409 citations · 1.4k across the 36 of their papers we have counts for
36 papers
The VISTA Variables in the Vía Láctea eXtended (VVVX) ESO public survey: Completion of the observations and legacy
R. K. Saito, M. Hempel, J. Alonso-García +143
The ESO public survey VISTA Variables in the Vía Láctea (VVV) surveyed the inner Galactic bulge and the adjacent southern Galactic disk from . Upon its conclusion, the c…
CAPOS: The bulge Cluster APOgee Survey IV. Elemental Abundances of the bulge globular cluster NGC 6558
Danilo González-Díaz, José G. Fernández-Trincado, Sandro Villanova +12
This study presents the results concerning six red giant stars members of the globular cluster NGC 6558. Our analysis utilized high-resolution near-infrared spectra obtained throug…
Ca Triplet Metallicities and Velocities for twelve Globular Clusters towards the Galactic Bulge
D. Geisler, M. C. Parisi, B. Dias +6
Globular clusters (GCs) are excellent tracers of the formation and early evolution of the Milky Way. The bulge GCs (BGCs) are particularly important because they can reveal vital i…
High-resolution extinction map in the direction of the strongly obscured bulge fossil fragment Liller 1
Cristina Pallanca, Francesco R. Ferraro, Barbara Lanzoni +12
We used optical images acquired with the Wide Field Camera of the Advanced Camera for Surveys onboard the Hubble Space Telescope and near-infrared data from GeMS/GSAOI to construct…
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…
Assessing the stellar population and the environment of an HII region on the far side of the Galaxy
A. -N. Chené, R. A. Benjamin, S. Ramírez Alegría +15
We have investigated the stellar and interstellar content of the distant star formation region IRAS 17591-2228 (WISE HII region GAL 007.47+0.06). It is associated to a water maser,…
A new class of fossil fragments from the hierarchical assembly of the Galactic bulge
F. R. Ferraro, C. Pallanca, B. Lanzoni +12
The formation and evolutionary processes of galaxy bulges are still unclear, and the presence of young stars in the bulge of the Milky Way is largely debated. We recently demonstra…
VVVX-Gaia Discovery of a Low Luminosity Globular Cluster in the Milky Way Disk
E. R. Garro, D. Minniti, M. Gómez +20
Milky Way globular clusters (MW GCs) are difficult to identify at low Galactic latitudes because of high differential extinction and heavy star crowding. The new deep near-IR image…
A panchromatic view of the bulge globular cluster NGC 6569
S. Saracino, E. Dalessandro, F. R. Ferraro +12
We used high-resolution optical HST/WFC3 and multi-conjugate adaptive optics assisted GEMINI GeMS/GSAOI observations in the near-infrared to investigate the physical properties of…
Chemical analysis of NGC 6528: one of the most metal-rich bulge globular cluster
C. Muñoz, D. Geisler, S. Villanova +6
The Bulge Globular Clusters (GCs) are key tracers of this central ancient component of our Galaxy. It is essential to understand their formation and evolution to study that of the…
Deep Hubble Space Telescope Imaging of Globular Clusters Towards the Galactic Bulge: Observations, Data Reduction and Color-Magnitude Diagrams
Roger E. Cohen, Francesco Mauro, Javier Alonso-García +5
The Galactic globular clusters (GGCs) located towards the Galactic bulge have generally been excluded from large-scale photometric GGC surveys due to severe total and differential…
On the use of the main sequence knee (saddle) to measure globular cluster ages
S. Saracino, E. Dalessandro, F. R. Ferraro +11
In this paper we review the operational definition of the so-called main sequence knee (MS-knee), a feature in the color-magnitude diagram (CMD) occurring at the low-mass end of th…
Uncovering Multiple Populations in NGC 7099 (M 30) using Washington Photometry
Heinz Frelijj, Douglas Geisler, Jeffrey Cummings +5
Over the last decade, the classical definition of Globular Clusters (GCs) as simple stellar populations was revolutionized due to the discovery of "Multiple Populations" (MPs). How…
FSR 1716: A new Milky Way Globular Cluster confirmed using VVV RR Lyrae stars
Dante Minniti, Tali Palma, Istvan Dékány +35
We use deep multi-epoch near-IR images of the VISTA Variables in the Vía Láctea (VVV) Survey to search for RR Lyrae stars towards the Southern Galactic plane. Here we report the di…
GeMS/GSAOI photometric and astrometric performance in dense stellar fields
E. Dalessandro, S. Saracino, L. Origlia +7
Ground-based imagers at 8m class telescopes assisted by Multi conjugate Adaptive Optics are primary facilities to obtain accurate photometry and proper motions in dense stellar fie…
Near-Infrared Photometry of Globular Clusters Towards the Galactic Bulge: Observations and Photometric Metallicity Indicators
Roger E. Cohen, Christian Moni Bidin, Francesco Mauro +2
We present wide field JHKs photometry of 16 Galactic globular clusters located towards the Galactic bulge, calibrated on the 2MASS photometric system. Differential reddening correc…
Ultra-deep GEMINI near-infrared observations of the bulge globular cluster NGC 6624
S. Saracino, E. Dalessandro, F. R. Ferraro +8
We used ultra-deep and images secured with the near-infrared GSAOI camera assisted by the multi-conjugate adaptive optics system GeMS at the GEMINI South Telescope in Chi…
Wide Field Near-Infrared Photometry of 12 Galactic Globular Clusters: Observations Versus Models on the Red Giant Branch
Roger E. Cohen, Maren Hempel, Francesco Mauro +3
We present wide field near-infrared photometry of 12 Galactic globular clusters, typically extending from the tip of the cluster red giant branch (RGB) to the main sequence turnoff…
GEMINI/GeMS observations unveil the structure of the heavily obscured globular cluster Liller 1
S. Saracino, E. Dalessandro, F. R. Ferraro +7
By exploiting the exceptional high-resolution capabilities of the near-IR camera GSAOI combined with the multi-conjugate adaptive optics system GeMS at the GEMINI South Telescope,…
Stroemgren - near-infrared photometry of the Baade's Window. I. The bulge globular cluster NGC6528 and the surrounding field
Annalisa Calamida, Giuseppe Bono, Edoardo P. Lagioia +9
We present Stroemgren-NIR photometry of NGC6528 and its surroundings in the Baade's Window. uvby images were collected with EFOSC2@NTT, while NIR catalogs are based on VIRCAM@VISTA…
Deriving Metallicities from Calcium Triplet Spectroscopy in combination with Near Infrared Photometry
F. Mauro, C. Moni Bidin, D. Geisler +7
Context. [...] One of the most efficient methods is the measurement of the equivalent width (EW) of the Calcium II Triplet (CaT), corrected for the luminosity and temperature effec…
Investigating potential planetary nebula/cluster pairs
Christian Moni Bidin, Daniel Majaess, Charles Bonatto +10
Fundamental parameters characterizing the end-state of intermediate-mass stars may be constrained by discovering planetary nebulae (PNe) in open clusters (OCs). Cluster membership…
Stellar Variability in the VVV survey
M. Catelan, D. Minniti, P. W. Lucas +34
The Vista Variables in the Vía Láctea (VVV) ESO Public Survey is an ongoing time-series, near-infrared (IR) survey of the Galactic bulge and an adjacent portion of the inner disk,…