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RR Lyrae variables in Baade's window

Published online by Cambridge University Press:  14 August 2015

B. Blanco  and
V. M. Blanco
B. Blanco
Affiliation:
Cerro Tololo Inter-American Observatory∗
V. M. Blanco
Affiliation:
Cerro Tololo Inter-American Observatory∗

Extract

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In his pioneer study of the RR Lyrae variable stars near NGC 6522, in the relatively unobscured window close to the galactic center (1 = 0.9, b = −3.9), Baade (1963) was limited by the high zenith distance of the galactic center as seen from Palomar, and suggested that southern hemisphere observations would be of value. Subsequent studies of the region have been based on the variables found in Baade's original search. Southern hemisphere plates were taken by Hartwick et al. (1972), and their re-analysis of a sample of Baade's variables showed many periods to be in error. They did not, however, search the plates for new variables. Plaut (1973) re-analyzed all the variables but no search for new variables was done.

Type
IV. GALACTIC KINEMATICS AND DISTANCES
Information
Symposium - International Astronomical Union , Volume 84: The Large-Scale Characteristics of the Galaxy , 1979 , pp. 201 - 202
Copyright
Copyright © Reidel 1979 

References

Arp, H. C.: 1976, Astrophys. J. 141, pp. 43–72.Google Scholar
Baade, W.: 1963, Evolution of Stars and Galaxies, Harvard University Press, Chapter 21.Google Scholar
Bergh, S. van den: 1971, Astron. J. 76, pp. 1082–1098.Google Scholar
Hartwick, F. D. A., Hesser, J. E., and Hill, G.: 1972, Astrophys. J. 174, pp. 573–582.Google Scholar
Oort, J. H. and Plaut, L.: 1975, Astron. Astrophys. 41, pp. 71–86.Google Scholar
Oosterhoff, P. Th., Ponsen, J., and Schuurman, M. C.: 1967, Bull. Astron. Inst. Neth. Suppl. 1, pp. 397–413.Google Scholar
Plaut, L.: 1973, Astron. Astrophys. 26, pp. 317–319.Google Scholar