H
Hektor Monteiro
Researcher at Universidade Federal de Itajubá
Publications - 77
Citations - 1526
Hektor Monteiro is an academic researcher from Universidade Federal de Itajubá. The author has contributed to research in topics: Planetary nebula & Open cluster. The author has an hindex of 18, co-authored 71 publications receiving 1265 citations. Previous affiliations of Hektor Monteiro include National Science Foundation & Georgia State University.
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Journal ArticleDOI
A ring system detected around the centaur (10199) chariklo
Felipe Braga-Ribas,Bruno Sicardy,Jose Luis Ortiz,Colin Snodgrass,F. Roques,R. Vieira-Martins,R. Vieira-Martins,R. Vieira-Martins,Julio Camargo,Marcelo Assafin,Rene Duffard,Emmanuel Jehin,Joe Pollock,Rodrigo Leiva,Marcelo Emilio,D. I. Machado,C. Colazo,E. Lellouch,Jesper Skottfelt,Jesper Skottfelt,Michaël Gillon,N. Ligier,L. Maquet,G. Benedetti-Rossi,A. Ramos Gomes,Pierre Kervella,Hektor Monteiro,Rafael Sfair,M. El Moutamid,M. El Moutamid,Gonzalo Tancredi,J. Spagnotto,Alain Maury,Nicolás Morales,Ricardo Gil-Hutton,S. Roland,A. Ceretta,Shenghong Gu,Xuefeng Wang,Kasper Harpsøe,Kasper Harpsøe,Markus Rabus,Markus Rabus,Jean Manfroid,Cyrielle Opitom,L. Vanzi,L. Mehret,L. Lorenzini,E. M. Schneiter,R. Melia,J. Lecacheux,François Colas,Frédéric Vachier,Thomas Widemann,L. Almenares,R. G. Sandness,F. Char,V. Perez,P. Lemos,Nicolás Marín Martínez,U. G. Jørgensen,U. G. Jørgensen,Martin Dominik,Fernando Roig,Daniel E. Reichart,Aaron P. LaCluyze,J. B. Haislip,K. M. Ivarsen,J. P. Moore,N. R. Frank,D. G. Lambas,D. G. Lambas +71 more
TL;DR: Observations of a multichord stellar occultation revealed the presence of a ring system around (10199) Chariklo, which is a Centaur—that is, one of a class of small objects orbiting primarily between Jupiter and Neptune—with an equivalent radius of 124 9 kilometres.
Journal ArticleDOI
Proper motions of the optically visible open clusters based on the UCAC4 catalog
Wilton S. Dias,Wilton S. Dias,Hektor Monteiro,T. C. Caetano,T. C. Caetano,Jacques Raymond Daniel Lépine,Marcelo Assafin,Adhimar Flávio Oliveira +7 more
TL;DR: In this paper, a catalog of mean proper motions and membership probabilities of individual stars for optically visible open clusters, which have been determined using data from the UCAC4 catalog in a homogeneous way, was presented.
Journal ArticleDOI
Updated parameters of 1743 open clusters based on Gaia DR2
Wilton S. Dias,Hektor Monteiro,André Moitinho,Jacques Raymond Daniel Lépine,Giovanni Carraro,Ernst Paunzen,B. S. Alessi,L. Villela,L. Villela +8 more
TL;DR: In this article, Monteiro et al. presented a homogeneous sample of fundamental parameters of open clusters in our Galaxy, entirely based on Gaia DR2 data, using published membership probability of the stars derived from Gaia DR 2 data.
Journal ArticleDOI
Fitting Isochrones to Open Cluster photometric data: A new global optimization tool
TL;DR: In this paper, a new technique to fit color-magnitude diagrams of open clusters based on the cross-entropy global optimization algorithm is presented, which is shown to be reliable and free of the subjectivity of most previous visual isochrone fitting techniques.
Journal ArticleDOI
A multimembership catalogue for 1876 open clusters using UCAC4 data
L. Sampedro,L. Sampedro,Wilton S. Dias,Emilio J. Alfaro,Hektor Monteiro,Alberto Molino,Alberto Molino +6 more
TL;DR: The authors acknowledge financial support from the Spanish Ministry for Economy and Competitiveness and FEDER funds through grants AYA-2010-17631, BES-2011-049077, AYA2013-40611-P and AYA016-75931-C2-1-P.