Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Wilton S. Dias"'
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 8 (2021)
In this work we explore the new catalog of galactic open clusters that became available recently, containing 1,750 clusters that have been re-analyzed using the Gaia DR2 catalog to determine the stellar memberships. We used the young open clusters as
Externí odkaz:
https://doaj.org/article/23fa6eb1d1e84d03a4c77b0b13787108
Autor:
Wilton S. Dias, Luis Paulo Piassi
Publikováno v:
Revista Brasileira de Ensino de Física, Vol 29, Iss 3, Pp 325-329 (2007)
Em aulas de ciências e astronomia básica é muito comum que os estudantes pensem que as estações do ano ocorrem por causa da variação da distância Terra-Sol. O argumento mais usado pelos professores contra essa concepção é o fato de as esta
Externí odkaz:
https://doaj.org/article/6c9ca6a15a6a4303808c37f970d183a1
Autor:
Wilton S. Dias, Jacques Lépine
Publikováno v:
Revista Brasileira de Ensino de Física, Vol 28, Iss 2, Pp 155-160
Nós determinamos a velocidade de rotação do padrão espiral da galáxia através da observação dos locais de nascimento de aglomerados abertos de estrelas no disco galáctico em função da sua idade. Nossa medida não depende de qualquer modelo
Externí odkaz:
https://doaj.org/article/c276d9f781bb480aae1db6e240a1b49c
Autor:
Beatriz L. Fernandes, Jane Gregorio-Hetem, C. E. Barbosa, Thierry Montmerle, F. Almeida-Fernandes, Antonio Kanaan, C. Mendes de Oliveira, Wilton S. Dias, Hélio D. Perottoni, Hektor Monteiro, C. Bonatto, Phillip A. B. Galli, M. Borges Fernandes, Vera Jatenco-Pereira, T. Santos-Silva, Eduardo Luiz Damiani Bica, T. P. Ribeiro, William Schoenell
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 508:1033-1055
Canis Major OB1 (CMa OB1) is a Galactic stellar association with a very intriguing star-formation scenario. There are more than two dozen known star clusters in its line of sight, but it is not clear which ones are physically associated with CMa OB1.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0739370c00e7644cb9484f20a65293c4
https://doi.org/10.1093/mnras/stab2409
https://doi.org/10.1093/mnras/stab2409
Autor:
Giovanni Carraro, André Moitinho, L. Villela, Hektor Monteiro, B. S. Alessi, Ernst Paunzen, Wilton S. Dias, Jacques Raymond Daniel Lépine
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 504:356-371
In this study we follow up our recent paper (Monteiro et al. 2020) and present a homogeneous sample of fundamental parameters of open clusters in our Galaxy, entirely based on Gaia DR2 data. We used published membership probability of the stars deriv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::de1157f923fd3804577aaa3a7149989c
https://doi.org/10.1093/mnras/stab770
https://doi.org/10.1093/mnras/stab770
Publikováno v:
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
We report astrophysical properties of 12 Milky Way open clusters located beyond the circle around the Sun where the number of catalogued open clusters is thought to be statistically complete. By using deep optical photometry, we estimated their ages
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5c88303d0e443137acf490c90514c08e
https://doi.org/10.1093/mnras/stz2050
https://doi.org/10.1093/mnras/stz2050
Autor:
Wilton S. Dias, Hektor Monteiro
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 487:2385-2406
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c28b9d9f4d09ba2ba6b71fd3ffe54862
https://doi.org/10.1093/mnras/stz1455
https://doi.org/10.1093/mnras/stz1455
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 8 (2021)
In this work we explore the new catalog of galactic open clusters that became available recently, containing 1,750 clusters that have been re-analyzed using the Gaia DR2 catalog to determine the stellar memberships. We used the young open clusters as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::71f6d93492845e78ffc48c121c086c4c
https://doi.org/10.3389/fspas.2021.656474
https://doi.org/10.3389/fspas.2021.656474
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
In this work we revisit the issue of the rotation speed of the spiral arms and the location of the corotation radius of our Galaxy. This research was performed using homogeneous data set of young open clusters (age < 50 Myr) determined from Gaia DR2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::70be43be7aabe492c05926c8358d1d2c
http://arxiv.org/abs/1905.08133
http://arxiv.org/abs/1905.08133
Autor:
R Prates, Wilton S. Dias, M Sacchi, Clemens D. Gneiding, Jacques Raymond Daniel Lépine, Hektor Monteiro
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
We present a study of 7 southern open clusters based on UBVRI CCD photomety (Johnsons-Cousins system) and Gaia DR2 data. Dias 4, Dias 6 and four other clusters had UBVRI photometric observations determined for the first time. From the observational U
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::00d130badd37e2ad3d1afa1fbc4fefb8
http://arxiv.org/abs/1808.08160
http://arxiv.org/abs/1808.08160