Published in

American Astronomical Society, Astrophysical Journal, 2(703), p. 2082-2090, 2009

DOI: 10.1088/0004-637x/703/2/2082

Links

Tools

Export citation

Search in Google Scholar

Extreme Magnification Microlensing Event OGLE-2008-BLG-279: Strong Limits on Planetary Companions to the Lens Star

Journal article published in 2009 by The microFUN, Jc C. Yee, A. Udalski, T. Sumi, L. A. G. Monard, Subo Dong, S. Kozłowski, Jc C. Bird, A. Cole ORCID, D. Higgins, J. Mccormick, Lag Monard, D. Polishook ORCID, A. Shporer, O. Spector and other authors.
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

Full text: Download

Red circle
Preprint: archiving forbidden
Red circle
Postprint: archiving forbidden
Green circle
Published version: archiving allowed
Upload
Policy details
Data provided by SHERPA/RoMEO

Abstract

25 pages, 7 figures, submitted to ApJ ; International audience ; We analyze the extreme high-magnification microlensing event OGLE-2008-BLG-279, which peaked at a maximum magnification of A ~ 1600 on 2008 May 30. The peak of this event exhibits both finite-source effects and terrestrial parallax, from which we determine the mass of the lens, Ml = 0.64 ± 0.10 M sun, and its distance, Dl = 4.0 ± 0.6 kpc. We rule out Jupiter-mass planetary companions to the lens star for projected separations in the range 0.5-20 AU. More generally, we find that this event was sensitive to planets with masses as small as 0.2 \;M_⊕ ≃ 2 \;M_{Mars} with projected separations near the Einstein ring (~3 AU).