79 citations · 1.2k across the 49 of their papers we have counts for
22 papers · 1 filter
The treasure behind the haystack: MUSE analysis of five recently discovered globular clusters
F. Gran, G. Kordopatis, M. Zoccali +10
After the second data release of Gaia, the number of new globular cluster candidates has increased importantly. However, most of them need to be properly characterised, both spectr…
Spectroscopic analysis of VVV CL001 cluster with MUSE
Julio Olivares Carvajal, Manuela Zoccali, Alvaro Rojas-Arriagada +4
Like most spiral galaxies, the Milky Way contains a population of blue, metal-poor globular clusters and another of red, metal-rich ones. Most of the latter belong to the bulge, an…
Hidden in the Haystack: Low-luminosity globular clusters towards the Milky Way bulge
F. Gran, M. Zoccali, I. Saviane +8
Recent wide-area surveys have enabled us to study the Milky Way with unprecedented detail. Its inner regions, hidden behind dust and gas, have been partially unveiled with the arri…
CAPOS: The bulge Cluster APOgee Survey I. Overview and initial ASPCAP results
Doug Geisler, Sandro Villanova, Julia E. O'Connell +39
Context. Bulge globular clusters (BGCs) are exceptional tracers of the formation and chemodynamical evolution of this oldest Galactic component. However, until now, observational d…
Infrared photometry and CaT spectroscopy of globular cluster M 28 (NGC 6626)
C. Moni Bidin, F. Mauro, R. Contreras Ramos +12
Recent studies show that the inner Galactic regions host genuine bulge globular clusters, but also halo intruders, complex remnants of primordial building blocks, and objects likel…
Using classical Cepheids to study the far side of the Milky Way disk: I. Spectroscopic classification and the metallicity gradient
J. H. Minniti, L. Sbordone, A. Rojas-Arriagada +9
The structure, kinematics, and chemical composition of the far side of the Milky Way disk, beyond the bulge, are still to be revealed. Classical Cepheids (CCs) are young and lumino…
VVV-WIT-04: an extragalactic variable source caught by the VVV Survey
Roberto K. Saito, Dante Minniti, Valentin D. Ivanov +8
We report the discovery of VVV-WIT-04, a near-infrared variable source towards the Galactic disk located ~0.2 arcsec apart from the position of the radio source PMN J1515-5559. The…
A Color-Excess Extinction map of the Southern Galactic disk from the VVV and GLIMPSE Surveys
M. Soto, R. Barbá, D. Minniti +24
An improved high-resolution and deep A foreground dust extinction map is presented for the Galactic disk area within , $-1.0^{\c…
Microlensing events in the Galactic bulge
Maria Gabriela Navarro, Dante Minniti, Roberto Capuzzo-Dolcetta +2
For the first time we detected microlensing events at zero latitude in the Galactic bulge using the VISTA Variables in the Via Lactea Survey (VVV) data. We have discovered a total…
Analysis of the physical nature of 22 New VVV Survey Globular Cluster candidates in the Milky Way Bulge
Tali Palma, Dante Minniti, Javier Alonso-García +11
In order to characterize 22 new globular cluster (GC) candidates in the Galactic bulge, we present their colour-magnitude diagrams (CMDs) and Ks-band luminosity functions (LFs) usi…
Globular cluster candidates in the Galactic bulge: Gaia and VVV view of the latest discoveries
F. Gran, M. Zoccali, R. Contreras Ramos +7
Thanks to the recent wide-area photometric surveys, the number of star cluster candidates have risen exponentially in the last few years. Most detections, however, are based only o…
Discovery of Tidal RR LYRAE stars in the Bulge Globular Cluster M 62
Dante Minniti, José G. Fernández-Trincado, Vincenzo Ripepi +3
The RR Lyrae (RRL) rich globular cluster M 62 (NGC 6266) is one of the most massive globular clusters in the Milky Way, located in the dense region of the Galactic bulge, where dyn…
VVV Survey Microlensing: the Galactic Longitude Dependence
María Gabriela Navarro, Dante Minniti, Rodrigo Contreras Ramos
We completed the search for microlensing events in the zero latitude area of the Galactic bulge using the VVV Survey near-IR data obtained between 2010 and 2015. We have now a tota…
Structure and kinematics of Type II Cepheids in the Galactic bulge based on near-infrared VVV data
V. F. Braga, A. Bhardwaj, R. Contreras Ramos +5
Type II Cepheids (T2Cs) are radially pulsating variables that trace old stellar populations and provide distance estimates through their period-luminosity (PL) relation. We trace t…
Milky Way demographics with the VVV survey. IV. PSF photometry from almost one billion stars in the Galactic bulge and adjacent southern disk
Javier Alonso-García, Roberto K. Saito, Maren Hempel +10
The inner regions of the Galaxy are severely affected by extinction, which limits our capability to study the stellar populations present there. The Vista Variables in the Via Lact…
The Orbit of the new Milky Way Globular Cluster FSR1716 = VVV-GC05
Rodrigo Contreras Ramos, Dante Minniti, Jose G. Fernandez-Trincado +10
We use deep multi-epoch near-IR images of the VISTA Variables in the Via Lactea (VVV) Survey to measure proper motions (PMs) of stars in the Milky Way globular cluster FSR1716 = VV…
Proper motions in the VVV Survey: Results for more than 15 million stars across NGC 6544
R. Contreras Ramos, M. Zoccali, F. Rojas +8
Context: In the last six years, the VVV survey mapped 562 sq. deg. across the bulge and southern disk of the Galaxy. However, a detailed study of these regions, which includes $\si…
The overlooked role of stellar variability in the extended main sequence of LMC intermediate-age clusters
Ricardo Salinas, Michael A. Pajkos, Jay Strader +2
Intermediate-age star clusters in the Large Magellanic Cloud show extended main sequence turn offs (MSTOs), which are not consistent with a canonical single stellar population. The…
Discovery of RR Lyrae Stars in the Nuclear Bulge of the Milky Way
D. Minniti, R. Contreras Ramos, M. Zoccali +4
Galactic nuclei, like the one of the Milky Way, are extreme places with high stellar densities and, in most cases, hosting a supermassive black hole. One of the scenarios proposed…
Mapping the outer bulge with RRab stars from the VVV Survey
F. Gran, D. Minniti, R. K. Saito +8
The VISTA Variables in the Vía Láctea (VVV) is a near-IR time-domain survey of the Galactic bulge and southern plane. One of the main goals of this survey is to reveal the 3D struc…
Searching for variable stars in the VVV globular clusters
Javier Alonso-García, István Dékány, Márcio Catelan +2
The VVV is currently surveying the central regions of the Milky Way at near-infrared wavelengths, including 36 known Galactic globular clusters. We already have data in several fil…
Variability and star formation in Leo T, the lowest luminosity star-forming galaxy known today
Gisella Clementini, Michele Cignoni, Rodrigo Contreras Ramos +5
We present results from the first combined study of variable stars and star formation history (SFH) of the Milky Way (MW) "ultra-faint" dwarf (UFD) galaxy Leo T, based on F606W and…