A Low‐Mass Planet with a Possible Sub‐Stellar‐Mass Host in Microlensing Event MOA‐2007‐BLG‐192

P. Bennett, D.; A. Bond, I.; Udalski, A.; Sumi, T.; Abe, F.; Fukui, Akihiko; Furusawa, K.; B. Hearnshaw, J.; Holderness, S.; Itow, Y.; Kamiya, K.; Korpela, A.; M. Kilmartin, P.; Lin, W.; H. Ling, C.; Masuda, K.; Matsubara, Y.; Miyake, N.; Muraki, Y.; Nagaya, M.; Okumura, Teppei; Ohnishi, Kei; C. Perrott, Y.; J. Rattenbury, Nicholas; Sako, T.; Saito, To.; Sato, S.; Skuljan, L.; J. Sullivan, D.; L. Sweatman, W.; J. Tristram, P.; C. M. Yock, P.; Kubiak, M.; K. Szymański, M.; Pietrzyński, G.; Soszyński, I.; Szewczyk, O.; Wyrzykowski, Ł.; Ulaczyk, K.; Batista, V.; Beaulieu, Jean‐Philippe; Brillant, S.; Cassan, A.; Fouqué, P.; Kervella, P.; Kubas, D.; B. Marquette, J.

doi:10.1086/589940

Public

A Low‐Mass Planet with a Possible Sub‐Stellar‐Mass Host in Microlensing Event MOA‐2007‐BLG‐192

Published in The Astrophysical Journal • Aug 26, 2008

Authors:

D. P. Bennett

I. A. Bond

A. Udalski

Abstract

We report the detection of an extrasolar planet of mass ratio q ∼ 2 × 10 −4 in microlensing event MOA-2007-BLG-192. The best-fit microlensing model shows both the microlensing parallax and finite source effects, and these can be combined to obtain the lens masses of M = 0.060 + 0.028 −0.021 M ☉ for ...

Subject

Gravitational microlensing

Physics

Planet

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