Spitzer Space Telescope Observations of the Aftermath of Microlensing Event MACHO-LMC-5

Details Spitzer Space Telescope Observations of the Aftermath of Microlensing Event MACHO-LMC-5 Spitzer Space Telescope Observations of the Aftermath of Microlensing Event MACHO-LMC-5

2004-06-01

arxiv.org/abs/astro-ph/0406040v1

Astronomy and Astrophysics

Astrophysics

Accepted for publication, ApJS Spitzer Special Issue

Scientific paper

We have carried out photometry of the microlensing event MACHO-LMC-5 with Spitzer's IRAC ten years after the magnification of the LMC source star was recorded. This event is unique in the annals of gravitational microlensing: the lensing star itself has been observed using HST (once with WFPC2 and twice with ACS/HRC). Since the separation between the source and lens at the epoch of the Spitzer observations was $\sim0.24''$, the two stars cannot be resolved in the Spitzer images. However, the IRAC photometry clearly establishes that the lens is a M5 dwarf star from its infrared excess, which in turn yields a mass of $\sim0.2 M_{\odot}$. This demonstrates the potential of Spitzer to detect the lenses in other gravitational microlensing events.

Affiliated with

Also associated with

No associations

Rating

Spitzer Space Telescope Observations of the Aftermath of Microlensing Event MACHO-LMC-5 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 Spitzer Space Telescope Observations of the Aftermath of Microlensing Event MACHO-LMC-5, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spitzer Space Telescope Observations of the Aftermath of Microlensing Event MACHO-LMC-5 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-348138