The DOI matches its Crossref record; 49 of the 49 references it cites were found in a registry or an index.
Mass distribution in the Galactic Center based on interferometric astrometry of multiple stellar orbits
Open accessAbstract
Stars orbiting the compact radio source Sgr A* in the Galactic Center serve as 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, we have obtained 30–100 μas astrometry since 2017 with the four-telescope interferometric beam combiner GRAVITY/VLTI, capable of 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 in the field. 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 × 10 6 M⊙, with a precision of about ±0.25%. We improve the significance of our detection of the Schwarzschild precession in the S2 orbit to 7 σ. Assuming plausible density profiles, the extended mass component inside the S2 apocenter (≈0.23″ or 2.4 × 10 4 RS) must be ≲3000 M⊙ (1 σ), 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* is tentatively seen is r ≈ 2.5″ ≥ 10× the apocenter of S2. This is in full harmony with the stellar mass distribution (including stellar-mass black holes) obtained from the spatially resolved luminosity function.
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Cites
Theory and Experiment in Gravitational Physics
Will, C. M. (2018) · doi:10.1017/9781316338612 · Cited by 3,637
MONITORING STELLAR ORBITS AROUND THE MASSIVE BLACK HOLE IN THE GALACTIC CENTER
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Self-citationOn the Problem of Distribution in Globular Star Clusters: (Plate 8.)
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The Galactic Center massive black hole and nuclear star cluster
Genzel, R., Eisenhauer, F., & Gillessen, S. (2010) · Reviews of Modern Physics · doi:10.1103/revmodphys.82.3121 · Cited by 1,236
Self-citationA star in a 15.2-year orbit around the supermassive black hole at the centre of the Milky Way
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Self-citationGRAVITY Collaboration, Abuter, R., Amorim, A., Anugu, N., Bauböck, M., Benisty, M., Berger, J. P., Blind, N., Bonnet, H., Brandner, W., et al. (2018) · Astronomy & Astrophysics · doi:10.1051/0004-6361/201833718 · Cited by 946
Self-citationEvent-horizon-scale structure in the supermassive black hole candidate at the Galactic Centre
Doeleman, S. S., Weintroub, J., Rogers, A. E. E., Plambeck, R., Freund, R., Tilanus, R. P. J., Friberg, P., Ziurys, L. M., Moran, J. M., Corey, B., et al. (2008) · Nature · doi:10.1038/nature07245 · Cited by 836
A geometric distance measurement to the Galactic center black hole with 0.3% uncertainty
The GRAVITY Collaboration, Abuter, R., Amorim, A., Bauböck, M., Berger, J. P., Bonnet, H., Brandner, W., Clénet, Y., Coudé du Foresto, V., de Zeeuw, P. T., et al. (2019) · Astronomy & Astrophysics · doi:10.1051/0004-6361/201935656 · Cited by 827
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Cited by
First Sagittarius A* Event Horizon Telescope Results. VI. Testing the Black Hole Metric
Event Horizon Telescope Collaboration, Akiyama, K., Alberdi, A., Alef, W., Algaba, J. C., Anantua, R., Asada, K., Azulay, R., Bach, U., Baczko, A.-K., et al. (2022) · The Astrophysical Journal Letters · doi:10.3847/2041-8213/ac6756 · Cited by 668
Self-citationGaia Data Release 3: Properties and validation of the radial velocities
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Metadata
- Authors
- GRAVITY Collaboration, Abuter, R., Aimar, N., Amorim, A., Ball, J., Bauböck, M., Berger, J. P., Bonnet, H., Bourdarot, G., Brandner, W., Cardoso, V., Clénet, Y., Dallilar, Y., Davies, R., de Zeeuw, P. T., Dexter, J., Drescher, A., Eisenhauer, F., Förster Schreiber, N. M., Foschi, A., Garcia, P., Gao, F., Gendron, E., Genzel, R., Gillessen, S., Habibi, M., Haubois, X., Heißel, G., Henning, T., Hippler, S., Horrobin, M., Jochum, L., Jocou, L., Kaufer, A., Kervella, P., Lacour, S., Lapeyrère, V., Le Bouquin, J.-B., Léna, P., Lutz, D., Ott, T., Paumard, T., Perraut, K., Perrin, G., Pfuhl, O., Rabien, S., Shangguan, J., Shimizu, T., Scheithauer, S., Stadler, J., Stephens, A. W., Straub, O., Straubmeier, C., Sturm, E., Tacconi, L. J., Tristram, K. R. W., Vincent, F., von Fellenberg, S., Widmann, F., Wieprecht, E., Wiezorrek, E., Woillez, J., Yazici, S., & Young, A.
- Venue
- Astronomy & Astrophysics
- Publisher
- EDP Sciences
- Published
- 2022-01
- Volume
- 657
- Pages
- L12
- ISSN
- 0004-6361 (ISSN-L)
- 1432-0746
- OpenAlex
- W4200486006
- Cited by
- 283
- References
- 49
- FWCI
- 20.84
- Type
- journal article
- Language
- en
- Open access
- hybrid
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- GRAVITY Collaboration, Abuter, R., Aimar, N., Amorim, A., Ball, J., Bauböck, M., Berger, J. P., Bonnet, H., Bourdarot, G., Brandner, W., Cardoso, V., Clénet, Y., Dallilar, Y., Davies, R., de Zeeuw, P. T., Dexter, J., Drescher, A., Eisenhauer, F., Förster Schreiber, N. M., . . . Young, A. (2022). Mass distribution in the Galactic Center based on interferometric astrometry of multiple stellar orbits. Astronomy & Astrophysics. https://doi.org/10.1051/0004-6361/202142465
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