Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-07-12
Astrophys.J. 579 (2002) 660-670
Astronomy and Astrophysics
Astrophysics
31 pages including 11 figures, accepted by ApJ
Scientific paper
10.1086/342920
HST imaging of M22 has allowed, for the first time, a detailed and uniform mapping of mass segregation in a globular cluster. Luminosity and mass functions from the turnoff down to the mid to lower main sequence are presented for M22 in annular bins from the centre of the cluster out to five core radii. Within the core, a significant enhancement is seen in the proportion of 0.5-0.8 M(sun) stars compared with their numbers outside the core. Numerical modelling of the spatial mass spectrum of M22 shows that the observed degree of mass segregation can be accounted for by relaxation processes within the cluster. The global cluster mass function for M22 is flatter than the Salpeter IMF and cannot be represented by a single power law.
Albrow Michael D.
de Marchi Guido
Sahu Kailash C.
No associations
LandOfFree
The Spatially-Resolved Mass Function of the Globular Cluster M22 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 The Spatially-Resolved Mass Function of the Globular Cluster M22, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Spatially-Resolved Mass Function of the Globular Cluster M22 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-709958