S62 on a 9.9 yr Orbit around SgrA*
@article{Peiker2020S62OA, title={S62 on a 9.9 yr Orbit around SgrA*}, author={Florian Pei{\ss}ker and Andreas Eckart and Marzieh Parsa}, journal={arXiv: Astrophysics of Galaxies}, year={2020} }
We observe the S-cluster star S62 on its Keplerian orbit around the supermassive black hole in the center of our galaxy, SgrA*. The orbital time period of S62 around SgrA* is 9.9 years. We derive its mass to be around 2 M_solar which is consistent with other members of the S-cluster. From the Lucy-Richardson deconvolved images, we determine a K-band magnitude of 16.1 mag. We observe almost two complete orbits of the star with two different and independent telescopes and three different…
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References
SHOWING 1-10 OF 56 REFERENCES
GWs from S-stars Revolving Around SMBH at Sgr A*
- PhysicsCommunications in Theoretical Physics
- 2018
A preliminary estimation of gravitational waves (GWs) from the extreme-mass-ratio-inspirals (EMRIs) system in the Galactic Centre (GC) is given for the 37 observed S-stars revolving around the…
Investigating the Relativistic Motion of the Stars Near the Supermassive Black Hole in the Galactic Center
- Physics
- 2017
The S-star cluster in the Galactic center allows us to study the physics close to a supermassive black hole, including distinctive dynamical tests of general relativity. Our best estimates for the…
High Proper-Motion Stars in the Vicinity of Sagittarius A*: Evidence for a Supermassive Black Hole at the Center of Our Galaxy
- Physics
- 1998
Over a 2 year period we have conducted a di†raction-limited imaging study at 2.2 km of the inner 6A ) 6A of the central stellar cluster of the Galaxy using the W. M. Keck 10 m telescope. The K-band…
Stellar orbits near Sagittarius A
- Physics, Geology
- 2001
The SHARP/NTT stellar proper motion data now cover an interval from 1992 to 2000 and allow us to determine orbital accelerations for some of the most central stars of the Galaxy. We confirm the…
A star in a 15.2-year orbit around the supermassive black hole at the centre of the Milky Way
- PhysicsNature
- 2002
Ten years of high-resolution astrometric imaging allow us to trace two-thirds of the orbit of the star currently closest to the compact radio source (and massive black-hole candidate) Sagittarius A* and show that the star is on a bound, highly elliptical keplerian orbit around Sgr A*.
THE ORBIT OF THE STAR S2 AROUND SGR A* FROM VERY LARGE TELESCOPE AND KECK DATA
- Physics, Geology
- 2009
Two recent papers (Ghez et al. 2008; Gillessen et al. 2009) have estimated the mass of and the distance to the massive black hole (MBH) in the center of the Milky Way using stellar orbits. The two…
Detection of the gravitational redshift in the orbit of the star S2 near the Galactic centre massive black hole
- PhysicsAstronomy & Astrophysics
- 2018
The highly elliptical, 16-year-period orbit of the star S2 around the massive black hole candidate Sgr A✻ is a sensitive probe of the gravitational field in the Galactic centre. Near pericentre at…
Detection of orbital motions near the last stable circular orbit of the massive black hole SgrA*
- PhysicsAstronomy & Astrophysics
- 2018
We report the detection of continuous positional and polarization changes of the compact source SgrA* in high states (“flares”) of its variable near-infrared emission with the near-infrared…
Stellar proper motions in the central 0.1 PC of the galaxy
- Physics
- 1997
We report the first results of a programme to measure proper motions of stars in the innermost core of the Galaxy. From high-resolution near-infrared imaging over the last four years we have…
An Improved Distance and Mass Estimate for Sgr A* from a Multistar Orbit Analysis
- Physics
- 2016
We present new, more precise measurements of the mass and distance of our Galaxy's central supermassive black hole, Sgr A*. These results stem from a new analysis that more than doubles the time…