3.17. MACHO RR Lyrae stars in the Galactic bulge: the spatial distribution Journal Articles uri icon

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abstract

  • We have analyzed a sample of 1150 type ab, and 550 type c RR Lyrae stars found in 24 of 94 bulge fields of the MACHO database. These fields cover a range in Galactocentric distances from 0.3 to 1.6 kpc. In combination with the data on the outer bulge fields of Alard (1997) and Wesselink (1987), here we present the surface density distribution of bulge RR Lyrae between 0.3 and 3 kpc.

authors

  • Minniti, D
  • Alcock, C
  • Alves, D
  • Cook, K
  • Marshall, S
  • Allsman, R
  • Axelrod, T
  • Freeman, K
  • Peterson, B
  • Rodgers, A
  • Griest, K
  • Lehner, M
  • Vandehei, T
  • Becker, A
  • Pratt, M
  • Stubbs, C
  • Tomaney, A
  • Quinn, P
  • Bennett, D
  • Sutherland, W
  • Welch, Douglas L

publication date

  • 1998