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3.17. MACHO RR Lyrae stars in the Galactic bulge: the spatial distribution

Published online by Cambridge University Press:  25 May 2016

D. Minniti ,
C. Alcock ,
D. Alves ,
K. Cook ,
S. Marshall ,
R. Allsman ,
T. Axelrod ,
K. Freeman ,
B. Peterson  and
A. Rodgers
...Show all authors
D. Minniti
Affiliation:
Lawrence Livermore National Laboratory
C. Alcock
Affiliation:
Lawrence Livermore National Laboratory
D. Alves
Affiliation:
Lawrence Livermore National Laboratory
K. Cook
Affiliation:
Lawrence Livermore National Laboratory
S. Marshall
Affiliation:
Lawrence Livermore National Laboratory
R. Allsman
Affiliation:
Mount Stromlo and siding Springs Observatory
T. Axelrod
Affiliation:
Mount Stromlo and siding Springs Observatory
K. Freeman
Affiliation:
Mount Stromlo and siding Springs Observatory
B. Peterson
Affiliation:
Mount Stromlo and siding Springs Observatory
A. Rodgers
Affiliation:
MSSSO and Univ. of California at San Diego
K. Griest
Affiliation:
MSSSO and Univ. of California at San Diego
M. Lehner
Affiliation:
MSSSO and Univ. of California at San Diego
T. Vandehei
Affiliation:
MSSSO and Univ. of California at San Diego
A. Becker
Affiliation:
University of Washington
M. Pratt
Affiliation:
University of Washington
C. Stubbs
Affiliation:
University of Washington
A. Tomaney
Affiliation:
University of Washington
P. Quinn
Affiliation:
ESO, Notre Dame, Oxford, and McMaster
D. Bennett
Affiliation:
ESO, Notre Dame, Oxford, and McMaster
W. Sutherland
Affiliation:
ESO, Notre Dame, Oxford, and McMaster
D. Welch
Affiliation:
ESO, Notre Dame, Oxford, and McMaster

Extract

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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.

Type
Part I. Stellar Cluster, Star Formation
Information
Symposium - International Astronomical Union , Volume 184: The Central Regions of the Galaxy and Galaxies , 1998 , pp. 123 - 124
Copyright
Copyright © Kluwer 1998 

References

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