Zobrazeno 1 - 10
of 122
pro vyhledávání: '"Lopes, C. E. A."'
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
Autor:
Fontinele, D. O., de Lima, P. D. S., Messias, Y. S., Gomes, R. L., Lopes, C. E. Ferreira, Martins, B. L. Canto, Leão, I. C., de Araújo, J. M., Pacheco, E. Janot, De Medeiros, J. R.
This study presents the results of a search for rotation signature in 250 Gaia DR3 Ultra-Cool Dwarfs (UCDs) with TESS light curves. We identified 71 targets with unambiguous periodicities, of which 61 present rotation signatures and a single source b
Externí odkaz:
http://arxiv.org/abs/2406.07154
Low mass ratio systems (LMR) are a very interesting class of contact eclipsing binaries challenging the theoretical models of stability. These systems are also considered possible progenitors of the rare low-mass optical transients called red novae.
Externí odkaz:
http://arxiv.org/abs/2405.10614
Autor:
Gomes, R. L., Martins, B. L. Canto, Fontinele, D. O., Almeida, L. A., Freire, R. Alves, Brito, A. C., de Amorim, R. G. S. B., Lopes, C. E. Ferreira, Hazarika, D., Janot-Pacheco, E., Leão, I. C., Messias, Y. S., Souza, R. A. A., De Medeiros, J. R.
Publikováno v:
The Astrophysical Journal, Volume 961, Issue 1, id.55, 12 pp. The Astrophysical Journal, Volume 961 (2024)
We report the discovery of three Transiting Exoplanet Survey Satellite Objects of Interest (TOI) with signatures of pulsation, observed in more than one sector. Our main goal is to explore how large is the variety of classical pulsators such as $\del
Externí odkaz:
http://arxiv.org/abs/2402.15935
Autor:
Papageorgiou, A., Christopoulou, P. -E., Lalounta, E., Lopes, C. E. Ferreira, Catelan, M., Drake, A. J., Xantzios, P., Alikakos, I.
We present a multi-band photometric analysis of CRTS J163819.6+03485, the first low mass ratio (LMR) contact binary system with a period under the contact binary (CB) period limit. The unprecedented combination of mass ratio and period makes this sys
Externí odkaz:
http://arxiv.org/abs/2306.11607
Autor:
Daza-Perilla, I. V., Gramajo, L. V., Lares, M., Palma, T., Lopes, C. E. Ferreira, Minniti, D., Clariá, J. J.
With the advent of large-scale photometric surveys of the sky, modern science witnesses the dawn of big data astronomy, where automatic handling and discovery are paramount. In this context, classification tasks are among the key capabilities a data
Externí odkaz:
http://arxiv.org/abs/2302.01200
Autor:
Papageorgiou, A., Christopoulou, P. -E., Lopes, C. E. Ferreira, Lalounta, E., Catelan, M., Drake, A. J.
We present the photometric analysis of three ultra-short period total eclipsing binaries in contact configuration, CRTS_J172718.0+431624, OGLE-BLG-ECL-000104, and OGLE-BLG-ECL-000012, mined from massive astronomical surveys. Using the available archi
Externí odkaz:
http://arxiv.org/abs/2212.03838
Autor:
Nikzat, F., Lopes, C. E. Ferreira, Catelan, M., Ramos, R. Contreras, Zoccali, M., Rojas-Arriagada, A., Braga, V. F., Minniti, D., Borissova, J., Becker, I.
Publikováno v:
A&A 660, A35 (2022)
Long-period variable stars (LPVs) are pulsating red giants, primarily in the asymptotic giant branch phase, and they include both Miras and semi-regular variables (SRVs). Their period-age and period-luminosity relations enable us to trace different s
Externí odkaz:
http://arxiv.org/abs/2203.06162
Autor:
Christopoulou, P. E., Lalounta, Eleni, Papageorgiou, Athanasios, Lopes, C. E. Ferreira, Catelan, Marcio, Drake, Andrew J.
We present the identification and photometric analysis of 30 new low mass ratio (LMR) totally eclipsing contact binaries found in Catalina Sky Survey data. The LMR candidates are identified using Fourier coefficients and visual inspection. We perform
Externí odkaz:
http://arxiv.org/abs/2202.12835
Autor:
Geisler, Doug, Villanova, Sandro, O'Connell, Julia E., Cohen, Roger E., Bidin, Christian Moni, Fernández-Trincado, José G., Muñoz, Cesar, Minniti, Dante, Zoccali, Manuela, Rojas-Arriagada, Alvaro, Ramos, Rodrigo Contreras, Catelan, Márcio, Mauro, Francesco, Cortés, Cristían, Lopes, C. E. Ferreira, Arentsen, Anke, Starkenburg, Else, Martin, Nicolas F., Tang, Baitian, Parisi, Celeste, Alonso-García, Javier, Gran, Felipe, Cunha, Katia, Smith, Verne, Majewski, Steven R., Jönsson, Henrik, García-Hernández, D. A., Horta, Danny, Mészáros, Szabolcs, Monaco, Lorenzo, Monachesi, Antonela, Muñoz, Ricardo R., Brownstein, Joel, Beers, Timothy C., Lane, Richard R., Barbuy, Beatriz, Sobeck, Jennifer, Henao, Lady, González-Díaz, Danilo, Miranda, Raúl E., Reinarz, Yared, Santander, Tatiana A.
Context. Bulge globular clusters (BGCs) are exceptional tracers of the formation and chemodynamical evolution of this oldest Galactic component. However, until now, observational difficulties have prevented us from taking full advantage of these powe
Externí odkaz:
http://arxiv.org/abs/2106.00024