S62 on a 9.9 yr Orbit around SgrA*
arXiv:2002.02341 · doi:10.3847/1538-4357/ab5afd
Abstract
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 instruments. The close distance of S62 to SgrA* at its periapse of around 2 mas results in a gravitational periapse shift of almost 10%/orbit.
18 pages, accepted and published by ApJ
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- Fermionic Dark Matter: Physics, Astrophysics, and Cosmology
- Near- and mid-infrared observations in the inner tenth of a parsec of the Galactic center -- Detection of proper motion of a filament very close to Sgr~A*
- The apparent tail of the Galactic center object G2/DSO
- First observed interaction of the circumstellar envelope of an S-star with the environment of Sgr A*
- Observation of the apoapsis of S62 in 2019 with NIRC2 and SINFONI
- X3: a high-mass Young Stellar Object close to the supermassive black hole Sgr~A*
- The Evaporating Massive Embedded Stellar Cluster IRS 13 Close to Sgr A*. II. Kinematic structure
- Candidate Young Stellar Objects in the S-cluster: The Kinematic Analysis of a Sub-population of the Low-mass G-objects close to Sgr A*
- Effects of non-vanishing dark matter pressure in the Milky Way galaxy