Zobrazeno 1 - 10
of 1 058
pro vyhledávání: '"Straniero, O"'
First direct measurement of the 64.5 keV resonance strength in $^{17}$O(p,$\gamma$)$^{18}$F reaction
Autor:
Gesuè, R. M., Ciani, G. F., Piatti, D., Boeltzig, A., Rapagnani, D., Aliotta, M., Ananna, C., Barbieri, L., Barile, F., Bemmerer, D., Best, A., Broggini, C., Bruno, C. G., Caciolli, A., Campostrini, M., Casaburo, F., Cavanna, F., Colombetti, P., Compagnucci, A., Corvisiero, P., Csedreki, L., Davinson, T., De Gregorio, G. M., Dell'Aquila, D., Depalo, R., Di Leva, A., Elekes, Z., Ferraro, F., Formicola, A., Fülöp, Zs., Gervino, G., Guglielmetti, A., Gustavino, C., Gyürky, Gy., Imbriani, G., Junker, M., Lugaro, M., Marigo, P., Marsh, J., Masha, E., Menegazzo, R., Mercogliano, D., Paticchio, V., Perrino, R., Prati, P., Rigato, V., Robb, D., Schiavulli, L., Sidhu, R. S., Skowronski, J., Straniero, O., Szücs, T., Zavatarelli, S.
The CNO cycle is one of the most important nuclear energy sources in stars. At temperatures of hydrostatic H-burning (20 MK $<$ T $<$ 80 MK) the $^{17}$O(p,$\gamma$)$^{18}$F reaction rate is dominated by the poorly constrained 64.5~keV resonance. Her
Externí odkaz:
http://arxiv.org/abs/2408.03015
Autor:
Hinkle, K. H., Fekel, F. C., Straniero, O., Maas, Z. G., Joyce, R. R., Lebzelter, T., Muterspaugh, M. W., Sowell, J. R.
A single-lined spectroscopic orbit for the M giant in the X-ray binary IGR J16194-2810 is determined from a time-series of optical spectra. The spectroscopic orbital period of 192.5 days is twice that of the photometric period, confirming that the M
Externí odkaz:
http://arxiv.org/abs/2405.02270
Autor:
Masha, E., Barbieri, L., Skowronski, J., Aliotta, M., Ananna, C., Barile, F., Bemmerer, D., Best, A., Boeltzig, A., Broggini, C., Bruno, C. G., Caciolli, A., Campostrini, M., Casaburo, F., Cavanna, F., Ciani, G. F., Ciapponi, A., Colombetti, P., Compagnucci, A., Corvisiero, P., Csedreki, L., Davinson, T., Depalo, R., Di Leva, A., Elekes, Z., Ferraro, F., Fiore, E. M., Formicola, A., Fülöp, Zs., Gervino, G., Guglielmetti, A., Gustavino, C., Gyürky, Gy., Imbriani, G., José, J., Junker, M., Lugaro, M., Manoj, P., Marigo, P., Menegazzo, R., Paticchio, V., Piatti, D., Prati, P., Rapagnani, D., Rigato, V., Robb, D., Schiavulli, L., Sidhu, R. S., Straniero, O., Szücs, T., Zavatarelli, S.
The $\mathrm{^{20}Ne(p, \gamma)^{21}Na}$ reaction is the slowest in the NeNa cycle and directly affects the abundances of the Ne and Na isotopes in a variety of astrophysical sites. Here we report the measurement of its direct capture contribution, f
Externí odkaz:
http://arxiv.org/abs/2311.04089
Autor:
Ripepi, V., Catanzaro, G., Trentin, E., Straniero, O., Mucciarelli, A., Marconi, M., Bhardwaj, A., Fiorentino, G., Monelli, M., Storm, J., De Somma, G., Leccia, S., Molinaro, R., Musella, I., Sicignano, T.
Anomalous Cepheids (ACEPs) are intermediate mass metal-poor pulsators mostly discovered in dwarf galaxies of the Local Group. However, recent Galactic surveys, including the Gaia DR3, found a few hundreds of ACEPs in the Milky Way. Their origin is no
Externí odkaz:
http://arxiv.org/abs/2310.20503
Autor:
Skowronski, J., Boeltzig, A., Ciani, G. F., Csedreki, L., Piatti, D., Aliotta, M., Ananna, C., Barile, F., Bemmerer, D., Best, A., Broggini, C., Bruno, C. G., Caciolli, A., Campostrini, M., Cavanna, F., Colombetti, P., Compagnucci, A., Corvisiero, P., Davinson, T., Depalo, R., Di Leva, A., Elekes, Z., Ferraro, F., Formicola, A., Fülöp, Zs., Gervino, G., Gesuè, R. M., Guglielmetti, A., Gustavino, C., Gyürky, Gy., Imbriani, G., Junker, M., Lugaro, M., Marigo, P., Masha, E., Menegazzo, R., Paticchio, V., Perrino, R., Prati, P., Rapagnani, D., Rigato, V., Schiavulli, L., Sidhu, R. S., Straniero, O., Szücs, T., Zavatarelli, S.
Publikováno v:
Phys. Rev. Lett. 131, 162701 (2023)
The ${}^{12}\mathrm{C}/{}^{13}\mathrm{C}$ ratio is a significant indicator of nucleosynthesis and mixing processes during hydrogen burning in stars. Its value mainly depends on the relative rates of the ${}^{12}\mathrm{C}(p,\gamma){}^{13}\mathrm{N}$
Externí odkaz:
http://arxiv.org/abs/2308.16098
Autor:
Piatti, D., Masha, E., Aliotta, M., Balibrea-Correa, J., Barile, F., Bemmerer, D., Best, A., Boeltzig, A., Broggini, C., Bruno, C. G., Caciolli, A., Cavanna, F., Chillery, T., Ciani, G. F., Compagnucci, A., Corvisiero, P., Csedreki, L., Davinson, T., Depalo, R., di Leva, A., Elekes, Z., Ferraro, F., Fiore, E. M., Formicola, A., Fülöp, Zs., Gervino, G., Guglielmetti, A., Gustavino, C., Gyürky, Gy., Imbriani, G., Junker, M., Lugaro, M., Marigo, P., Menegazzo, R., Mossa, V., Pantaleo, F. R., Paticchio, V., Perrino, R., Prati, P., Rapagnani, D., Schiavulli, L., Skowronski, J., Stöckel, K., Straniero, O., Szücs, T., Takács, M. P., Zavatarelli, S.
Publikováno v:
Eur. Phys. J. A 58, 194 (2022)
In stars, the fusion of $^{22}$Ne and $^4$He may produce either $^{25}$Mg, with the emission of a neutron, or $^{26}$Mg and a $\gamma$ ray. At high temperature, the ($\alpha,n$) channel dominates, while at low temperature, it is energetically hampere
Externí odkaz:
http://arxiv.org/abs/2209.03051
Autor:
Ciani, G. F., Csedreki, L., Rapagnani, D., Aliotta, M., Balibrea-Correa, J., Barile, F., Bemmerer, D., Best, A., Boeltzig, A., Broggini, C., Bruno, C. G., Caciolli, A., Cavanna, F., Chillery, T., Corvisiero, P., Cristallo, S., Davinson, T., Depalo, R., DiLeva, A., Elekes, Z., Ferraro, F., Fiore, E., Formicola, A., Fulop, Zs., Gervino, G., Guglielmetti, A., Gustavino, C., Gyurky, Gy., Imbriani, G., Junker, M., Lugaro, M., Marigo, P., Masha, E., Menegazzo, R., Mossa, V., Pantaleo, F. R., Paticchio, V., Perrino, R., Piatti, D., Prati, P., Schiavulli, L., Stockel, K., Straniero, O., Szucs, T., Takacs, M. P., Terrasi, F., Vescovi, D., Zavatarelli, S .
One of the main neutron sources for the astrophysical s-process is the reaction 13C({\alpha},n)16O, taking place in thermally pulsing Asymptotic Giant Branch stars at temperatures around 90 MK. To model the nucleosynthesis during this process the rea
Externí odkaz:
http://arxiv.org/abs/2110.00303
Autor:
Aliotta, M., Buompane, R., Couder, M., Couture, A., deBoer, R. J., Formicola, A., Gialanella, L., Glorius, J., Imbriani, G., Junker, M., Langer, C., Lennarz, A., Litvinov, Yu. A., Liu, W. -P., Lugaro, M., Matei, C., Meisel, Z., Piersanti, L., Reifarth, R., Robertson, D., Simon, A., Straniero, O., Tumino, A., Wiescher, M., Xu, Y.
The study of stellar burning began just over 100 years ago. Nonetheless, we do not yet have a detailed picture of the nucleosynthesis within stars and how nucleosynthesis impacts stellar structure and the remnants of stellar evolution. Achieving this
Externí odkaz:
http://arxiv.org/abs/2109.14418
Autor:
Straniero, O., Pallanca, C., Dalessandro, E., Dominguez, I., Ferraro, F. R., Giannotti, M., Mirizzi, A., Piersanti, L.
Publikováno v:
A&A 644, A166 (2020)
By combining Hubble Space Telescope (HST) and ground based optical and near-infrared photometric samples, we derive the RGB tip absolute magnitude of 22 galactic globular clusters (GGCs). The effects of varying the distance and the metallicity scales
Externí odkaz:
http://arxiv.org/abs/2010.03833
Autor:
Hinkle, K. H., Lebzelter, T., Fekel, F. C., Straniero, O., Joyce, R. R., Prato, L., Karnath, N., Habel, N.
The X-ray binary 4U 1954+31 has been classified as a Low Mass X-ray Binary (LMXB) containing a M giant and a neutron star (NS). It has also been included in the rare class of X-ray symbiotic binaries (SyXB). The Gaia parallax, infrared colors, spectr
Externí odkaz:
http://arxiv.org/abs/2010.01081