Zobrazeno 1 - 10
of 1 042
pro vyhledávání: '"Salaris, M"'
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
Publikováno v:
A&A 689, A89 (2024)
The Li-rich stars are a class of rare objects with A(Li) higher than that of other stars in the same evolutionary stage. Their origin is still debated and valuable routes are the Cameron-Fowler mechanism, mass transfer process in a binary system or e
Externí odkaz:
http://arxiv.org/abs/2406.17026
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:
Bedin, L. R., Nardiello, D., Salaris, M., Libralato, M., Bergeron, P., Burgasser, A. J., Apai, D., Griggio, M., Scalco, M., Anderson, J., Gerasimov, R., Bellini, A.
We present James Webb Space Telescope observations of the globular cluster NGC 6397 and use them to extend to infrared wavelengths the characterization of the cluster's entire white dwarf (WD) cooling sequence (CS). The data allows us to probe fundam
Externí odkaz:
http://arxiv.org/abs/2405.01631
Publikováno v:
A&A 689, A243 (2024)
There is plenty of evidence in the literature of significant discrepancies between the observations and models of metal-poor red giant branch stars, in particular regarding the effective temperature, teff, scale. We revisit the benchmark star HD 1225
Externí odkaz:
http://arxiv.org/abs/2404.04010
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
Classical Cepheids (DCEPs) are important astrophysical objects not only as standard candles for the determination of the cosmic distance ladder but also as a test-bed for the stellar evolution theory, thanks to the connection between their pulsation
Externí odkaz:
http://arxiv.org/abs/2402.05762
In the third paper of this series aimed at developing the tools for analysing resolved stellar populations using the cameras on board of the James Webb Space Telescope (JWST), we present a detailed multi-band study of the 2 Gyr Galactic open cluster
Externí odkaz:
http://arxiv.org/abs/2308.10575
We use new observations from the Canada-France-Hawaii Telescope to study the white dwarf cooling sequence of the open cluster M37, a cluster that displays an extended main sequence turn-off and, according to a recent photometric analysis, also a spre
Externí odkaz:
http://arxiv.org/abs/2306.09845