The Open UniversitySkip to content

The OGLE-III planet detection efficiency from six years of microlensing observations (2003–2008)

Tsapras, Y.; Hundertmark, M.; Wyrzykowski, Ł.; Horne, K.; Udalski, A.; Snodgrass, C.; Street, R.; Bramich, D. M.; Dominik, M.; Bozza, V.; Figuera Jaimes, R.; Kains, N.; Skowron, J.; Szymański, M. K.; Pietrzyński, G.; Soszyński, I.; Ulaczyk, K.; Kozłowski, S.; Pietrukowicz, P. and Poleski, R. (2016). The OGLE-III planet detection efficiency from six years of microlensing observations (2003–2008). Monthly Notices of the Royal Astronomical Society, 457(2) pp. 1320–1331.

Full text available as:
PDF (Version of Record) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (4MB) | Preview
DOI (Digital Object Identifier) Link:
Google Scholar: Look up in Google Scholar


We use six years (2003–2008) of Optical Gravitational Lensing Experiment-III microlensing observations to derive the survey detection efficiency for a range of planetary masses and projected distances from the host star. We perform an independent analysis of the microlensing light curves to extract the event parameters and compute the planet detection probability given the data. 2433 light curves satisfy our quality selection criteria and are retained for further processing. The aggregate of the detection probabilities over the range explored yields the expected number of microlensing planet detections. We employ a Galactic model to convert this distribution from dimensionless to physical units, α/au and M. The survey sensitivity to small planets is highest in the range 1–4 au, shifting to slightly larger separations for more massive ones.

Item Type: Journal Item
Copyright Holders: 2016 The Authors
ISSN: 0035-8711
Keywords: gravitational lensing; micro – planetary systems
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Research Group: Space
Item ID: 46892
Depositing User: Colin Snodgrass
Date Deposited: 29 Jul 2016 13:47
Last Modified: 12 Jun 2020 12:41
Share this page:


Altmetrics from Altmetric

Citations from Dimensions

Download history for this item

These details should be considered as only a guide to the number of downloads performed manually. Algorithmic methods have been applied in an attempt to remove automated downloads from the displayed statistics but no guarantee can be made as to the accuracy of the figures.

Actions (login may be required)

Policies | Disclaimer

© The Open University   contact the OU