| タイトル | Spitzer Observations of OGLE-2015-BLG-1212 Reveal a New Path toward Breaking Strong Microlens Degeneracies |
| 著者（英） | Beichman, C.; Bozza, V.; Ulaczyk, K.; Poleski, R.; Pietrukowicz, P.; Mroz, P.; Soszynski, I.; Hundertmark, M.; Barry, Richard K.; Fausnaugh, M.; Skowron, J.; Bennett, D. P.; Novati, S.Calchi; Wyrzykowski, L.; Shvartzvald, Y.; Kozłowski, S.; Carey, S.; Gaudi, B. S.; Szymanski, M. K.; Pawlak, M.; Udalski, A.; Bryden, G.; Han, C.; Gould, A.; Bond, I. A. |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 2016-03-21 |
| 言語 | eng |
| 内容記述 | Spitzer microlensing parallax observations of OGLE-2015-BLG-1212 decisively break a degeneracy between planetary and binary solutions that is somewhat ambiguous when only ground-based data are considered. Only eight viable models survive out of an initial set of 32 local minima in the parameter space. These models clearly indicate that the lens is a stellar binary system possibly located within the bulge of our Galaxy, ruling out the planetary alternative. We argue that several types of discrete degeneracies can be broken via such space-based parallax observations. |
| NASA分類 | Astrophysics |
| レポートNO | GSFC-E-DAA-TN40854
GSFC-E-DAA-TN48032 |
| 権利 | Copyright |
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