English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  A geometric distance measurement to the Galactic center black hole with 0.3% uncertainty

Amorim, A., Bauböck, M., Berger, J. P., Bonnet, H., Brandner, W., Clénet, Y., et al. (2019). A geometric distance measurement to the Galactic center black hole with 0.3% uncertainty. Astronomy and Astrophysics, 625: L10. doi:10.1051/0004-6361/201935656.

Item is

Files

show Files
hide Files
:
A geometric distance measurement to the Galactic center black hole with 0.3% uncertainty.pdf (Any fulltext), 3MB
 
File Permalink:
-
Name:
A geometric distance measurement to the Galactic center black hole with 0.3% uncertainty.pdf
Description:
-
OA-Status:
Visibility:
Private
MIME-Type / Checksum:
application/pdf
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show

Creators

show
hide
 Creators:
Amorim, A., Author
Bauböck, M.1, Author           
Berger, J. P., Author
Bonnet, H., Author
Brandner, W., Author
Clénet, Y., Author
du Foresto, V. Coudé, Author
de Zeeuw, P. T.1, Author           
Dexter, J.1, Author           
Duvert, G., Author
Eckart, A., Author
Eisenhauer, F.1, Author           
Förster Schreiber, N. M.1, Author           
Garcia, P., Author
Gao, F.1, Author           
Gendron, E., Author
Genzel, R.1, Author           
Gerhard, O.2, Author           
Gillessen, S.1, Author           
Habibi, M.1, Author           
Haubois, X., AuthorHenning, T., AuthorHippler, S., AuthorHorrobin, M., AuthorJiménez Rosales, A.1, Author           Jocou, L., AuthorKervella, P., AuthorLacour, S.1, Author           Lapeyrère, V., AuthorLe Bouquin, J.-B., AuthorLéna, P., AuthorOtt, T.1, Author           Paumard, T., AuthorPerraut, K., AuthorPerrin, G., AuthorPfuhl, O.1, Author           Rabien, S.1, Author           Coira, G. Rodriguez, AuthorRousset, G., AuthorScheithauer, S., AuthorSternberg, A., AuthorStraub, O.1, Author           Straubmeier, C., AuthorSturm, E.1, Author           Tacconi, L. J.1, Author           Vincent, F., AuthorFellenberg, S. von1, Author           Waisberg, I.1, Author           Widmann, F.1, Author           Wieprecht, E.1, Author           Wiezorrek, E.1, Author           Woillez, J., AuthorYazici, S.1, Author            more..
Affiliations:
1Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society, ou_159889              
2Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society, ou_159895              

Content

show
hide
Free keywords: -
 Abstract: We present a 0.16% precise and 0.27% accurate determination of R0, the distance to the Galactic center. Our measurement uses the star S2 on its 16-year orbit around the massive black hole Sgr A* that we followed astrometrically and spectroscopically for 27 years. Since 2017, we added near-infrared interferometry with the VLTI beam combiner GRAVITY, yielding a direct measurement of the separation vector between S2 and Sgr A* with an accuracy as good as 20 μas in the best cases. S2 passed the pericenter of its highly eccentric orbit in May 2018, and we followed the passage with dense sampling throughout the year. Together with our spectroscopy, in the best cases with an error of 7 km s−1, this yields a geometric distance estimate of R0 = 8178 ± 13stat. ± 22sys. pc. This work updates our previous publication, in which we reported the first detection of the gravitational redshift in the S2 data. The redshift term is now detected with a significance level of 20σ with fredshift = 1.04 ± 0.05.

Details

show
hide
Language(s):
 Dates: 2019-05-20
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1051/0004-6361/201935656
Other: LOCALID: 3067269
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Astronomy and Astrophysics
  Other : Astron. Astrophys.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: France : EDP Sciences S A
Pages: - Volume / Issue: 625 Sequence Number: L10 Start / End Page: - Identifier: ISSN: 1432-0746
CoNE: https://pure.mpg.de/cone/journals/resource/954922828219_1