Zobrazeno 1 - 10
of 609
pro vyhledávání: '"Fraga, L"'
Autor:
Saito, R. K., Hempel, M., Alonso-García, J., Lucas, P. W., Minniti, D., Alonso, S., Baravalle, L., Borissova, J., Caceres, C., Chené, A. N., Cross, N. J. G., Duplancic, F., Garro, E. R., Gómez, M., Ivanov, V. D., Kurtev, R., Luna, A., Majaess, D., Navarro, M. G., Pullen, J. B., Rejkuba, M., Sanders, J. L., Smith, L. C., Albino, P. H. C., Alonso, M. V., Amôres, E. B., Angeloni, R., Arias, J. I., Arnaboldi, M., Barbuy, B., Bayo, A., Beamin, J. C., Bedin, L. R., Bellini, A., Benjamin, R. A., Bica, E., Bonatto, C. J., Botan, E., Braga, V. F., Brown, D. A., Cabral, J. B., Camargo, D., Garatti, A. Caratti o, Carballo-Bello, J. A., Catelan, M., Chavero, C., Chijani, M. A., Clariá, J. J., Coldwell, G. V., Peña, C. Contreras, Ramos, R. Contreras, Corral-Santana, J. M., Cortés, C. C., Cortés-Contreras, M., Cruz, P., Daza-Perilla, I. V., Debattista, V. P., Dias, B., Donoso, L., D'Souza, R., Emerson, J. P., Federle, S., Fermiano, V., Fernandez, J., Fernández-Trincado, J. G., Ferreira, T., Lopes, C. E. Ferreira, Firpo, V., Flores-Quintana, C., Fraga, L., Froebrich, D., Galdeano, D., Gavignaud, I., Geisler, D., Gerhard, O. E., Gieren, W., Gonzalez, O. A., Gramajo, L. V., Gran, F., Granitto, P. M., Griggio, M., Guo, Z., Gurovich, S., Hilker, M., Jones, H. R. A., Kammers, R., Kuhn, M. A., Kumar, M. S . N., Kundu, R., Lares, M., Libralato, M., Lima, E., Maccarone, T. J., Cortés, P. Marchant, Martin, E. L., Masetti, N., Matsunaga, N., Mauro, F., McDonald, I., Mejías, A., Mesa, V., Milla-Castro, F. P., Minniti, J. H., Bidin, C. Moni, Montenegro, K., Morris, C., Motta, V., Navarete, F., Molina, C. Navarro, Nikzat, F., Castellón, J. L. Nilo, Obasi, C., Ortigoza-Urdaneta, M., Palma, T., Parisi, C., Ramírez, K. Pena, Pereyra, L., Perez, N., Petralia, I., Pichel, A., Pignata, G., Alegría, S. Ramírez, Rojas, A. F., Rojas, D., Roman-Lopes, A., Rovero, A. C., Saroon, S., Schmidt, E. O., Schröder, A. C., Schultheis, M., Sgró, M. A., Solano, E., Soto, M., Stecklum, B., Steeghs, D., Tamura, M., Tissera, P., Valcarce, A. A. R., Valotto, C. A., Vasquez, S., Villalon, C., Villanova, S., Cádiz, F. Vivanco, Bacigalupo, R. Zelada, Zijlstra, A., Zoccali, M.
Publikováno v:
A&A 689, A148 (2024)
The ESO public survey VISTA Variables in the V\'ia L\'actea (VVV) surveyed the inner Galactic bulge and the adjacent southern Galactic disk from $2009-2015$. Upon its conclusion, the complementary VVV eXtended (VVVX) survey has expanded both the temp
Externí odkaz:
http://arxiv.org/abs/2406.16646
We study in detail the inner 600 pc of the Seyfert 2 galaxy ESO138-G001 by means of the SOAR Integral Field Spectrograph (SIFS) attached to the SOAR telescope. This source is known for displaying a very rich coronal line spectrum and a blob of high-e
Externí odkaz:
http://arxiv.org/abs/2312.09184
Autor:
Saroon, S., Dias, B., Tsujimotto, T., Parisi, M. C., Maia, F., Kerber, L., Bekki, K., Minniti, D., Oliveira, R. A. P., Westera, P., Santrich, O. J. K., Bica, E., Sanmartim, D., Quint, B. C., Fraga, L.
Publikováno v:
A&A 677, A35 (2023)
The chemical evolution history of the Small Magellanic Cloud (SMC) has been a matter of debate for decades. The challenges in understanding the SMC chemical evolution are related to a very slow star formation rate (SFR) combined with bursts triggered
Externí odkaz:
http://arxiv.org/abs/2307.08709
Autor:
Oliveira, R. A. P., Maia, F. F. S., Barbuy, B., Dias, B., Santos Jr., J. F. C., Souza, S. O., Kerber, L. O., Bica, E., Sanmartim, D., Quint, B., Fraga, L., Armond, T., Minniti, D., Parisi, M. C., Santrich, O. J. Katime, Angelo, M. S., Pérez-Villegas, A., De Bórtoli, B. J.
The formation scenario of the Magellanic Bridge during an encounter between the Large and Small Magellanic Clouds $\sim200\,$Myr ago, as proposed by $N$-body models, would be imprinted in the chemical enrichment and kinematics of its stars, and sites
Externí odkaz:
http://arxiv.org/abs/2306.05503
Publikováno v:
In Ceramics International 1 December 2024 50(23) Part A:49112-49118
Autor:
Dias, B., Parisi, M. C., Angelo, M., Maia, F., Oliveira, R. A. P., Souza, S. O., Kerber, L. O., Santos Jr., J. F. C., Pérez-Villegas, A., Sanmartim, D., Quint, B., Fraga, L., Barbuy, B., Bica, E., Santrich, O. J. Katime, Hernandez-Jimenez, J. A., Geisler, D., Minniti, D., De Bórtoli, B. J., Bassino, L. P., Rocha, J. P.
The structure of the Small Magellanic Cloud (SMC) is very complex, in particular in the periphery that suffers more from the interactions with the Large Magellanic Cloud (LMC). A wealth of observational evidence has been accumulated revealing tidal t
Externí odkaz:
http://arxiv.org/abs/2201.11119
Autor:
Santos Jr., J. F. C., Maia, F. F. S., Dias, B., Kerber, L. de O., Piatti, A. E., Bica, E., Angelo, M. S., Minniti, D., Pérez-Villegas, A., Roman-Lopes, A., Westera, P., Fraga, L., Quint, B., Sanmartim, D.
We provide a homogeneous set of structural parameters of 83 star clusters located at the periphery of the Small Magellanic Cloud (SMC) and the Large Magellanic Cloud (LMC). The clusters' stellar density and surface brightness profiles were built from
Externí odkaz:
http://arxiv.org/abs/2008.04399
Autor:
Mikulasek, Z., Paunzen, E., Huemmerich, S., Niemczura, E., Walczak, P., Fraga, L., Bernhard, K., Janik, J., Hubrig, S., Jaervinen, S., Jagelka, M., Pintado, O. I., Krticka, J., Prisegen, M., Skarka, M., Zejda, M., Ilyin, I., Pribulla, T., Kaminski, K., Kaminska, M. K., Tokarek, J., Zielinski, P.
Chemically peculiar (CP) stars of the upper main sequence are characterised by specific anomalies in the photospheric abundances of some chemical elements. The group of CP2 stars, which encompasses classical Ap and Bp stars, exhibits strictly periodi
Externí odkaz:
http://arxiv.org/abs/2008.02833
Autor:
Romero, Alejandra D., Amaral, L. Antunes, Kepler, S. O., Fraga, L., Kurtz, D., Shibahashi, H.
We report the detection of periodic variations on the T_eff ~32 000 K DA white dwarf star HE 1017-1352. We obtained time series photometry using the 4.1 m SOAR telescope on three separate nights for a total of 16.8 h. From the frequency analysis we f
Externí odkaz:
http://arxiv.org/abs/2006.01008
Autor:
Romero, Alejandra D., Amaral, L. Antunes, Klippel, T., Sanmartim, D., Fraga, L, Ourique, G., Pelisoli, I., Lauffer, G. R., Kepler, S. O., Koester, D.
We perform ground based photometric observations of 22 DA white dwarf stars, 10 already known ZZ Cetis and 12 candidates with atmospheric parameters inside the classical instability strip. We report on the discovery of four new variable DA white dwar
Externí odkaz:
http://arxiv.org/abs/1909.05555