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Your search keyword '"Le Brun V."' showing total 3 results
Start Over Author "Le Brun V." Publisher nature publishing group
3 results on '"Le Brun V."'

1. A test of the nature of cosmic acceleration using galaxy redshift distortions

Author

Guzzo, L., Pierleoni, M., Meneux, B., Branchini, E., Le Fevre, O., Marinoni, C., Garilli, B., Blaizot, J., De Lucia, G., Pollo, A., McCracken, H. J., Bottini, D., Le Brun, V., Maccagni, D., Picat, J. P., Scaramella, R., Scodeggio, M., Tresse, L., Vettolani, G., Zanichelli, A., Adami, C., Arnouts, S., Bardelli, S., Bolzonella, M., Bongiorno, A., Cappi, A., Charlot, S., Ciliegi, P., Contini, T., Cucciati, O., de la Torre, S., Dolag, K., Foucaud, S., Franzetti, P., Gavignaud, I., Ilbert, O., Iovino, A., Lamareille, F., Marano, B., Mazure, A., Memeo, P., Merighi, R., Moscardini, L., Paltani, S., Pello, R., Perez-Montero, E., Pozzetti, L., Radovich, M., Vergani, D., Zamorani, G., and Zucca, E.

Subjects
Red shift -- Research -- Observations, Expanding universe -- Observations -- Research, Environmental issues, Science and technology, Zoology and wildlife conservation, Observations, Research
Abstract

Author(s): L. Guzzo (corresponding author) [1, 2, 3, 4]; M. Pierleoni [3]; B. Meneux [5]; E. Branchini [6]; O. Le Fèvre [7]; C. Marinoni [8]; B. Garilli [5]; J. Blaizot [...]

Published
2008
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2. A large population of galaxies 9 to 12 billion years back in the history of the Universe

Author

Le Fevre, O., Paltani, S., Arnouts, S., Charlot, S., Foucaud, S., Ilbert, O., McCracken, H. J., Zamorani, G., Bottini, D., Garilli, B., Le Brun, V., Maccagni, D., Picat, J. P., Scaramella, R., Scodeggio, M., Tresse, L., Vettolani, G., Zanichelli, A., Adami, C., Bardelli, S., Bolzonella, M., Cappi, A., Ciliegi, P., Contini, T., Franzetti, P., Gavignaud, I., Guzzo, L., Iovino, A., Marano, B., Marinoni, C., Mazure, A., Meneux, B., Merighi, R., Pello, R., Pollo, A., Pozzetti, L., Radovich, M., Zucca, E., Arnaboldi, M., Bondi, M., Bongiorno, A., Busarello, G., Gregorini, L., Lamareille, F., Mathez, G., Mellier, Y., Merluzzi, P., Ripepi, V., and Rizzo, D.

Subjects
Environmental issues, Science and technology, Zoology and wildlife conservation
Abstract

Author(s): O. Le Fèvre (corresponding author) [1]; S. Paltani [1]; S. Arnouts [1]; S. Charlot [2, 3]; S. Foucaud [4]; O. Ilbert [1, 5]; H. J. McCracken [3, 12]; G. [...]

Published
2005
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3. Analogues of primeval galaxies two billion years after the Big Bang

Author

Amorín, R, Fontana, A, Pérez-Montero, E, Castellano, M, Guaita, L, Grazian, A, Fèvre, OL, Ribeiro, B, Schaerer, D, Tasca, LAM, Thomas, R, Bardelli, S, Cassarà, L, Cassata, P, Cimatti, A, Contini, T, Barros, SD, Garilli, B, Giavalisco, M, Hathi, N, Koekemoer, A, Le Brun, V, Lemaux, BC, Maccagni, D, Pentericci, L, Pforr, J, Talia, M, Tresse, L, Vanzella, E, Vergani, D, Zamorani, G, Zucca, E, and Merlin, E

Subjects
galaxies and clusters, 13. Climate action, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, cosmology, Astrophysics::Galaxy Astrophysics
Abstract

Deep observations are revealing a growing number of young galaxies in the first billion years of cosmic time. Compared to typical galaxies at later times, they show more extreme emission-line properties, higher star formation rates, lower masses, and smaller sizes. However, their faintness precludes studies of their chemical abundances and ionization conditions, strongly limiting our understanding of the physics driving early galaxy build-up and metal enrichment. Here we study a rare population of ultraviolet-selected, low-luminosity galaxies at redshift 2.4 < z < 3.5 that exhibit all the rest-frame properties expected from primeval galaxies. These low-mass, highly compact systems are rapidly forming galaxies able to double their stellar mass in only a few tens of millions of years. They are characterized by very blue ultraviolet spectra with weak absorption features and bright nebular emission lines, which imply hard radiation fields from young hot massive stars. Their highly ionized gas phase has strongly sub-solar carbon and oxygen abundances, with metallicities more than a factor of two lower than that found in typical galaxies of similar mass and star formation rate at z≤2.5. These young galaxies reveal an early and short stage in the assembly of their galactic structures and their chemical evolution, a vigorous phase that is likely to be dominated by the effects of gas-rich mergers, accretion of metal-poor gas and strong outflows.

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