82 citations · 822 across the 53 of their papers we have counts for
21 papers · 1 filter
The role of mass transfer efficiency in stability criteria: Implementation in SEVN and a test on blue stragglers and binary compact objects
M. Echeveste, G. J. Escobar, G. Iorio +12
Context: The stability of mass transfer through Roche-lobe overflow plays a key role in shaping the outcome of binary interactions. However, the criterion for mass transfer stabili…
Stellar rotation and binaries in open clusters with Gaia DR3
Elena Pancino, Elisabetta Reggiani, Silvia Marinoni +14
Stellar rotation is a fundamental ingredient in shaping the evolution of stars and it can also be used to trace past stellar interactions. Yet, systematic studies of stellar rotati…
Testing the Role of Merging Binaries in the Formation of the Split Main Sequence in Young Clusters
Nate Bastian, Sebastian Kamann, Florian Niederhofer +1
A number of theories have been put forward to explain the bi-modal stellar rotational distribution observed in young massive clusters. These include stellar mergers and interaction…
Tracing stellar rotation in young massive LMC clusters
Sebastian Kamann, Nate Bastian, Florian Niederhofer +8
We present a detailed analysis of stellar rotation along the main sequences of NGC 1866 and NGC 1856, two young (~200-300 Myr) massive clusters in the Large Magellanic Cloud, using…
Survey of Surveys. II. Stellar parameters for 23 millions of stars
A. Turchi, E. Pancino, A. Avdeeva +16
In the current panorama of large surveys, the vast amount of data obtained with different methods, data types, formats, and stellar samples, is making an efficient use of the avail…
Binary properties of the globular cluster 47 Tuc (NGC 104). A dearth of short-period binaries
Johanna Müller-Horn, Fabian Göttgens, Stefan Dreizler +4
Spectroscopic observations of binary stars in globular clusters are essential to shed light on the poorly constrained period, eccentricity, and mass ratio distributions and to deve…
Stellar Black Holes and Compact Stellar Remnants
Guglielmo Costa, Martyna Chruślińska, Jakub Klencki +4
The recent observations of gravitational waves (GWs) by the LIGO-Virgo-KAGRA collaboration (LVK) have provided a new opportunity for studying our Universe. By detecting several mer…
A closer look at the binary content of NGC 1850
S. Saracino, S. Kamann, N. Bastian +7
Studies of young clusters have shown that a large fraction of O-/early B-type stars are in binary systems, where the binary fraction increases with mass. These massive stars are pr…
On the origin of UV-dim stars: a population of rapidly rotating shell stars?
Silvia Martocchia, Nate Bastian, Sara Saracino +1
The importance of stellar rotation in setting the observed properties of young star clusters has become clearer over the past decade, with rotation being identified as the main cau…
The effects of stellar rotation along the main sequence of the 100 Myr old massive cluster NGC 1850
Sebastian Kamann, Sara Saracino, Nate Bastian +13
Young star clusters enable us to study the effects of stellar rotation on an ensemble of stars of the same age and across a wide range in stellar mass and are therefore ideal targe…
Discovery of a double sequence of blue straggler stars in the core-collapsed globular cluster NGC 6256
Mario Cadelano, Francesco R. Ferraro, Emanuele Dalessandro +3
We used a combination of high-resolution optical images acquired with the Hubble Space Telescope and near-IR wide-field data to investigate the stellar density profile and the popu…
Exploring the role of binarity in the origin of the bimodal rotational velocity distribution in stellar clusters
S. Kamann, N. Bastian, C. Usher +2
Many young and intermediate age massive stellar clusters host bimodal distributions in the rotation rates of their stellar populations, with a dominant peak of rapidly rotating sta…
Leveraging HST with MUSE: II. Na-abundance variations in intermediate age star clusters
S. Martocchia, S. Kamann, S. Saracino +13
Ancient (10 Gyr) globular clusters (GCs) show chemical abundance variations in the form of patterns among certain elements, e.g. N correlates with Na and anti-correlates with O.…
Leveraging HST with MUSE: I. Sodium abundance variations within the 2 Gyr-old cluster NGC 1978
S. Saracino, S. Kamann, C. Usher +10
Nearly all of the well studied ancient globular clusters (GCs), in the Milky Way and in nearby galaxies, show star-to-star variations in specific elements (e.g., He, C, N, O, Na, A…
Chromosome maps of young LMC clusters: An additional case of coeval multiple populations
S. Saracino, S. Martocchia, N. Bastian +9
Recent studies have revealed that the Multiple Populations (MPs) phenomenon does not occur only in ancient and massive Galactic globular clusters (GCs), but it is also observed in…
An Extragalactic Chromosome Map: The intermediate age SMC Cluster Lindsay 1
S. Saracino, N. Bastian, V. Kozhurina-Platais +8
The discovery of star-to-star abundance variations (a.k.a. multiple populations - MPs) within globular clusters (GCs), which are generally not found in the field or in lower mass o…
High-resolution extinction map in the direction of the bulge globular cluster NGC 6440
Cristina Pallanca, Francesco R. Ferraro, Barbara Lanzoni +3
We used optical images acquired with the UVIS channel of the Wide Field Camera 3 on board of the Hubble Space Telescope to construct the first high-resolution extinction map in the…
IC4499 revised: spectro-photometric evidence of small light-element variations
E. Dalessandro, C. Lardo, M. Cadelano +6
It has been suggested that IC4499 is one of the very few old globulars to not host multiple populations with light-element variations. To follow-up on this very interesting result,…
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…
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…
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,…