Zobrazeno 1 - 10
of 1 220
pro vyhledávání: '"Cassisi S."'
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:
Gallart, C., Surot, F., Cassisi, S., Fernández-Alvar, E., Mirabal, D., Rivero, A., Ruiz-Lara, T., Santos-Torres, J., Aznar-Menargues, G., Battaglia, G., Queiroz, A. B., Monelli, M., Vasiliev, E., Chiappini, C., Helmi, A., Hill, V., Massari, D., Thomas, G. F.
Publikováno v:
A&A 687, A168 (2024)
The current major challenge to reconstruct the chronology of the Milky Way (MW) is the difficulty to derive precise stellar ages. CMD-fitting offers an alternative to individual age determinations to derive the star formation history (SFH). We presen
Externí odkaz:
http://arxiv.org/abs/2402.09399
Autor:
Recio-Blanco, Alejandra, de Laverny, P., Palicio, P. A., Cassisi, S., Pietrinferni, A., Lagarde, N.
To disentangle the different competing physical processes at play in Galactic evolution, a detailed chrono chemicalkinematical, and dynamical characterisation of the disc bimodality is necessary, including high number statistics. Here we make use of
Externí odkaz:
http://arxiv.org/abs/2402.01522
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
Our recent multi-band photometric study of the colour width of the lower main sequence of the open cluster M37 has revealed the presence of a sizeable initial chemical composition spread in the cluster. If initial chemical composition spreads are com
Externí odkaz:
http://arxiv.org/abs/2306.05737
Autor:
Libralato, M., Vesperini, E., Bellini, A., Milone, A. P., van der Marel, R. P., Piotto, G., Anderson, J., Aparicio, A., Barbuy, B., Bedin, L. R., Brown, T. M., Cassisi, S., Nardiello, D., Sarajedini, A., Scalco, M.
Our understanding of the kinematic properties of multiple stellar populations (mPOPs) in Galactic globular clusters (GCs) is still limited compared to what we know about their chemical and photometric characteristics. Such limitation arises from the
Externí odkaz:
http://arxiv.org/abs/2301.04148
Autor:
Covino, S., Cristiani, S., Alcala', J. M., Alencar, S. H. P., Balashev, S. A., Barbuy, B., Bastian, N., Battino, U., Bissell, L., Bristow, P., Calcines, A., Calderone, G., Cambianica, P., Carini, R., Carter, B., Cassisi, S., Castilho, B. V., Cescutti, G., Christlieb, N., Cirami, R., Conzelmann, R., Coretti, I., Cooke, R., Cremonese, G., Cunha, K., Cupani, G., da Silva, A. R., D'Auria, D., De Caprio, V., De Cia, A., Dekker, H., D'Elia, V., De Silva, G., Diaz, M., Di Marcantonio, P., D'Odorico, V., Ernandes, H., Evans, C., Fitzsimmons, A., Franchini, M., Gaensicke, B., Genoni, M., Giribaldi, R. E., Gneiding, C., Grazian, A., Hansen, C. J., Hopgood, J., Kosmalski, J., La Forgia, F., La Penna, P., Landoni, M., Lazzarin, M., Lunney, D., Maciel, W., Marcolino, W., Marconi, M., Migliorini, A., Miller, C., Modigliani, A., Noterdaeme, P., Oggioni, L., Opitom, C., Pariani, G., Pilecki, B., Piranomonte, S., Quirrenbach, A., Redaelli, E. M. A., Pereira, C. B., Randich, S., Rossi, S., Sanchez-Janssen, R., Schoeller, M., Seifert, W., Smiljanic, R., Snodgrass, C., Squalli, O., Stilz, I., Stuermer, J., Trost, A., Vanzella, E., Ventura, P., Verducci, O., Waring, C., Watson, S., Wells, M., Wright, D., Zafar, T., Zanutta, A., Zins, G.
In spite of the advent of extremely large telescopes in the UV/optical/NIR range, the current generation of 8-10m facilities is likely to remain competitive at ground-UV wavelengths for the foreseeable future. The Cassegrain U-Band Efficient Spectrog
Externí odkaz:
http://arxiv.org/abs/2212.12791
Autor:
Lardo, C., Salaris, M., Cassisi, S., Bastian, N., Mucciarelli, A., Cabrera-Ziri, I., Dalessandro, E.
Publikováno v:
A&A 669, A19 (2023)
Photometric investigations have revealed that Galactic globular clusters exhibit internal metallicity variations amongst the so-called first-population stars, until now considered to have a homogeneous initial chemical composition. This is not fully
Externí odkaz:
http://arxiv.org/abs/2210.13369
Autor:
Nardiello, D., Bedin, L. R., Burgasser, A., Salaris, M., Cassisi, S., Griggio, M., Scalco, M.
As the James Webb Space Telescope (JWST) has become fully operational, early-release data are now available to begin building the tools and calibrations for precision point-source photometry and astrometry in crowded cluster environments. Here, we pr
Externí odkaz:
http://arxiv.org/abs/2209.06547