Zobrazeno 1 - 10
of 204
pro vyhledávání: '"Legnardi, M."'
Autor:
Muratore, F., Milone, A. P., D'Antona, F., Nastasio, E. J., Cordoni, G., Legnardi, M. V., He, C., Ziliotto, T., Dondoglio, E., Bernizzoni, M., Tailo, M., Bortolan, E., Dell'Agli, F., Deng, L., Lagioia, E. P., Li, C., Marino, A. F., Ventura, P.
Nearly all star clusters younger than ~600 Myr exhibit extended main sequence turn offs and split main sequences (MSs) in their color-magnitude diagrams. Works based on both photometry and spectroscopy have firmly demonstrated that the red MS is comp
Externí odkaz:
http://arxiv.org/abs/2411.02508
Autor:
Lagioia, E. P., Milone, A. P., Legnardi, M. V., Cordoni, G., Dondoglio, E., Renzini, A., Tailo, M., Ziliotto, T., Carlos, M., Jang, S., Marino, A. F., Mohandasan, A., Qi, J., Rangwal, G., Bortolan, E., Muratore, F.
The pseudo two-color diagram, known as chromosome map (ChM), is a valuable tool for identifying globular clusters (GCs) that consist of single or multiple stellar populations (MPs). Recent surveys of Galactic GCs using the ChM have provided stringent
Externí odkaz:
http://arxiv.org/abs/2406.16824
Autor:
Marino, A. F., Milone, A. P., Renzini, A., Dondoglio, E., Bortolan, E., Carlos, M. G., Cordoni, G., Dotter, A., Jang, S., Lagioia, E. P., Legnardi, M. V., Muratore, F., Mohandasan, A., Tailo, M., Ziliotto, T.
We present the first spectroscopic estimates of the chemical abundance of M dwarf stars in a globular cluster (GC), namely 47 Tucanae. By exploiting NIRSpec on board the James Webb Space Telescope (JWST) we gathered low-resolution spectra for 28 star
Externí odkaz:
http://arxiv.org/abs/2406.12684
Autor:
Mehta, V. J., Milone, A. P., Casagrande, L., Marino, A. F., Legnardi, M. V., Cordoni, G., Dondoglio, E., Jang, S., Ziliotto, T., Barbieri, M., Bernizzoni, M., Bortolan, E., Sanchez, A. Bouras Moreno, Lagioia, E. P., Lionetto, S., Mohandasan, A., Muratore, F.
Understanding the formation of multiple populations in globular clusters (GCs) represents a challenge for stellar population studies. Nevertheless, the outermost cluster regions, likely to hold clues about the initial configuration of GC stars, remai
Externí odkaz:
http://arxiv.org/abs/2406.02755
Autor:
Legnardi, M. V., Milone, A. P., Cordoni, G., Marino, A. F., Dondoglio, E., Jang, S., Lagioia, E. P., Muratore, F., Ziliotto, T., Bortolan, E., Mohandasan, A.
Publikováno v:
A&A 687, A160 (2024)
Globular cluster (GC) stars composed of pristine material (first-generation, 1G, stars) are not chemically homogeneous, as they exhibit extended sequences in the "Chromosome Map" (ChM). Recent studies characterized 1G stars within the center of 55 Ga
Externí odkaz:
http://arxiv.org/abs/2405.02006
Autor:
Marino, A. F., Milone, A. P., Legnardi, M. V., Renzini, A., Dondoglio, E., Cavecchi, Y., Cordoni, G., Dotter, A., Lagioia, E. P., Ziliotto, T., Bernizzoni, M., Bortolan, E., Carlos, M. G., Jang, S., Mohandasan, A., Muratore, F., Tailo, M.
The James Webb Space Telescope (JWST) observations have been demonstrated to be efficient in detecting globular clusters' (GCs) multiple stellar populations in the low mass regime of M dwarfs. We present an overview, and first results, of different p
Externí odkaz:
http://arxiv.org/abs/2401.06681
Autor:
Marino, A. F., Milone, A. P., Dondoglio, E., Renzini, A., Cordoni, G., Jerjen, H., Karakas, A. I., Lagioia, E. P., Legnardi, M. V., McKenzie, M., Mohandasan, A., Tailo, M., Yong, D., Ziliotto, T.
The "chromosome maps" (ChMs) of globular clusters (GCs) have revealed that these ancient structures are not homogeneous in metallicity in various ways, and in different natures. The Type II GCs generally display larger variations, sometimes coupled w
Externí odkaz:
http://arxiv.org/abs/2311.01871
Autor:
Dondoglio, E., Milone, A. P., Marino, A. F., D'Antona, F., Cordoni, G., Legnardi, M. V., Lagioia, E. P., Jang, S., Ziliotto, T., Carlos, M., Dell'Agli, F., Karakas, A., Mohandasan, A., Osborn, Z., Tailo, M., Ventura, P.
About one-fifth of the Galactic globular clusters (GCs), dubbed Type II GCs, host distinct stellar populations with different heavy elements abundances. NGC 1851 is one of the most studied Type II GCs, surrounded by several controversies regarding th
Externí odkaz:
http://arxiv.org/abs/2309.16423
Autor:
Milone, A. P., Cordoni, G., Marino, A. F., Muratore, F., D'Antona, F., Di Criscienzo, M., Dondoglio, E., Lagioia, E. P., Legnardi, M. V., Mohandasan, A., Ziliotto, T., Dell'Agli, F., Tailo, M., Ventura, P.
Young and intermediate-age star clusters of both Magellanic Clouds exhibit complex color-magnitude diagrams. In addition to the extended main-sequence turn-offs (eMSTOs), commonly observed in star clusters younger than ~2 Gyr, the clusters younger th
Externí odkaz:
http://arxiv.org/abs/2307.10020
Autor:
Legnardi, M. V., Milone, A. P., Cordoni, G., Lagioia, E. P., Dondoglio, E., Marino, A. F., Jang, S., Mohandasan, A., Ziliotto, T.
The presence of differential reddening in the direction of Galactic globular clusters (GCs) has proven to be a serious limitation in the traditional colour-magnitude diagram (CMD) analysis. Here, we estimate local reddening variations in the directio
Externí odkaz:
http://arxiv.org/abs/2304.05076