Bozza, V, Shvartzvald, Y, Udalski, A, Novati, SC, Bond, IA, Han, C, Hundertmark, M, Poleski, R, Pawlak, M, Szymanski, MK, Skowron, J, Mroz, P, Kozlowski, S, Wyrzykowski, L, Pietrukowicz, P, Soszynski, I, Ulaczyk, K, Beichman, C, Bryden, G, Carey, S, Fausnaugh, M, Gaudi, BS, Gould, A, Henderson, CB, Pogge, RW, Wibking, B, Yee, JC, Zhu, W, Abe, F, Asakura, Y, Barry, RK, Bennett, DP, Bhattacharya, A, Donachie, M, Freeman, M, Fukui, A, Hirao, Y, Inayama, K, Itow, Y, Koshimoto, N, Li, MCA, Ling, CH, Masuda, K, Matsubara, Y, Muraki, Y, Nagakane, M, Nishioka, T, Ohnishi, K, Oyokawa, H, Rattenbury, N, Saito, T, Sharan, A, Sullivan, DJ, Sumi, T, Suzuki, D, Tristram, PJ, Wakiyama, Y, Yonehara, A, Choi, J-Y, Park, H, Jung, YK, Shin, I-G, Albrow, MD, Park, B-G, Kim, S-L, Lee, C-U, Cha, S-M, Kim, D-J, Lee, Y, Dominik, M, Jorgensen, UG, Andersen, MI, Bramich, DM, Burgdorf, MJ, Ciceri, S, D'Ago, G, Evans, DF, Jaimes, RF, Gu, S-H, Hinse, TC, Kains, N, Kerins, E, Korhonen, H, Kuffmeier, M, Mancini, L, Popovas, A, Rabus, M, Rahvar, S, Rasmussen, RT, Scarpetta, G, Skottfelt, J, Snodgrass, C, Southworth, J, Surdej, J, Unda-Sanzana, E, von Essen, C, Wang, Y-B, Wertz, O, Maoz, D, Friedmann, M and Kaspi, S (2016) Spitzer Observations Of Ogle-2015-blg-1212 Reveal A New Path Toward Breaking Strong Microlens Degeneracies. Astrophysical Journal, 820 (1). ISSN 0004-637X

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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.

Item Type: Article
Uncontrolled Keywords: binaries, general, Galaxy, bulge, gravitational lensing, micro, planets and satellites, detection, space vehicles
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Divisions: Faculty of Natural Sciences > School of Life Sciences
Related URLs:
Depositing User: Symplectic
Date Deposited: 14 Jun 2016 09:26
Last Modified: 15 Apr 2019 10:45

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