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The VVV survey: results and future – Dante Minniti (Andres Bello Universidad, Chile)
25 de outubro de 2017: 12:30 - 14:00
1. Universidad Andres Bello,
2. Millennium Institute of Astrophysics,
3. Center for Astrophysics and Associated Technologies,
4. Vatican Observatory
The ESO Public Survey VISTA Variables in the Via Lactea (VVV) has been mapping the Milky Way bulge and the Southern mid-plane in the near-IR since 2010. An extension of this survey started to map the gaps left between the coverage of the VISTA Hemisphere Survey and the VVV Survey. This VVV eXtended Survey (VVVX) would take about 200 nights in total, covering 2×10^9 point sources within an area of about 1700 sq deg. The area survey includes about 50 known globular clusters, and >1000 known open clusters, with many more clusters to be found. The final products will be deep JHKs-band images, and catalogues of variable point sources, and of proper motions. The main aims are to study the different stellar populations present in the inner Galaxy, and to produce a 3-D map of the surveyed region using well-known distance indicators (such as RR Lyrae, Cepheids, and red clump giants). In order to do all this, it is critical to have a good understanding of the effects of reddening and extinction. Within the existing bulge VVV area proper motions would also be available. In particular, the VVVX results will be an essential complement to forthcoming near-IR multiplexing spectrographs (MOONS, APOGEE-S). In addition, the VVVX survey results will complement the expected measurements from important space missions (GAIA, WFIRST).