Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21934812g&link_type=abstract
American Astronomical Society, AAS Meeting #219, #348.12
Astronomy and Astrophysics
Astronomy
Scientific paper
Understanding RR Lyrae pulsating variable stars in mid-infrared wavebands can lead to more accurate distance measurements and consequently improve the cosmic distance ladder. We present a group of >1000 previously identified RR Lyrae variables well-observed with the Wide-field Infrared Survey Explorer (WISE) telescope, combining published optical periods and mid-IR-derived periods. We explore how the shape of the generic RR Lyrae mid-infrared light curve evolves in period-space, comparing the structural features of the light curves in mid-infrared bands to those present in optical bands. From the period-space analysis, we hope to improve the classification methods of RR Lyrae variables, which affect their potential as distance indicators by minimizing distance uncertainty.
Bloom Josh S.
Butler Nathaniel R.
Gavrilchenko Tatyana
Klein Christopher R.
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