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Your search keyword '"Lanzoni, B."' showing total 7 results
Start Over Author "Lanzoni, B." Publisher springer science and business media llc
7 results on '"Lanzoni, B."'

1. A new class of fossil fragments from the hierarchical assembly of the Galactic bulge

Author

Ferraro, F. R., primary, Pallanca, C., additional, Lanzoni, B., additional, Crociati, C., additional, Dalessandro, E., additional, Origlia, L., additional, Rich, R. M., additional, Saracino, S., additional, Mucciarelli, A., additional, Valenti, E., additional, Geisler, D., additional, Mauro, F., additional, Villanova, S., additional, Moni Bidin, C., additional, and Beccari, G., additional

Published
2020
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4. Dynamical age differences among coeval star clusters as revealed by blue stragglers

Author

Ferraro, F. R., primary, Lanzoni, B., additional, Dalessandro, E., additional, Beccari, G., additional, Pasquato, M., additional, Miocchi, P., additional, Rood, R. T., additional, Sigurdsson, S., additional, Sills, A., additional, Vesperini, E., additional, Mapelli, M., additional, Contreras, R., additional, Sanna, N., additional, and Mucciarelli, A., additional

Published
2012
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7. A new class of fossil fragments from the hierarchical assembly of the Galactic bulge

Author

Elena Valenti, Alessio Mucciarelli, Francesco R. Ferraro, F. Mauro, Livia Origlia, C. Moni Bidin, Giacomo Beccari, Douglas Geisler, S. Saracino, Emanuele Dalessandro, R. M. Rich, Chiara crociati, S. Villanova, C. Pallanca, Barbara Lanzoni, Ferraro, F. R., Pallanca, C., Lanzoni, B., Crociati, C., Dalessandro, E., Origlia, L., Rich, R. M., Saracino, S., Mucciarelli, A., Valenti, E., Geisler, D., Mauro, F., Villanova, S., Moni Bidin, C., and Beccari, G.

Subjects
Physics, 010504 meteorology & atmospheric sciences, Star formation, Milky Way, FOS: Physical sciences, Astronomy, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Field population, Astrophysics - Astrophysics of Galaxies, 01 natural sciences, Galaxy, Stars, Bulge, Astrophysics of Galaxies (astro-ph.GA), Globular cluster, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, galaxy - bulge - photometry, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, 0105 earth and related environmental sciences
Abstract

The formation and evolutionary processes of galaxy bulges are still unclear, and the presence of young stars in the bulge of the Milky Way is largely debated. We recently demonstrated that Terzan 5, in the Galactic bulge, is a complex stellar system hosting stars with very different ages and a striking chemical similarity to the field population. This indicates that its progenitor was likely one of the giant structures that are thought to generate bulges through coalescence. Here we show that another globular cluster-like system in the bulge (Liller 1) hosts two distinct stellar populations with remarkably different ages: only 1-3 Gyr for the youngest, 12 Gyr for the oldest, which is impressively similar to the old component of Terzan 5. This discovery classifies Liller 1 and Terzan 5 as sites of recent star formation in the Galactic bulge and provides clear observational proof that the hierarchical assembly of primordial massive structures contributed to the formation of the Milky Way spheroid., Comment: 29 pages, 10 figures, typo in author affiliation fixed, published in Nature Astronomy

Published
2020

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