University of Tasmania
Browse

File(s) under permanent embargo

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

journal contribution
posted on 2023-05-17, 00:13 authored by Yee, JC, Udalski, A, Sumi, T, Dong, S, Kozlowski, S, Bird, JC, Andrew ColeAndrew Cole, Higgins, D, McCormick, J, Monard, LAG, Polishook, D, Shporer, A, Spector, O, Szymanski, MK, Kubiak, M, Pietrzynski, G, Soszynski, I, Szewczyk, O, Ulaczyk, K, Wyrzykowski, L, Poleski, R, Allen, W, Bos, M, Christie, GW, DePoy, DL, Eastman, JD, Gaudi, BS, Gould, A, Han, C, Kaspi, S, Lee, CU, Mallia, F, Maury, A, Maoz, D, Natusch, T, Park, BG, Pogge, RW, Santallo, R, Abe, F, Bond, IA, Fukui, A, Furusawa, K, Hearnshaw, JB, Hosaka, S, Itow, Y, Kamiya, K, Korpela, AV, Kilmartin, PM, Lin, W, Ling, CH, Makita, S, Masuda, K, Matsubara, Y, Miyake, N, Muraki, Y, Nagaya, M, Nishimoto, K, Ohnishi, K, Perrott, YC, Rattenbury, NJ, Sako, T, Saito, T, Skuljan, L, Sullivan, DJ, Sweatman, WL, Tristram, PJ, Yock, PCM, Albrow, MD, Batista, V, Fouque, P, Beaulieu, JP, Bennett, DP, Cassan, A, Comparat, J, Coutures, C, Dieters, S, Greenhill, JG, Horne, K, Kains, N, Kubas, D, Martin, R, Menzies, J, Wambsganss, J, Williams, A, Zub, M
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 , 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 with projected separations near the Einstein ring (~3 AU).

History

Publication title

The Astrophysical Journal: An International Review of Astronomy and Astronomical Physics

Volume

703

Pagination

2082-2090

ISSN

0004-637X

Department/School

School of Natural Sciences

Publisher

Univ Chicago Press

Place of publication

1427 E 60Th St, Chicago, USA, Il, 60637-2954

Rights statement

Copyright © 2009 The American Astronomical Society

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the mathematical sciences

Usage metrics

    University Of Tasmania

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC