Prospects for the Determination of Star Orbits Near the Galactic Center

Details Prospects for the Determination of Star Orbits Near the Galactic Center Prospects for the Determination of Star Orbits Near the Galactic Center

1999-03-23

arxiv.org/abs/astro-ph/9903354v1

Astronomy and Astrophysics

Astrophysics

13 pages, 5 figures, accepted by ApJ

Scientific paper

10.1086/307588

We simulate the observations of proper motion of stars very close to the Galactic Center. We show that the speckle interferometry done with the Keck II telescope is accurate enough to obtain orbital parameters for stars with the period P about 10 y during 10 seasons of astrometric observations made once a year. The determination of a single orbit will give central mass estimate with the typical uncertainty of the existing mass determinations based on velocity dispersion measurements. A much higher precision orbits will be measured in several years when Keck Interferometer becomes operational, and fainter stars are discovered even closer to Sgr A*. Astrometry alone will provide accurate determination of the ratio: M/D^3, where M is the black hole mass and D is the distance to the Galactic Center. If spectroscopic orbits of the stars are also measured then both: M and D will be precisely determined.

Affiliated with

Also associated with

No associations

Rating

Prospects for the Determination of Star Orbits Near the Galactic Center does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Prospects for the Determination of Star Orbits Near the Galactic Center, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Prospects for the Determination of Star Orbits Near the Galactic Center will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-431858