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On Planetary Companions to the MACHO 98-BLG-35 Microlens Star

Rhie, S.; Bennett, D P; Becker, Andrew C; Peterson, Bruce; Fragile, P C; Johnson, B Ronald; Quinn, Jason L; Crouch, A; Gray, J; King, Lynette J; Messenger, B; Thomson, S; Bond, I A; Abe, F; Carter, Bradley Darren; Dodd, R J; Hearnshaw, J B; Honda, M; Jugaku, J; Kabe, S; Kilmartin, P M; Koribalski, Baerbel S; Masuda, K; Matsubara, Y; Muraki, Y; Nakamura, T; Nankivell, G R; Noda, S; Rattenbury, N J; Reid, MD; Rumsey, N J; Saito, To; Yock, P C M; Yoshizawa, M


We present observations of the microlensing event MACHO 98-BLG-35, which reached a peak magnification factor of almost 80. These observations by the Microlensing Planet Search (MPS) and MOA collaborations place strong constraints on the possible planetary system of the lens star and show intriguing evidence for a low-mass planet with a mass fraction 4 × 10-5 ≤ ε ≤ 2 × 10-4. A giant planet with ε = 10-3 is excluded from 95% of the region between 0.4 and 2.5 RE from the lens star, where RE is the...[Show more]

CollectionsANU Research Publications
Date published: 2000
Type: Journal article
Source: Astrophysical Journal, The


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