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- Korea Astronomy and Space Science InstituteKR150 papers
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16 papers · 1 filter
A Comparison Between Global Proxies of the Sun's Magnetic Activity Cycle: Inferences from Helioseismology
A. -M. Broomhall, V. M. Nakariakov
The last solar minimum was, by recent standards, unusually deep and long. We are now close to the maximum of the subsequent solar cycle, which is relatively weak. In this article w…
UV solar irradiance in observations and the NRLSSI and SATIRE-S models
K. L. Yeo, W. T. Ball, N. A. Krivova +3
Total solar irradiance and UV spectral solar irradiance have been monitored since 1978 through a succession of space missions. This is accompanied by the development of models aime…
Radio Observations of the Star Formation Activities in the NGC 2024 FIR 4 Region
Minho Choi, Miju Kang, Jeong-Eun Lee
Star formation activities in the NGC 2024 FIR 4 region were studied by imaging centimeter continuum sources and water maser sources using several archival data sets from the Very L…
High Resolution Optical and NIR Spectra of HBC 722
Jeong-Eun Lee, Sunkyung Park, Joel D. Green +4
We present the results of high resolution (R30,000) optical and near-IR spectroscopic monitoring observations of HBC 722, a recent FU Orionis object that underwent an accretio…
The HCN/HNC abundance ratio toward different evolutionary phases of massive star formation
Mihwa Jin, Jeong-Eun Lee, Kee-Tae Kim
Using the HCN and HNC J=1--0 line observations, the abundance ratio of HCN/HNC has been estimated for different evolutionary stages of massive star formation: Infrared dark clouds…
Towards unity of families: anti-SU(7) from Z(12-I) orbifold compactification
Jihn E. Kim
The problem of families, "Why are there three families of fermions?", is a long awaited question to be answered within a reasonable framework. We propose anti-SU() groups for th…