Zobrazeno 1 - 10
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pro vyhledávání: '"Cavichia, O"'
The study of chemical evolution is of paramount importance for understanding the galaxies evolution. Models and observations propose an inside-out mechanism in the formation of spiral galaxy disks implying a negative radial gradient of elemental abun
Externí odkaz:
http://arxiv.org/abs/2411.15327
Autor:
Cavichia, O., Mollá, M., Bazán, J. J., Castrillo, A., Galbany, L., Millán-Irigoyen, I., Ascasibar, Y., Díaz, A. I, Monteiro, H.
The role of type Ia supernovae (SN Ia), mainly the Delay Time Distributions (DTDs) determined by the binary systems, and the yields of elements created by different explosion mechanisms, are studied by using the MulChem chemical evolution model appli
Externí odkaz:
http://arxiv.org/abs/2311.00076
Comet 29P/Schwassmann-Wachmann 1 dust environment from photometric observation at the SOAR Telescope
Autor:
Picazzio, E., Luk'yanyk, I. V., Ivanova, O. V., Zubko, E., Cavichia, O., Videen, G., Andrievsky, S. M.
We report photometric observations of comet 29P/Schwassmann-Wachmann 1 made on August 12, 2016 with the broadband B, V, R and I filters and the SOAR 4.1-meter telescope (Chile). We find the comet active at that time. Enhanced images obtained in all f
Externí odkaz:
http://arxiv.org/abs/2012.10718
Autor:
Ivanova, O. V., Luk'yanyk, I. V., Kiselev, N. N., Afanasiev, V. L., Picazzi, E., Cavichia, O., de Almeida, A. A., Andrievsky, S. M.
We carried out photometric and spectroscopic observations of comet 29P/Schwassmann-Wachmann 1 at the 6-m BTA telescope (SAO RAS, Russia) and the 1.6-m telescope of the National Laboratory for Astro-physics (LNA, Brazil) on February 20, 2012, and on M
Externí odkaz:
http://arxiv.org/abs/2012.10705
Autor:
Cavichia, O., Mollá, M.
Chemical evolution models (CEM) are important tools to understand the formation and evolution of the components of the Milky Way Galaxy and other galaxies in the universe. The Galactic bulge is the only galaxy bulge that can be resolved and can be st
Externí odkaz:
http://arxiv.org/abs/1905.02022
Akademický článek
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Autor:
Mollá, M., Díaz, Á. I., Cavichia, O., Gibson, B. K., Maciel, W. J., Costa, R. D. D., Ascasibar, Y., Few, C. G.
We study the evolution of oxygen abundance radial gradients as a function of time for the Milky Way Galaxy obtained with our {\sc Mulchem} chemical evolution model. We review the recent data of abundances for different objects observed in our Galacti
Externí odkaz:
http://arxiv.org/abs/1810.09182
Autor:
Cavichia, O., Mollá, M.
In this work we have assumed a Hernquist model with an inside-out formation for the Galactic bulge and, using a chemical evolution model, we were able obtain the bulge metallicity distribution function (MDF) for different radial regions. The prelimin
Externí odkaz:
http://arxiv.org/abs/1712.01604
Autor:
Sánchez-Menguiano, L., Sánchez, S. F., Pérez, I., Debattista, V. P., Ruiz-Lara, T., Florido, E., Cavichia, O., Galbany, L., Marino, R. A., Mast, D., Sánchez-Blázquez, P., Méndez-Abreu, J., de Lorenzo-Cáceres, A., Catalán-Torrecilla, C., Cano-Díaz, M., Márquez, I., McIntosh, D. H., Ascasibar, Y., García-Benito, R., Delgado, R. M. Gónzalez, Kehrig, C., López-Sánchez, Á. R., Mollá, M., Bland-Hawthorn, J., Walcher, C. J., Costantin, L.
Publikováno v:
A&A 603, A113 (2017)
Spiral arms are the most singular features in disc galaxies. These structures can exhibit different patterns, namely grand design and flocculent arms, with easily distinguishable characteristics. However, their origin and the mechanisms shaping them
Externí odkaz:
http://arxiv.org/abs/1705.05733
Abundances in photoionized nebulae of the Local Group and nucleosynthesis of intermediate mass stars
Photoionized nebulae, comprising HII regions and planetary nebulae, are excellent laboratories to investigate the nucleosynthesis and chemical evolution of several elements in the Galaxy and other galaxies of the Local Group. Our purpose in this inve
Externí odkaz:
http://arxiv.org/abs/1702.03721