Browsing by Subject "HORIZONTAL-BRANCH STARS"

Now showing items 1-2 of 2

    • A catalog of rotational and radial velocities for evolved stars - IV. Metal-poor stars 
      Medeiros, J. R. de; Silva, J. R. P.; Nascimento, J. D. do; Canto Martins, B. L.; Silva, L. da; Melo, C.; Burnet, M. (EDP SCIENCES S A, 2006-11)
      Aims. The present paper describes the first results of an observational program intended to refine and extend the existing v sin i measurements of metal-poor stars, with an emphasis on field evolved stars. Methods. The ...
    • Spectroscopy of quest RR Lyrae variables: The new virgo stellar stream 
      Duffau, Sonia; Zinn, Robert; Vivas, A. Katherina; Carraro, Giovanni; Méndez Bussard, René Alejandro; Winnick, Rebeccah; Gallart, Carme (UNIV CHICAGO PRESS, 2006-06-10)
      Eighteen RR Lyrae variables (RRLs) that lie in the "12(h).4 clump" identified by the Quasar Equatorial Survey Team ( QUEST) have been observed spectroscopically to measure their radial velocities and metal abundances. Ten ...