VISTA variable survey in the Milky Way

Details VISTA variable survey in the Milky Way VISTA variable survey in the Milky Way

Apr 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010iaus..262..287h&link_type=abstract

Stellar Populations – Planning for the Next Decade, Proceedings of the International Astronomical Union, IAU Symposium, Volume 2

Other

Surveys, Stars: Variables: Cepheids, Stars: Variables: Other, Galaxy: Bulge, Galaxy: Disk

Scientific paper

Over the next 5 years the VVV collaboration (Vista Variable in the Via Lactea) will conduct an extensive survey of the galactic bulge and disk in the near-IR, using the new VISTA telescope. This public survey covers a field of 520 sqr. deg, including not only regions of high star formation, but also 33 known globular clusters and ~350 open clusters. The final product will be a deep IR atlas in 5 passbands for ~109 point sources among which we expect 106 variable stars. These will be produce a 3-D map of the surveyed region using well-understood primary distance indicators such as RR Lyrae stars. The observations will be combined with data from MACHO, OGLE, EROS, VST, Spitzer, HST, Chandra, Integral, and ALMA for a complete understanding of the variable sources in the inner Milky Way. Several important implications for the history of the Milky Way, for globular cluster evolution, for the population census of the bulge and center, and for the pulsation theory will follow from this survey.

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