Navegação Ciências Exatas e da Terra por Assunto "Planetary nebulae: general"

Resultados 1-3 de 3

    • Discovery of an open cluster with a possible physical association with a planetary nebula 

      Bonatto, Charles Jose; Bica, Eduardo Luiz Damiani; Santos Junior, Joao Francisco Coelho dos (2008) [Artigo de periódico]
      We report the discovery of a new open cluster (OC) in the Galaxy at l = 167◦ 0 and b = −1◦ 0. Its field includes the planetary nebula (PN) PK 167−0.1. We study the possible associations of the PN/OC pairs NGC2818/2818A, ...

    • Investigating potential planetary nebula/cluster pairs 

      Moni Bidin, Christian; Majaess, Daniel J.; Bonatto, Charles Jose; Mauro, Francesco; Turner, D. G.; Geisler, Doug; Chené, André-Nicolas; Gormaz-Matamala, Alex C.; Borissova, Jura; Kurtev, Radostin Georgiev; Minniti, Dante; Carraro, Giovanni; Gieren, Wolfgang P. (2014) [Artigo de periódico]
      Context. Fundamental parameters characterizing the end-state of intermediate-mass stars may be constrained by discovering planetary nebulae (PNe) in open clusters (OCs). Cluster membership may be exploited to establish the ...

    • Molecular chemistry and the missing mass problem in planetary nebulae 

      Kimura, Rafael Kobata; Gruenwald, Ruth B.; Aleman, Isabel Regina Guerra (2012) [Artigo de periódico]
      Context. Detections of molecular lines, mainly from H₂ and CO, reveal molecular material in planetary nebulae. Observations of a variety of molecules suggest that the molecular composition in these objects differs from ...