VVV Survey microlensing events in the Gal. Bulge Virtual Observatory Resource

Authors
  1. Navarro M.G.
  2. Contreras Ramos R.
  3. Minniti D.
  4. Pullen J.,Capuzzo-Dolcetta R.
  5. Lucas P.W.
  6. Published by
    CDS
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 20.68deg^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 diagrams to select NRC=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 a strong parallax effect.

Keywords
  1. Milky Way Galaxy
  2. Gravitational lensing
  3. Infrared photometry
  4. Surveys
Bibliographic source Bibcode
2020ApJ...893...65N
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/893/65
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJ/893/65
Document Object Identifer DOI
doi:10.26093/cds/vizier.18930065

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History

2021-09-28T14:26:10Z
Resource record created
2021-09-28T14:26:10Z
Created
2022-01-19T11:43:07Z
Updated

Contact

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