STREGA: STRucture and Evolution of the GAlaxy. I. Survey Overview and First Results
M. Marconi, I. Musella, M. Di Criscienzo, M. Cignoni, M. Dall'Ora, G., Bono, V. Ripepi, E. Brocato, G. Raimondo, A. Grado, L. Limatola, G. Coppola,, M.I. Moretti, P.B. Stetson, A. Calamida, M. Cantiello, M. Capaccioli, E., Cappellaro, M.-R.L. Cioni, S. Degl'Innocenti

TL;DR
STREGA is a comprehensive survey using the VST telescope to map the Galactic halo, aiming to understand galaxy formation and evolution through stellar tracers and preliminary analysis of stellar density profiles around omega Centauri.
Contribution
This paper introduces the STREGA survey, detailing its design, methods, and initial findings, including the stellar density profile and extratidal stars around omega Centauri.
Findings
Detected extratidal cluster stars around omega Centauri.
Confirmed the cluster's tidal radius at about 1.2 degrees.
Provided preliminary stellar density profiles for the surveyed region.
Abstract
STREGA (STRucture and Evolution of the GAlaxy) is a Guaranteed Time survey being performed at the VST (the ESO VLT Survey Telescope) to map about 150 square degrees in the Galactic halo, in order to constrain the mechanisms of galactic formation and evolution. The survey is built as a five-year project, organized in two parts: a core program to explore the surrounding regions of selected stellar systems and a second complementary part to map the southern portion of the Fornax orbit and extend the observations of the core program. The adopted stellar tracers are mainly variable stars (RR~Lyraes and Long Period Variables) and Main Sequence Turn-off stars for which observations in the g,r,i bands are obtained. We present an overview of the survey and some preliminary results for three observing runs that have been completed. For the region centered on ~Cen (37 deg^2), covering…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
