Zobrazeno 1 - 10
of 527
pro vyhledávání: '"Vesperini E"'
Autor:
Calura, F., Pascale, R., Agertz, O., Andersson, E., Lacchin, E., Lupi, A., Meneghetti, M., Nipoti, C., Ragagnin, A., Rosdahl, J., Vanzella, E., Vesperini, E., Zanella, A.
Star clusters stand at the crossroads between galaxies and single stars. Resolving the formation of star clusters in cosmological simulations represents an ambitious and challenging goal, since modelling their internal properties requires very high r
Externí odkaz:
http://arxiv.org/abs/2411.02502
Autor:
Livernois, A. R., Aros, F. I., Vesperini, E., Askar, A., Bellini, A., Giersz, M., Hong, J., Hypki, A., Libralato, M., Ziliotto, T.
We present the results of Monte Carlo simulations aimed at exploring the evolution towards energy equipartition of first- (1G) and second-generation (2G) stars in multiple-population globular clusters and how this evolution is affected by the initial
Externí odkaz:
http://arxiv.org/abs/2410.12968
Autor:
Libralato, M., Gerasimov, R., Bedin, L., Anderson, J., Apai, D., Bellini, A., Burgasser, A. J., Griggio, M., Nardiello, D., Salaris, M., Scalco, M., Vesperini, E.
We present observations of the two closest globular clusters, NGC 6121 and NGC 6397, taken with the NIRISS detector of JWST. The combination of our new JWST data with archival Hubble Space Telescope (HST) images allows us to compute proper motions, d
Externí odkaz:
http://arxiv.org/abs/2409.06774
Autor:
Scalco, M., Salaris, M., Bedin, L., Griggio, M., Bellini, A., Libralato, M., Nardiello, D., Vesperini, E., Anderson, J., Bergeron, P., Burgasser, A., Apai, D.
We present a study of the white dwarf (WD) cooling sequence (CS) in the globular cluster (GC) Omega Centauri, the primary goal of a dedicated Hubble Space Telescope (HST) programme. Our analysis has revealed that the peak at the termination of the WD
Externí odkaz:
http://arxiv.org/abs/2409.04533
Autor:
Dalessandro, E., Cadelano, M., Della Croce, A., Aros, F. I., White, E. B., Vesperini, E., Fanelli, C., Ferraro, F. R., Lanzoni, B., Leanza, S., Origlia, L.
Publikováno v:
A&A 691, A94 (2024)
We present the first 3D kinematic analysis of multiple stellar populations (MPs) in a representative sample of 16 Galactic globular clusters (GCs). For each GC in the sample we studied the MP line-of-sight, plane-of-the-sky and 3D rotation as well as
Externí odkaz:
http://arxiv.org/abs/2409.03827
Autor:
Della Croce, A., Aros, F. I., Vesperini, E., Dalessandro, E., Lanzoni, B., Ferraro, F. R., Bhat, B.
Context. Globular clusters (GCs) are suggested to host many stellar-mass black holes (BHs) at their centers, thus resulting in ideal testbeds for BH formation and retention theories. BHs are expected to play a major role in GC structural and dynamica
Externí odkaz:
http://arxiv.org/abs/2409.01400
Autor:
Scalco, M., Libralato, M., Gerasimov, R., Bedin, L. R., Vesperini, E., Nardiello, D., Bellini, A., Griggio, M., Apai, D., Salaris, M., Burgasser, A., Anderson, J.
Thanks to its exceptional near-infrared photometry, JWST can effectively contribute to the discovery, characterization, and understanding of multiple stellar populations in globular clusters, especially at low masses where the Hubble Space Telescope
Externí odkaz:
http://arxiv.org/abs/2405.01635
Autor:
Scalco, M., Gerasimov, R., Bedin, L. R., Vesperini, E., Nardiello, D., Salaris, M., Burgasser, A., Anderson, J., Libralato, M., Bellini, A., Rosati, P.
We exploit the astro-photometric dataset of the multi-epoch infrared parallel field of a $\textit{Hubble Space Telescope}$ Large Programme aimed at studying the faintest stars of the globular cluster NGC$\,$6752 to determine the luminosity and mass f
Externí odkaz:
http://arxiv.org/abs/2403.03262
Autor:
D'Antona, F., Vesperini, E., Calura, F., Ventura, P., D'Ercole, A., Caloi, V., Marino, A. F., Milone, A. P., Dell'Agli, F., Tailo, M.
We explore the possibility that the N-rich young proto-galaxy GN-z11 recently observed at z=10.6 by the James Webb Space Telescope is the result of the formation of second generation stars from pristine gas and Asymptotic Giant Branch (AGB) ejecta in
Externí odkaz:
http://arxiv.org/abs/2311.14558
Autor:
Pascale, R., Calura, F., Lupi, A., Rosdahl, J., Lacchin, E., Meneghetti, M., Nipoti, C., Vanzella, E., Vesperini, E., Zanella, A.
We use zoom-in, hydrodynamical, cosmological $N$-body simulations tracing the formation of the first stellar clumps from the SImulating the Environments where Globular clusters Emerged (SIEGE) project, to study key structural properties of dark matte
Externí odkaz:
http://arxiv.org/abs/2309.01742