Figure 1 from Microlensing Optical Depth and Event Rate in the OGLE-IV Galactic Plane Fields

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Microlensing Optical Depth and Event Rate in the OGLE-IV Galactic Plane Fields

Authors: Przemek Mróz, Andrzej Udalski, Michał K. Szymański, Igor Soszyński, Paweł Pietrukowicz, Szymon Kozłowski, Jan Skowron, Radosław Poleski, Krzysztof Ulaczyk, Mariusz Gromadzki, Krzysztof Rybicki, Patryk Iwanek, and Marcin Wrona

2020 The Astrophysical Journal Supplement Series 249 16.

Provider: AAS Journals

Caption: Figure 1.

Upper panel: fields of the OGLE Galaxy Variability Survey are marked in red (GD), green (DG), and blue (BLG). Previously analyzed fields covering the central regions of the Galactic bulge (Mróz et al. 2019) are marked in dark gray. Filled circles mark microlensing events used for the optical depth and event rate measurements, whereas empty triangles mark possible microlensing events (see Section 3). Lower panel: surface density of source stars brighter than I = 21 in OGLE fields.

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