Radial velocities of five globular clusters obtained with AAOmega

Details Radial velocities of five globular clusters obtained with AAOmega Radial velocities of five globular clusters obtained with AAOmega

2007-05-24

arxiv.org/abs/0705.3562v1

Astronomy and Astrophysics

Astrophysics

4 pages, 6 figures, accepted for publication by Astronomische Nachrichten

Scientific paper

10.1002/asna.200710819

Using the recently commissioned multi-object spectrograph AAOmega on the 3.9m AAT we have obtained medium-resolution near-infrared spectra for 10,500 stars in and around five southern globular clusters. The targets were 47 Tuc, M12, M30, M55 and NGC 288. We have measured radial velocities to +/- 1 km/s with the cross correlation method and estimated metallicity, effective temperature, surface gra vity and rotational velocity for each star by fitting synthetic model spectra. An analysis of the velocity maps and velocity dispersion of member stars revealed systemic rotation in four of the target clusters.

Affiliated with

Also associated with

No associations

Rating

Radial velocities of five globular clusters obtained with AAOmega 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 Radial velocities of five globular clusters obtained with AAOmega, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radial velocities of five globular clusters obtained with AAOmega will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-606215