|
| | | | |
| | | |
| Stat |
Members: 3662
Articles: 2'599'751
Articles rated: 2609
14 December 2024 |
|
| | | | |
|
Article overview
| |
|
|
The first direct detection of a gravitational microlens toward the Galactic bulge | | S. Kozlowski
; P. R. Wozniak
; S. Mao
; A. Wood
; | | Date: |
17 Jan 2007 | | Abstract: | We present a direct detection of the gravitational lens that caused the microlensing event MACHO-95-BLG-37. This is the first fully resolved microlensing system involving a source in the Galactic bulge, and the second such system in general. The lens and source are clearly resolved in images taken with the High Resolution Channel of the Advanced Camera for Surveys on board the Hubble Space Telescope (HST) ~9 years after the microlensing event. Only one plausible scenario fits all currently available data without invoking unusual physics or geometry. The lens is most likely a 0.6 solar mass main-sequence star of spectral type K2 with a sub-solar metallicity and located at a distance of ~3.5 kpc. However, in the view of challenges and limitations of the present data combined with a natural scatter in the physical properties of stars in the Galaxy, it is possible that different solutions will be found with the addition of new observations. | | Source: | arXiv, astro-ph/0701488 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
|
| |
|
|
|
REGISTER