Mass estimates from stellar proper motions: The mass of $ω$ Centauri

Details Mass estimates from stellar proper motions: The mass of $ω$ Centauri Mass estimates from stellar proper motions: The mass of $ω$ Centauri

2005-03-14

arxiv.org/abs/astro-ph/0503299v2

Astronomy and Astrophysics

Astrophysics

6 pages, 4 figures, Re-submitted to MNRAS. Strict cut-offs have been applied to take care of outliers and field stars in the s

Scientific paper

A projected mass estimator and a maximum likelihood estimator are developed to best determine the mass of stellar clusters from proper motion data. Both methods effectively account and correct for errors in the velocities, and provide an unbiased and robust estimate of the cluster mass. Using an extensive proper motion study of $\omega$ Centauri by van Leeuwen et al. (2000), we estimate the mass of $\omega$ Centauri using these two different methods to be $2.8 \times 10^{6} M_{\odot} \left[d/5.1 kpc\right]^{3}$. Within this modeling context, the statistical error is $3\%$ and the systematic error is $4\%$.

Affiliated with

Also associated with

No associations

Rating

Mass estimates from stellar proper motions: The mass of $ω$ Centauri 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 Mass estimates from stellar proper motions: The mass of $ω$ Centauri, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mass estimates from stellar proper motions: The mass of $ω$ Centauri will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-659589