Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Friaca, A. C. S."'
Three-dimensional hydrodynamic simulations are commonly used to study the evolution of the gaseous content in isolated galaxies, besides its connection with galactic star formation histories. Stellar winds, supernova blasts, and black hole feedback a
Externí odkaz:
http://arxiv.org/abs/2302.04825
Autor:
Souza, Stefano O., Ernandes, Heitor, Valentini, Marica, Barbuy, Beatriz, Chiappini, Cristina, Pérez-Villegas, Angeles, Ortolani, Sergio, Friaça, Amâncio C. S., Queiroz, Anna B. A., Bica, Eduardo
Publikováno v:
A&A 671, A45 (2023)
The information on Galactic assembly time is imprinted on the chemodynamics of globular clusters. This makes them important probes that help us to understand the formation and evolution of the Milky Way. Discerning between in-situ and ex-situ origin
Externí odkaz:
http://arxiv.org/abs/2301.05227
Autor:
Razera, R., Barbuy, B., Moura, T. C., Ernandes, H., Pérez-Villegas, A., Souza, S. O., Chiappini, C., Queiroz, A. B. A., Anders, F., Fernández-Trincado, J. G., Friaça, A. C. S., Cunha, K., Smith, V. V., Santiago, B. X., Schiavon, R. P., Valentini, M., Minniti, D., Schultheis, M., Geisler, D., Sobeck, J., Placco, V. M, Zoccali, M.
The central part of the Galaxy host a multitude of stellar populations, including the spheroidal bulge stars, stars moved to the bulge through secular evolution of the bar, inner halo, inner thick disk, inner thin disk, as well as debris from past ac
Externí odkaz:
http://arxiv.org/abs/2208.06634
Autor:
Canelo, Carla M., Sales, Dinalva A., Friaça, Amâncio C. S., Pastoriza, Miriani, Menéndez-Delmestre, Karín
Polycyclic aromatic hydrocarbons (PAHs) are of great astrochemical and astrobiological interest due to their potential to form prebiotic molecules. We analyse the 7.7 and 8.6 ${\mu}$m PAH bands in 126 predominantly starburst-dominated galaxies extrac
Externí odkaz:
http://arxiv.org/abs/2109.01641
Autor:
Canelo, Carla M., Bronfman, Leonardo, Mendoza, Edgar, Duronea, Nicolas, Merello, Manuel, Carvajal, Miguel, Friaça, Amâncio C. S., Lepine, Jacques
Isocyanic acid (HNCO) is a simple molecule with a potential to form prebiotic and complex organic species. Using a spectral survey collected with the Atacama Pathfinder EXperiment (APEX), in this work we report the detection of 42 transitions of HNCO
Externí odkaz:
http://arxiv.org/abs/2104.10605
Since the epoch of cosmic star formation peak at $z \sim 2$, most of it is obscured in high mass galaxies, while in low mass galaxies the radiation escapes unobstructed. During the reionization epoch, the presence of evolved, dust obscured galaxies a
Externí odkaz:
http://arxiv.org/abs/2008.12798
Autor:
Beaklini, Pedro P. B., Mendoza, Edgar, Canelo, Carla M., Aleman, Isabel, Merello, Manuel, Kong, Shuo, Navarete, Felipe, Janot-Pacheco, Eduardo, Abraham, Zulema, Lépine, Jacques R. D., de Almeida, Amaury A., Friaça, Amâncio C. S.
Since the start of ALMA observatory operation, new and important chemistry of infrared cold core was revealed. Molecular transitions at millimeter range are being used to identify and to characterize these sources. We have investigated the 231 GHz AL
Externí odkaz:
http://arxiv.org/abs/1910.10805
Autor:
da Silveira, C. R., Barbuy, B., Friaça, A. C. S., Hill, V., Zoccali, M., Rafelski, M., Gonzalez, O. A., Minniti, D., Renzini, A., Ortolani, S.
Publikováno v:
Astronomy & Astrophysics, 2018
Oxygen and zinc in the Galactic bulge are key elements for the understanding of the bulge chemical evolution. Oxygen-to-iron abundance ratios provide a most robust indicator of the star formation rate and chemical evolution of the bulge. Zinc is enha
Externí odkaz:
http://arxiv.org/abs/1803.09942
Analyses of the polycyclic aromatic hydrocarbon (PAH) feature profiles, especially the 6.2 $\mu$m feature, could indicate the presence of nitrogen incorporated in their aromatic rings. In this work, 155 predominantly starburst-dominated galaxies (inc
Externí odkaz:
http://arxiv.org/abs/1708.07565
Autor:
Barbuy, B., Friaca, A. C. S., da Silveira, C. R., Hill, V., Zoccali, M., Minniti, D., Renzini, A., Ortolani, S., Gomez, A.
Publikováno v:
A&A 580, A40 (2015)
Zinc in stars is an important reference element because it is a proxy to Fe in studies of damped Lyman-alpha systems, permitting a comparison of chemical evolution histories of bulge stellar populations and DLAs. In terms of nucleosynthesis, it behav
Externí odkaz:
http://arxiv.org/abs/1506.01612