Astronomy and Astrophysics – Astrophysics
Scientific paper
1997-10-30
Astronomy and Astrophysics
Astrophysics
submitted to AJ, 21 pages, 5 figures
Scientific paper
10.1086/300302
We have detected seven stars with a common proper motion which are located within 2.5 arcminutes of the globular cluster NGC 6522 in the Baade's Window field of the Galactic bulge. We argue that these stars are members of the cluster, and derive a weighted mean proper motion and heliocentric radial velocity of mu_l = 1.4 +/- 0.2 mas/yr, mu_b = -6.2 +/- 0.2 mas/yr, v = -28.5 +/- 6.5 km/s. We rederive the distance to NGC 6522 (0.91 +/- 0.04 R_0, where R_0 is the Galactocentric distance) and metallicity ([Fe/H] = -1.28 +/- 0.12), making use of recent revisions in the foreground extinction toward the cluster (A_V = 1.42 +/- 0.05). We find the spatial velocity of the cluster and conclude that the cluster stays close to the Galactic center, and may have experienced significant bulge/disk shocking during its lifetime.
Gould Andrew
Popowski Piotr
Rich Robert Michael
Sadler Elaine M.
Terndrup Donald M.
No associations
LandOfFree
The Proper Motion of NGC 6522 in Baade's Window 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 Proper Motion of NGC 6522 in Baade's Window, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Proper Motion of NGC 6522 in Baade's Window will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-638864