The first confirmed microlens in a globular cluster

Details The first confirmed microlens in a globular cluster The first confirmed microlens in a globular cluster

2011-12-02

arxiv.org/abs/1112.0562v2

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

with corrected estimation of the distance to the source; in press in ApJ Letters

Scientific paper

In 2000 July/August a microlensing event occurred at a distance of 2.33 arcmin from the center of the globular cluster M22 (NGC6656), observed against the dense stellar field of the Milky Way bulge. We have used the adaptive optics system NACO at the ESO Very Large Telescope to resolve the two objects that participated in the event: the lens and the source. The position of the objects measured in 2011 July is in agreement with the observed relative proper motion of M22 with respect to the background bulge stars. Based on the brightness of the microlens components we find that the source is a solar-type star located at a distance of 6.0 +/-1.5 kpc in the bulge, while the lens is a 0.18 +/-0.01 Msun dwarf member of the globular cluster located at the known distance of 3.2 +/-0.2 kpc from the Sun.

Affiliated with

Also associated with

No associations

Rating

The first confirmed microlens in a globular cluster 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 first confirmed microlens in a globular cluster, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The first confirmed microlens in a globular cluster will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-697270