VVV Survey Microlensing: Catalog of Best and Forsaken Events

María Gabriela Navarro, Rodrigo Contreras Ramos, Dante Minniti, Joyce Pullen, Roberto Capuzzo-Dolcetta, Philip W. Lucas

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Resumen

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 deg2 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 diagrams 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 = 0ˆ). Finally, we give examples of special microlensing events, such as binaries, short-timescale events, and events with a strong parallax effect.

Idioma originalInglés
Número de artículo65
PublicaciónAstrophysical Journal
Volumen893
N.º1
DOI
EstadoPublicada - 10 abr 2020

Áreas temáticas de ASJC Scopus

  • Astronomía y astrofísica
  • Ciencias planetarias y espacial

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