Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...209.2706c&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #27.06; Bulletin of the American Astronomical Society, V
Astronomy and Astrophysics
Astronomy
Scientific paper
Originally invented as an extragalactic distance estimator, surface brightness fluctuations (SBFs) also serve as a powerful tool applied to investigate stellar population properties of early-type galaxies and globular clusters. Using Yonsei Population Synthesis models, we hereby present new theoretical predictions for far-UV to near-IR SBFs of old stellar systems. The main asset of our models is the realistic consideration of the systematic variation in temperature distribution of the horizontal-branch as a function of metallicity as well as age. In the light of the new models, we find that when the distance to a system is independently known, SBFs in shorter wavelength range (i.e., UV to B-band) are fully capable of examining the presence and temperature distribution of hot horizontal-branch stars and their progenies.
Cho Hyejeon
Lee Yeonbae
Yoon SangChul
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