Zobrazeno 1 - 10
of 226
pro vyhledávání: '"Tognelli, E"'
In this study we compute the equation of state and Rosseland mean opacity from temperatures of T~30000 K down to T~400 K, pushing the capabilities of the AESOPUS code (Marigo et al., 2022; Marigo & Aringer, 2009) into the regime where solid grains ca
Externí odkaz:
http://arxiv.org/abs/2310.14588
Autor:
Prisinzano, L., Damiani, F., Sciortino, S., Flaccomio, E., Guarcello, M. G., Micela, G., Tognelli, E., Jeffries, R. D., Alcalá, J. M.
Publikováno v:
A&A 664, A175 (2022)
With an unprecedented astrometric and photometric data precision, Gaia EDR3 gives us, for the first time, the opportunity to systematically detect and map in the optical bands, the low mass populations of the star forming regions (SFRs) in the Milky
Externí odkaz:
http://arxiv.org/abs/2206.00249
Autor:
Franciosini, E., Tognelli, E., Degl'Innocenti, S., Moroni, P. G. Prada, Randich, S., Sacco, G. G., Magrini, L., Pancino, E., Lanzafame, A. C., Smiljanic, R., Prisinzano, L., Sanna, N., Roccatagliata, V., Bonito, R., de Laverny, P., Albarrán, M. L. Gutiérrez, Montes, D., Jiménez-Esteban, F., Gilmore, G., Bergemann, M., Carraro, G., Damiani, F., Gonneau, A., Hourihane, A., Morbidelli, L., Worley, C. C., Zaggia, S.
Publikováno v:
A&A 659, A85 (2022)
Pre-main sequence models with inflated radii are needed to simultaneously reproduce the colour-magnitude diagram and the lithium depletion pattern in young open clusters. We tested a new set of PMS models including radius inflation due to starspots o
Externí odkaz:
http://arxiv.org/abs/2111.11196
Autor:
Jackson, R. J., Jeffries, R. D., Wright, N. J., Randich, S., Sacco, G., Bragaglia, A., Hourihane, A., Tognelli, E., Degl'Innocenti, S., Moroni, P. G. Prada, Gilmore, G., Bensby, T., Pancino, E., Smiljanic, R., Bergemann, M., Carraro, G., Franciosini, E., Gonneau, A., Jofré, P., Lewis, J., Magrini, L., Morbidelli, L., Prisinzano, L., Worley, C., Zaggia, S., Tautvaišiene, G., Albarrán, M. L. Gutiérrez, Montes, D., Jiménez-Esteban, F.
Spectroscopy from the final internal data release of the Gaia-ESO Survey (GES) has been combined with Gaia EDR3 to assign membership probabilities to targets observed towards 63 Galactic open clusters and 7 globular clusters. The membership probabili
Externí odkaz:
http://arxiv.org/abs/2110.10477
Publikováno v:
A&A 658, A141 (2022)
The finding of multiple stellar populations (MP), defined by patterns in the stellar element abundances, is nowadays considered a distinctive feature of globular clusters. However, while data availability and quality improved in last decades, this is
Externí odkaz:
http://arxiv.org/abs/2110.08269
Autor:
Tognelli, E., Degl'Innocenti, S., Moroni, P. G. Prada, Lamia, L., Pizzone, R. G., Tumino, A., Spitaleri, C., Chiavassa, A.
Publikováno v:
published in Front. Astron. Space Sci., 13 May 2021, 8, 22
Theoretical prediction of surface stellar abundances of light elements -- lithium, beryllium, and boron -- represents one of the most interesting open problems in astrophysics. As well known, several measurements of 7-Li abundances in stellar atmosph
Externí odkaz:
http://arxiv.org/abs/2107.02518
Autor:
Magrini, L., Lagarde, N., Charbonnel, C., Franciosini, E., Randich, S., Smiljanic, R., Casali, G., Vazquez, C. Viscasillas, Spina, L., Biazzo, K., Pasquini, L., Bragaglia, A., Van der Swaelmen, M., Tautvaisiene, G., Inno, L., Sanna, N., Prisinzano, L., Degl'Innocenti, S., Moroni, P. Prada, Roccatagliata, V., Tognelli, E., Monaco, L., de Laverny, P., Delgado-Mena, E., Baratella, M., D'Orazi, V., Vallenari, A., Gonneau, A., Worley, C., Jimenez-Esteban, F., Jofre, P., Bensby, T., Francois, P., Guiglion, G., Bayo, A., Jeffries, R. D., Binks, A. S., Korn, A., Gilmore, G., Damiani, F., Pancino, E., Sacco, G. G., Hourihane, A., Morbidelli, L., Zaggia, S.
Publikováno v:
A&A 651, A84 (2021)
We aim to constrain the mixing processes in low-mass stars by investigating the behaviour of the Li surface abundance after the main sequence. We take advantage of the data from the sixth internal data release of Gaia-ESO, idr6, and from the Gaia Ear
Externí odkaz:
http://arxiv.org/abs/2105.04866
Publikováno v:
A&A 649, A127 (2021)
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Comment: Accepted for publication in A&A. Abstract abridged
Comment: Accepted for publication in A&A. Abstract abridged
Externí odkaz:
http://arxiv.org/abs/2103.08209
We tested the capability of a Bayesian procedure to calibrate both the helium abundance and the mixing length parameter ($\alpha_{ML}$), using precise photometric data for main-sequence (MS) stars in a cluster with negligible reddening and well-deter
Externí odkaz:
http://arxiv.org/abs/2012.08193
Autor:
Bono, G., Braga, V. F., Crestani, J., Fabrizio, M., Sneden, C., Marconi, M., Preston, G. W., Mullen, J. P., Gilligan, C. K., Fiorentino, G., Pietrinferni, A., Altavilla, G., Buonanno, R., Chaboyer, B., da Silva, R., Dall'Ora, M., Degl'Innocenti, S., Di Carlo, E., Ferraro, I., Grebel, E., Iannicola, G., Inno, L., Kovtyukh, V., Kunder, A., Lemasle, B., Marengo, M., Marinoni, S., Marrese, P. M., Martínez-Vázquez, C. E., Matsunaga, N., Monelli, M., Neeley, J., Nonino, M., Moroni, P. G. Prada, Prudil, Z., Stetson, P. B., Thévenin, F., Tognelli, E., Valenti, E., Walker, A. R.
We collected over 6000 high-resolution spectra of four dozen field RR Lyrae (RRL) variables pulsating either in the fundamental (39 RRab) or in the first overtone (9 RRc) mode. We measured radial velocities (RVs) of four strong metallic and four Balm
Externí odkaz:
http://arxiv.org/abs/2005.11566