Listar por autor "Held, Enrico V."

Mostrando ítems 1-2 de 2

    • High-resolution abundance analysis of four red giants in the globular cluster NGC 6558 

      Barbuy, Beatriz; Muniz, Leone V.; Ortolani, Sergio; Ernandes, Heitor; Dias, Bruno Moreira de Souza; Saviane, Ivo; Kerber, Leandro de Oliveira; Bica, Eduardo Luiz Damiani; Pérez Villegas, Maria de Los Angeles; Rossi, Luca James; Held, Enrico V. (2018) [Artículo de periódico]
      Context. NGC 6558 is a bulge globular cluster with a blue horizontal branch (BHB), combined with a metallicity of [Fe/H] ≈ −1.0. It is similar to HP 1 and NGC 6522, which could be among the oldest objects in the Galaxy. ...

    • V, J, H and K imaging of the metal rich globular cluster NGC 6528 : reddening, metallicity, and distance based on cleaned colour-magnitude diagrams 

      Momany, Yazan; Ortolani, Sergio; Held, Enrico V.; Barbuy, Beatriz; Bica, Eduardo Luiz Damiani; Renzini, Alvio; Bedin, Luigi R.; Rich, Robert Michael; Marconi, Gianni (2003) [Artículo de periódico]
      New near-infrared observations of NGC6528 are presented. The JHKs observations complement a previous HST/NICMOS data set by Ortolani et al. (2001), in that they sample a larger area, contain a more numerous sample of red ...