Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Gianpaolo Bertelli"'
Autor:
Gianpaolo, Bertelli, Emma, Nasi
The star formation history in the solar neighbourhood is inferred comparing a sample of field stars from the Hipparcos Catalog with synthetic CMDs. We considered separately the main sequence and the red giant region of the HR diagram. The criteria fo
Externí odkaz:
http://arxiv.org/abs/astro-ph/0011126
Autor:
E. Nasi, Gianpaolo Bertelli
Publikováno v:
The Astronomical Journal. 121:1013-1023
The star formation history in the solar neighborhood is inferred by comparing a sample of field stars from the Hipparcos catalog with synthetic color-magnitude diagrams. We consider separately the main sequence and the red giant region of the H-R dia
Autor:
Claus Leitherer, Danielle Alloin, Uta Fritz-v. Alvensleben, John S. Gallagher, John P. Huchra, Francesca Matteucci, Robert W. O'Connell, John E. Beckman, Gianpaolo Bertelli, Eduardo Bica, Catherine Boisson, Charles Bonatto, Gregory D. Bothun, Alessandro Bressan, Jean P. Brodie, Gustavo Bruzual, David Burstein, Roland Buser, Nelson Caldwell, Emilio Casuso, Miguel Cervino, Stephane Charlot, Miguel Chavez, Cesare Chiosi, Carol A. Christian, Francois Cuisinier, Richard Dallier, Alex de Koter, Sonya Delisle, Angeles I. Diaz, Michael A. Dopita, Ben Dorman, Franco Fagotto, Michael N. Fanelli, Michel Fioc, Maria Luisa Garcia-Vargas, Leo Girardi, Jeffrey D. Goldader, Eduardo Hardy, Timothy M. Heckman, Jorge Iglesias, Pascale Jablonka, Monique Joly, Lewis Jones, Oliver Kurth, Ariane Lancon, Thibault Lejeune, Johannes Loxen, Andre Maeder, Maria Lucia Malagnini, Paola Marigo, J. Miguel Mas-Hesse, Georges Meynet, Claudia S. Moller, Mercedes L. Molla, Carlo Morossi, Emma Nasi, Joy S. Nichols, Knut J. R. Odegaard, Joel Wm. Parker, Miriani G. Pastoriza, Reynier Peletier, Carmelle Robert, Brigitte Rocca-Volmerange, Daniel Schaerer, Alex Schmidt, Henrique R. Schmitt, Robert A. Schommer, Werner Schmutz, Margarida Serote Roos, Laura Silva, Grazyna Stasinska, Ralph S. Sutherland, Rosaria Tantalo, Peeter Traat, Antonella Vallenari, Alexandre Vazdekis, Nolan R. Walborn, Guy Worthey, Chi-Chao Wu
Publikováno v:
Publications of the Astronomical Society of the Pacific. 108(729):996-1017
This paper represents a collective effort to provide an extensive electronic data base useful for the interpretation of the spectra and evolution of galaxies. A broad variety of empirical and theoretical data is discussed here, and the data are made
Publikováno v:
The Astrophysical Journal. 469:L97-L100
In this Letter, we discuss a method to conduct a quantitative study of the star formation history (SFH) of Local Group (LG) galaxies using Hubble Space Telescope (HST) data. This method has proved to be successful in the analysis of the SFH of the sa
Publikováno v:
Astronomy and Astrophysics Supplement Series. 117:113-125
We present a large grid of stellar evolutionary models with the initial chemical composition (Z = 0:0001;Y =0 :23). These tracks are conceived to extend the grid of stellar models described in the previous papers of this series, and are computed with
Publikováno v:
The Evolution of Galaxies ISBN: 9789048158218
We present deep VLT/FORS1 observations of the two distant, isolated Local Group dwarfs Phoenix and Antlia. Our results provide further evidence for the presence of old stars in these star-forming dwarf galaxies. Old stellar populations are known in a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c96dd1fb7c1cb6eb68b7336e2ea9e07d
https://doi.org/10.1007/978-94-017-3313-7_77
https://doi.org/10.1007/978-94-017-3313-7_77
High-quality Hipparcos data for a complete sample of nearly 12000 main-sequence and subgiant stars, together with Padua isochrones, are used to constrain the star-formation history of the solar neigbourhood and the processes that stochastically accel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::58904c8699c4849ee81805fba411988c
We present a large grid of stellar evolutionary tracks, which are suitable to modelling star clusters and galaxies by means of population synthesis. The tracks are presented for the initial chemical compositions [Z=0.0004, Y=0.23], [Z=0.001, Y=0.23],
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::779ec9e6e7e33a7ab47f94fb15247965
http://hdl.handle.net/20.500.11767/12516
http://hdl.handle.net/20.500.11767/12516
Publikováno v:
Astrophysics and Space Science. 169:37-39
We present preliminary results of CCD BV photometry of the old open cluster King 2. The values obtained for the main parameters are:E(B-V)=0.31, (m-M)0=13.78, metal content approximately solar, and age 6×109 yr. From the comparison with synthetic co
Autor:
Gianpaolo Bertelli, Léo Girardi
We discuss how the integrated V-K colours of single stellar populations evolve with age and metallicity. Some of the uncertainties associated to the properties of the underlying stellar models are throughfully discussed. First, we present the effects
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66bd8b5376f239d204f6486959fe707d
http://arxiv.org/abs/astro-ph/9801145
http://arxiv.org/abs/astro-ph/9801145