44 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Consejo Nacional de Investigaciones Científicas y TécnicasAR46 papers
- Universidad Nacional de CuyoAR20 papers
- Universidad Nacional de CórdobaAR7 papers
- Universidad Nacional de La PlataAR6 papers
- Millennium Institute of AstrophysicsCL5 papers
- European Southern ObservatoryCL4 papers
- University of TarapacáCL4 papers
- IMDEA MaterialsES3 papers
- Instituto de Física La PlataAR3 papers
- Pontificia Universidad Católica de ChileCL3 papers
- Universidad Andrés BelloCL3 papers
- University of ConcepciónCL3 papers
33 papers · 1 filter
The apparent Large Magellanic Cloud star cluster age gap
Jonathan H. Klos, Andrés E. Piatti
In the Large Magellanic Cloud (LMC), there have been very few clusters observed with ages between 4 and 11 Gyr. This phenomenon is sometimes referred to as the `LMC age gap'. We co…
Probing the farthest star clusters to the Small Magellanic Cloud
A. E. Piatti, D. M. F. Illesca, M. Chiarpotti +1
The Small Magellanic Cloud (SMC) has been tidally shaped by the interaction with the Large Magellanic Cloud (LMC). The scope of such an interaction has recently been studied from d…
The dual nature of the tidal tails of NGC 5904 (M5)
Andrés E. Piatti
The tangential velocity dispersion of stars belonging to the Milky Way globular cluster's tidal tails has recently been found from N-body simulations to be a parameter that disting…
The Origin of the Large Magellanic Cloud Globular Cluster NGC 2005
Andrés E. Piatti, Yutaka Hirai
The ancient Large Magellanic Cloud (LMC) globular cluster NGC 2005 has recently been reported to have an ex-situ origin, thus, setting precedents that the LMC could have partially…
Catching a Milky Way open cluster in its last breath
Andrés E. Piatti
Theoretical models have suggested peculiar velocity dispersion profiles of star clusters facing dissolution. They predicted that, besides bound stars that still belong to the star…
Assessing the physical reality of Milky Way open cluster candidates
A. E. Piatti, D. M. F. Illesca, A. A. Massara +4
We report results on the analysis of eleven new Milky Way open cluster candidates, recently discovered from the detection of stellar overdensities in the Vector Point diagram, by e…
First evidence of a stripped star cluster from the Small Magellanic Cloud
Andrés E. Piatti, Scott Lucchini
We present results on the recently discovered stellar system YMCA-1, for which physical nature and belonging to any of the Magellanic System galaxies have been irresolutely analyze…
Metallicities and ages for star clusters and their surrounding fields in the Large Magellanic Cloud
W. Narloch, G. Pietrzyński, W. Gieren +15
We study 147 star clusters in the Large Magellanic Cloud (LMC) in order to determine their mean metallicities and ages, as well as the mean metallicities of 80 surrounding fields.…
On the physical size of the Milky Way globular cluster NGC 7089 (M 2)
Andrés E. Piatti
We study the outer regions of the Milky Way globular cluster NGC 7089 based on new Dark Energy Camera (DECam) observations. The resulting background cleaned stellar density profile…
A genuine Large Magellanic Cloud age gap star cluster
Andrés E. Piatti
We confirm the existence of a second Large Magellanic Cloud (LMC) star cluster, KMHK 1592, with an age that falls in the middle of the so-called LMC star cluster age gap, a long pe…
First evidence of a collision between two unrelated open clusters in the Milky Way
Andrés E. Piatti, Khyati Malhan
We report the first evidence of an on-going collision between two star clusters in our Galaxy, namely IC 4665 and Collinder 350. These are open clusters located at a distance of ~3…
DECam photometry reveals extra-tidal stars around the Milky Way globular cluster NGC 6864 (M75)
Andrés E. Piatti
Globular clusters are prone to lose stars while moving around the Milky Way. These stars escape the clusters and are distributed throughout extended envelopes or tidal tails. Howev…
Revisiting a detached stellar structure in the outer northeastern region of the Small Magellanic Cloud
Andrés E. Piatti
The outer northeastern region of the Small Magellanic Cloud (SMC) is populated by a shell-like overdensity whose nature was recently investigated. We analyzed twenty catalogued sta…
Residual velocities of Small Magellanic Cloud star clusters
Andrés E. Piatti
We analyzed the largest Small Magellanic Cloud (SMC) cluster sample (32) with proper motions and radial velocity measurements, from which we obtained their space velocity component…
Globular cluster candidates in the Sagittarius dwarf galaxy
Andrés E. Piatti
Recently, new Sagittarius (Sgr) dwarf galaxy globular clusters were discovered, which opens the question on the actual size of the Sgr globular cluster population, and therefore on…
The surroundings of the Milky Way globular cluster NGC 6809
Andrés E. Piatti
We study the outer regions of the Milky Way globular cluster NGC6809 based on Dark Energy Camera (DECam) observations, which reach nearly 6 mag below the cluster main sequence (MS)…
The kinematics of Small Magellanic Cloud star clusters
Andrés E. Piatti
We report results of proper motions of 25 known Small Magellanic Cloud (SMC) clusters (ages ~ 1 - 10 Gyr old) derived from Gaia EDR3 data sets. When these mean proper motions are g…
Revisiting newly Large Magellanic Cloud age gap star clusters
Andrés E. Piatti
Recently, a noticeable number of new star clusters was identified in the outskirts of the Large Magellanic Cloud (LMC) populating the so-called star cluster age gap, a space of tim…
APOGEE discovery of a chemically atypical star disrupted from NGC 6723 and captured by the Milky Way bulge
José G. Fernández-Trincado, Timothy C. Beers, Dante Minniti +26
The central (`bulge') region of the Milky Way is teeming with a significant fraction of mildly metal-deficient stars with atmospheres that are strongly enriched in cyanogen ($^{12}…
On the structure of Small Magellanic Cloud star clusters
Andrés E. Piatti
It has been recently shown from observational data sets the variation of structural parameters and internal dynamical evolution of star clusters in the Milky Way and in the Large M…
Signatures of tidal disruption in the Milky Way globular cluster NGC 6981 (M72)
A. E. Piatti, M. F. Mestre, J. A. Carballo-Bello +4
We study the outer regions of the Milky Way globular cluster NGC6981 from publicly available photometry and new Dark Energy Camera (DECam) observations, both reaching nearly 4…
Metallicities and ages for 35 star clusters and their surrounding fields in the Small Magellanic Cloud
W. Narloch, G. Pietrzyński, W. Gieren +13
In this work we study 35 stellar clusters in the Small Magellanic Cloud (SMC) in order to provide their mean metallicities and ages. We also provide mean metallicities of the field…
Astrophysical properties of newly discovered Magellanic Cloud star clusters
Andrés E. Piatti
New star cluster candidates projected toward the Large and Small Magellanic Clouds (L/SMC) have been recently discovered from relatively deep imaging surveys. We here conduct a sou…
The search for extratidal star candidates around Galactic globular clusters NGC 2808, NGC 6266, and NGC 6397 with {\textit{Gaia}} DR2 astrometry
Richa Kundu, Camila Navarrete, José G. Fernández-Trincado +5
Context. Extratidal stars are stellar bodies that end up outside the tidal radius of a cluster as a result of internal processes or external forces acting upon it. The presence and…