The Luminosities of RR Lyrae Stars

Details The Luminosities of RR Lyrae Stars The Luminosities of RR Lyrae Stars

May 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aas...186.1206m&link_type=abstract

American Astronomical Society, 186th AAS Meeting, #12.06; Bulletin of the American Astronomical Society, Vol. 27, p.828

Astronomy and Astrophysics

Astronomy

Scientific paper

The new Kurucz model atmospheres indicate that the temperatures of RR Lyrae stars inferred from optical and near infrared color indices are approximately 200(o) K to 300(o) K hotter than those inferred from older models. If these temperatures are adopted we find the absolute magnitudes of the RR Lyrae stars are 0.2 mag brighter than previously assumed. If we adopt the new magnitude scale we find: 1) the ages of globular clusters are reduced 2) the distance to the galactic center is increased, and 3) the RR Lyrae stars give distances to local group galaxies identical to distances inferred from classical cepheids.

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