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VVV Microlensing events in the far side of the Milky Way

Published online by Cambridge University Press:  14 May 2020

María Gabriela Navarro Open the ORCID record for María Gabriela Navarro [Opens in a new window] ,
Dante Minniti  and
Rodrigo Contreras Ramos
María Gabriela Navarro
Affiliation:
Departamento de Ciencias Físicas, Facultad de Ciencias Exactas, Universidad Andrés Bello, Av. Fernández Concha 700, Las Condes, Santiago, Chile Dipartimento di Fisica, Università di Roma La Sapienza, P.le Aldo Moro, 2, I00185 Rome, Italy email: mariagabriela.navarro@uniroma1.it Millennium Institute of Astrophysics, Av. Vicuña Mackenna 4860, 782-0436, Santiago, Chile
Dante Minniti
Affiliation:
Departamento de Ciencias Físicas, Facultad de Ciencias Exactas, Universidad Andrés Bello, Av. Fernández Concha 700, Las Condes, Santiago, Chile Millennium Institute of Astrophysics, Av. Vicuña Mackenna 4860, 782-0436, Santiago, Chile Vatican Observatory, V00120 Vatican City State, Italy
Rodrigo Contreras Ramos
Affiliation:
Millennium Institute of Astrophysics, Av. Vicuña Mackenna 4860, 782-0436, Santiago, Chile Instituto de Astrofísica, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, 782-0436 Macul, Santiago, Chile
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Abstract

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In order to study the most reddened areas of the Milky Way we used near-IR data from the VVV Survey. For the first time, the VISTA telescope allows us to observe the mid-plane through the Galactic bulge and study the disk in the other side of the Milky Way. Motivated by the detection of hundreds of microlensing events in the inner regions of the Galaxy, we propose three new configurations of microlensing events, placing the sources in the far-disk and the lenses in the far-disk/bulge/near-disk. These new configurations will change the usual way to interpret the timescale distributions due to the different populations along the line of sight, that exhibit varied transverse velocities and relative distances.

Keywords

Galaxy: bulgeGalaxy: structuregravitational lensing
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S353: Galactic Dynamics in the Era of Large Surveys , June 2019 , pp. 35 - 37
Copyright
© International Astronomical Union 2020

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