Zobrazeno 1 - 10
of 903
pro vyhledávání: '"Carretta E."'
Context. Globular clusters are considered key objects for understanding the formation and evolution of the Milky Way. In this sense, their characterisation in terms of their chemical and orbital parameters can provide constraints to the chemical evol
Externí odkaz:
http://arxiv.org/abs/2402.06490
Autor:
Alonso-Santiago, J., Frasca, A., Catanzaro, G., Bragaglia, A., Magrini, L., Vallenari, A., Carretta, E., Lucatello, S.
M 39 is a nearby young open cluster hardly studied in the last decades. No giant is known among its members and its chemical composition has never been studied. In order to investigate it we performed high-resolution spectroscopy of 20 expected clust
Externí odkaz:
http://arxiv.org/abs/2312.08581
Autor:
Zhang, R., Lucatello, S., Bragaglia, A., Alonso-Santiago, J., Andreuzzi, G., Casali, G., Carrera, R., Carretta, E., Orazi, V. D, Frasca, A., Fu, X., Magrini, L., Minchev, I., Origlia, L., Spina, L., Vallenari, A.
Publikováno v:
A&A 667, A103 (2022)
Exploring the Galactic chemical evolution and enrichment scenarios with open clusters allows us to understand the history of the Milky Way disk. High-resolution spectra of OCs are a crucial tool, as they provide precise chemical information, to combi
Externí odkaz:
http://arxiv.org/abs/2209.01738
Autor:
Carrera, R., Casamiquela, L., Bragaglia, A., Carretta, E., Carbajo-Hijarrubia, J., Jordi, C., Alonso-Santiago, J., Balaguer-Nuñez, L., Baratella, M., D'Orazi, V., Lucatello, S., Soubiran, C.
Context: Open clusters are ideal laboratories to investigate a variety of astrophysical topics, from the properties of the Galactic disc to stellar evolution models. For this purpose, we need to know their chemical composition in detail. Unfortunatel
Externí odkaz:
http://arxiv.org/abs/2204.03765
Autor:
Sollima, A., D'Orazi, V., Gratton, R., Carini, R., Carretta, E., Bragaglia, A., Lucatello, S.
Publikováno v:
A&A 661, A69 (2022)
NGC1850 is the nearest Young Massive Cluster of the Local Group with a mass similar to those of Galactic globular clusters. Recent studies have revealed an extended morphology of its MSTO, which can be interpreted as a spread in either age or interna
Externí odkaz:
http://arxiv.org/abs/2203.00025
We present the result of a survey of Monte Carlo simulations of globular clusters hosting two generations of stars including a large (f_b=50%) fraction of primordial binaries in both populations. The dynamical evolution of the two stellar populations
Externí odkaz:
http://arxiv.org/abs/2202.12321
Autor:
Alonso-Santiago, J., Frasca, A., Catanzaro, G., Bragaglia, A., Andreuzzi, G., Carrera, R., Carretta, E., Casali, G., D'Orazi, V., Fu, X., Giarrusso, M., Lucatello, S., Magrini, L., Origlia, L., Spina, L., Vallenari, A., Zhang, R.
Publikováno v:
A&A 656, A149 (2021)
Stock 2 is a little-studied open cluster that shows an extended main-sequence turnoff (eMSTO). In order to investigate this phenomenon and characterise the cluster itself we performed high-resolution spectroscopy in the framework of the Stellar Popul
Externí odkaz:
http://arxiv.org/abs/2109.13959
Autor:
Zhang, R., Lucatello, S., Bragaglia, A., Carrera, R., Spina, L., Alonso-Santiago, J., Andreuzzi, G., Casali, G., Carretta, E., Frasca4, A., Fu, X., Magrini, L., Origlia, L., DOrazi, V., Vallenari, A.
Thanks to modern understanding of stellar evolution, we can accurately measure the age of Open Clusters (OCs). Given their position, they are ideal tracers of the Galactic disc. Gaia data release 2, besides providing precise parallaxes, led to the de
Externí odkaz:
http://arxiv.org/abs/2106.08014
Autor:
Casali, G., Magrini, L., Frasca, A., Bragaglia, A., Catanzaro, G., D'Orazi, V., Sordo, R., Carretta, E., Origlia, L., Andreuzzi, G., Fu, X., Vallenari, A.
Publikováno v:
A&A 643, A12 (2020)
In the framework of the Stellar Population Astrophysics (SPA) project, we present new observations and spectral analysis of four sparsely studied open clusters, namely Collinder 350, Gulliver 51, NGC 7044, and Ruprecht 171. We exploit the HARPS-N spe
Externí odkaz:
http://arxiv.org/abs/2009.06695
Autor:
Frasca, A., Alonso-Santiago, J., Catanzaro, G., Bragaglia, A., Carretta, E., Casali, G., D'Orazi, V., Magrini, L., Andreuzzi, G., Oliva, E., Origlia, L., Sordo, R., Vallenari, A.
Publikováno v:
A&A 632, A16 (2019)
Star clusters are key to understand the stellar and Galactic evolution. ASCC 123 is a little-studied, nearby and very sparse open cluster. We performed the first high-resolution spectroscopic study of this cluster in the framework of the SPA (Stellar
Externí odkaz:
http://arxiv.org/abs/1910.02006