Evidence for an Old Galactic Bulge from RR Lyrae Stars in Baade’s Window: The Inside-Out Picture of Galaxy Formation

1992 ◽  
pp. 446-446 ◽  
Author(s):  
Young-Wook Lee
Keyword(s):  
Galaxy Formation ◽  
Galactic Bulge ◽  
Rr Lyrae Stars ◽  
Rr Lyrae ◽  
Lyrae Stars ◽  
Inside Out

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

1998 ◽  
Vol 184 ◽  
pp. 123-124
Author(s):  
D. Minniti ◽  
C. Alcock ◽  
D. Alves ◽  
K. Cook ◽  
S. Marshall ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Density Distribution ◽  
Surface Density ◽  
Galactic Bulge ◽  
Rr Lyrae Stars ◽  
Rr Lyrae ◽  
Type C ◽  
Type Ab ◽  
Lyrae Stars

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.

scholarly journals THE EXTINCTION TOWARD THE GALACTIC BULGE FROM RR LYRAE STARS

2008 ◽  
Vol 135 (2) ◽  
pp. 631-636 ◽  
Author(s):  
Andrea Kunder ◽  
Piotr Popowski ◽  
Kem H. Cook ◽  
Brian Chaboyer
Keyword(s):  
Galactic Bulge ◽  
Rr Lyrae Stars ◽  
Rr Lyrae ◽  
Lyrae Stars

scholarly journals RR Lyraes in the Magellanic Clouds

1993 ◽  
Vol 139 ◽  
pp. 15-20
Author(s):  
Alistair R. Walker
Keyword(s):  
Recent Work ◽  
Galaxy Formation ◽  
Magellanic Clouds ◽  
Distance Modulus ◽  
Rr Lyrae Stars ◽  
Rr Lyrae ◽  
Star Studies ◽  
Absolute Magnitudes ◽  
Halo Population ◽  
Lyrae Stars

AbstractRecent work on the Magellanic Cloud RR Lyrae stars is reviewed. The absolute magnitudes of LMC RR Lyraes, when calibrated from a distance modulus of 18.5 mag, disagrees with the Galactic calibration. The revised distance scale makes distances greater, and ages younger, within our galaxy. Field star studies show that the “halo” population of the LMC is very similar to that of our own Galaxy outside of the solar circle. This result supports a Searle and Zinn model of galaxy formation.

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