. We present the simultaneous detection of several stars within the diffraction limit of a single telescope, illustrating the power of interferometry. The new data for the stars S2, S29, S38 and S55 yield significant accelerations between March and July 2021, as these stars pass the pericenters of their orbits between 2018 and 2023. This allows for a high-precision determination of the gravitational potential around Sgr A*. Our data are in excellent agreement with general relativity orbits around a single central point mass, M = 4.30 x 10^6 M_sun with a precision of about +-0.25%. We improve the significance of our detection of the Schwarzschild precession in the S2 orbit to 7 sigma. Assuming plausible density profiles, an extended mass component inside S2's apocentre (= 0.23" or 2.4 x 10^4 R_S) must be 3000 M_sun (1 sigma), or 0.1% of M. Adding the enclosed mass determinations from 13 stars orbiting Sgr A* at larger radii, the innermost radius at which the excess mass beyond Sgr A* tentatively is seen is r = 2.5" >= 10x the apocentre of S2. This is in full harmony with the stellar mass distribution (including stellar-mass black holes) obtained from the spatially resolved luminosity function.

published in A&A

References in corpus (42)

• Monitoring stellar orbits around the Massive Black Hole in the Galactic Center
• Measuring Distance and Properties of the Milky Way's Central Supermassive Black Hole with Stellar Orbits
• The Galactic Center Massive Black Hole and Nuclear Star Cluster
• Closest Star Seen Orbiting the Supermassive Black Hole at the Centre of the Milky Way
• Detection of the gravitational redshift in the orbit of the star S2 near the Galactic centre massive black hole
• Event-horizon-scale structure in the supermassive black hole candidate at the Galactic Centre
• A geometric distance measurement to the Galactic Center black hole with 0.3% uncertainty
• The First Measurement of Spectral Lines in a Short-Period Star Bound to the Galaxy's Central Black Hole: A Paradox of Youth
• The Two Young Star Disks in the Central Parsec of the Galaxy: Properties, Dynamics and Formation
• SINFONI in the Galactic Center: young stars and IR flares in the central light month
• The Stellar Cusp Around the Supermassive Black Hole in the Galactic Center
• First Light for GRAVITY: Phase Referencing Optical Interferometry for the Very Large Telescope Interferometer
• Detection of the Schwarzschild precession in the orbit of the star S2 near the Galactic centre massive black hole
• Relativistic redshift of the star S0-2 orbiting the Galactic center supermassive black hole
• An Update on Monitoring Stellar Orbits in the Galactic Center
• Detection of orbital motions near the last stable circular orbit of the massive black hole SgrA*
• Stellar dynamics in the central arcsecond of our galaxy
• A Disk of Young Stars at the Galactic Center as Determined by Individual Stellar Orbits
• A Geometric Determination of the Distance to the Galactic Center
• An Improved Distance and Mass Estimate for Sgr A* from a Multistar Orbit Analysis
• The mass distribution in the Galactic Centre from interferometric astrometry of multiple stellar orbits
• Evidence for Warped Disks of Young Stars in the Galactic Center
• The Shortest Known Period Star Orbiting our Galaxy's Supermassive Black Hole
• Improved GRAVITY astrometric accuracy from modeling of optical aberrations
• Stellar Dynamics and Stellar Phenomena Near A Massive Black Hole
• The Proper Motion of Sagittarius A*: III. The Case for a Supermassive Black Hole
• The Size, Shape, and Scattering of Sagittarius A* at 86 GHz: First VLBI with ALMA
• The distribution of old stars around the Milky Way's central black hole I: Star counts
• The distribution of stars around the Milky Way's black hole III: Comparison with simulations
• The Position of Sagittarius A*: III. Motion of the Stellar Cusp
• Hinting a dark matter nature of Sgr A* via the S-stars
• Dynamical Imaging with Interferometry
• Pinpointing the near-infrared location of Sgr A* by correcting optical distortion in the NACO imager
• The geodesic motion of S2 and G2 as a test of the fermionic dark matter nature of our galactic core
• Information theory for fields
• Weighing the cusp at the Galactic Centre
• The dark mass signature in the orbit of S2
• Comparison of classical and Bayesian imaging in radio interferometry
• Spectroscopic Detection of a Cusp of Late-type Stars around the Central Black Hole in the Milky Way
• What stellar orbit is needed to measure the spin of the Galactic center black hole from astrometric data?
• The Galactic Center: An Improved Astrometric Reference Frame for Stellar Orbits around the Supermassive Black Hole
• The Galactic Center: Improved Relative Astrometry for Velocities, Accelerations, and Orbits near the Supermassive Black Hole

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