Zobrazeno 1 - 10
of 22
pro vyhledávání: '"M. L. Das Chagas"'
Autor:
L. F. Barraza, R. L. Gomes, Y. S. Messias, I. C. Leão, L. A. Almeida, E. Janot-Pacheco, A. C. Brito, F. A. C. Brito, J. V. Santana, N. S. Gonçalves, M. L. das Chagas, M. A. Teixeira, J. R. De Medeiros, B. L. Canto Martins
Publikováno v:
The Astrophysical Journal. 924:117
Stellar rotation is a fundamental observable that drives different aspects of stellar and planetary evolution. In this work, we present an unprecedented manifold analysis of 160 B-type stars with light curves collected by the TESS space mission using
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5eba6717afaa5fb06cf0451b894cc0ab
https://doi.org/10.3847/1538-4357/ac3335
https://doi.org/10.3847/1538-4357/ac3335
Publikováno v:
Astronomy & Astrophysics. 650:A40
Kepler-30 is a unique target to study stellar activity and rotation in a young solar-like star accompanied by a compact planetary system. We use about 4 years of high-precision photometry collected by the Kepler mission to investigate the fluctuation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::63235401c5b2ddeb52f64946dab0e568
https://doi.org/10.1051/0004-6361/202140287
https://doi.org/10.1051/0004-6361/202140287
Autor:
I. C. Leão, Leonardo A. Almeida, R. L. Gomes, S. R. de Lira, M. L. Das Chagas, B. L. Canto Martins, Y. S. Messias, A. Bewketu Belete, J. R. De Medeiros, M. A. Teixeira, J. P. Bravo
Publikováno v:
The Astrophysical Journal Supplement Series. 250:20
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::66aed2e2f36bf508500fe977d1c1f732
https://doi.org/10.3847/1538-4365/aba73f
https://doi.org/10.3847/1538-4365/aba73f
A multifractal formalism is employed to analyse high-precision time-series data of \textit{Kepler} stars with surface differential rotation traces. The multifractal detrended moving average analysis (MFDMA) algorithm has been explored to characterize
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f188e872d51fd35102152a1231343087
In the present study, high-precision time series photometry for the active \emph{Kepler} stars is described in the language of multifractals. We explore the potential of using the rescaled range analysis ($R/S$) and multifractal detrended moving aver
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2deedba4bf647d1fac7f572df1549631
Autor:
I. C. Leão, M. A. Teixeira, M. Gomes de Souza, D. Freire da Silva, J. R. De Medeiros, A. D. da Costa, R. Silva Sobrinho, M. L. Das Chagas, B. L. Canto Martins, J. P. Bravo, D. B. de Freitas
Observations of circumstellar disks provide a powerful tool for our understanding of planetary systems dynamics. Analogs to the Solar System asteroid belts, debris disks result from the collision of the remaining solid material of the planet formatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a019b583dbd232fe1c28764ad86b37b9
Autor:
M. Gomes de Souza, D. B. de Freitas, M. L. Das Chagas, I. C. Leão, B. L. Canto Martins, Ana Rebeca de Britto Vaz de Carvalho Costa, J. R. De Medeiros, M. M. F. Nepomuceno
Publikováno v:
Repositório Institucional da UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
In the present study, we investigate the multifractal nature of a long-cadence time series observed by the \textit{Kepler} mission for a sample of 34 M dwarf stars and the Sun in its active phase. Using the Multifractal Detrending Moving Average algo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::948bd6fab85f6cfec3c17e855ad5fb45
Autor:
I. C. Leão, Renilson Rodrigues da Silva, D. Freire da Silva, B. L. Canto Martins, Alves Costa, M. L. Das Chagas, J. R. De Medeiros, J. P. Bravo, L. L. A. de Oliveira, S. Roque, F. Paz-Chinchón, G. Pereira de Oliveira
Publikováno v:
Repositório Institucional da UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
Rapidly rotating giant stars are relatively rare and may represent important stages of stellar evolution, resulting from stellar coalescence of close binary systems or accretion of sub-stellar companions by their hosting stars. In the present letter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d52ee6cad4d7d765c21c6205002ec9cc
Autor:
Timo Reinhold, Joe Llama, Rafael A. García, M. L. Das Chagas, Martin Bo Nielsen, K. L. Hay, J. R. De Medeiros, Tsevi Mazeh, Suzanne Aigrain, Amy McQuillan, James R. A. Davenport, A. F. Lanza, T. Ceillier
Publikováno v:
Repositório Institucional da UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
We present the results of a blind exercise to test the recoverability of stellar rotation and differential rotation in Kepler light curves. The simulated light curves lasted 1000 days and included activity cycles, Sun-like butterfly patterns, differe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5fe9e10054bd6fe2413ad22c02f22b7b
http://hdl.handle.net/20.500.12386/23927
http://hdl.handle.net/20.500.12386/23927
Autor:
D. B. de Freitas, B. L. Canto Martins, J. P. Bravo, A. D. Costa, C. Lopes, I. C. Leão, J. R. De Medeiros, M. L. Das Chagas, P. R. V. de Moraes Junior, M. M. F. Nepomuceno
Publikováno v:
The Astrophysical Journal. 839:134
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::331832ebac59ea08b522d7e132896049
https://doi.org/10.3847/1538-4357/aa6977
https://doi.org/10.3847/1538-4357/aa6977