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VVV Survey Microlensing: Catalog of Best and Forsaken Events
- Publication Year :
- 2019
-
Abstract
- We search for microlensing events in the zero-latitude area of the Galactic Bulge using the VVV Survey near-IR data. We have discovered a total sample of $N=630$ events within an area covering $20.68 deg^2$ between the years 2010 and 2015. In this paper we describe the search and present the data for the final sample, including near-IR magnitudes, colors and proper motions, as well as the standard microlensing parameters. We use the near-IR Color-Magnitude and Color-Color Diagram to select $N_{RC}=290$ events with red-clump sources to analyze the extinction properties of the sample in the central region of the Galactic plane. The timescale distribution and its dependence in the longitude axis is presented. The mean timescale decreases as we approach the Galactic minor axis ($b=0$ deg). Finally, we give examples of special microlensing events, such as binaries, short timescale events, and events with strong parallax effect.<br />Comment: 51 pages, 26 figures, 4 tables. Accepted - The Astrophysical Journal
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.1907.04339
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.3847/1538-4357/ab7a9d