Search Publications

Infrared Properties of OGLE4 Mira Variables in Our Galaxy

Suh, Kyung-Won

We investigate infrared properties of OGLE4 Mira variables in our Galaxy. For each object, we cross-identify the AllWISE, 2MASS, Gaia, and IRAS counterparts. We present various IR two-color diagrams (2CDs) and period-magnitude and period-color relations for the Mira variables. Generally, the Mira variables with longer periods are brighter in the I…

Infrared Two-Color Diagrams of AGB Stars and Planetary Nebulae Using WISE Data

Suh, Kyung-Won

We present various infrared two-color diagrams (2CDs) using WISE data for asymptotic giant branch (AGB) stars and Planetary Nebulae (PNe) and investigate possible evolutionary tracks. We use the sample of 5036 AGB stars, 660 post-AGB stars, and 2748 PNe in our Galaxy. For each object, we cross-identify the IRAS, AKARI, WISE, and 2MASS counterparts…

Properties of the SCUBA-2 850 µm Sources in the Akari NEP-Deep Field

Goto, Tomotsugu; Kim, Seong Jin; Pearson, Chris +15 more

We carry out the study of SMGs in the AKARI NEP-Deep field using James Clerk Maxwell Telescope (JCMT) SCUBA-2 850 µm source catalog released as a part of SCUBA-2 Cosmology Legacy Survey (S2CLS) program. The SCUBA-2 850 µm map has a root mean square (rms) noise of 1.2 mJy beam^{-1} and covers an area of 0.60 degree^{2}. We find 4 sub-mi…

Monitoring Observatinos of H2O and SiO Masers Toward Post-AGB Stars

Kim, Jaeheon; Cho, Se-Hyung; Yoon, Dong-Hwan

Optical Properties of Amorphous Alumina Dust in the Envelopes around O-Rich AGB Stars

Suh, Kyung-Won

We investigate optical properties of amorphous alumina (Al_2O_3) dust grains in the envelopes around O-rich asymptotic giant branch (AGB) stars considering the laboratory measured optical data. We derive the optical constants of amorphous alumina in a wide wavelength range that satisfy the Kramers-Kronig relation and reproduce the laboratory measu…

Optical Survey with KMTNet for Dusty Star-Forming Galaxies in the Akari Deep Field South

Kim, Seong Jin; Lee, Chung-Uk; Cha, Sang-Mok +17 more

A New Catalog of Silicate Carbon Stars

Suh, Kyung-Won; Kwon, Young-Joo

Astrophysics of Dusty Stellar Winds from AGB Stars

Suh, Kyung-Won

Properties of OH, SIO, and H2O Maser Emission in O-Rich AGB Stars

Suh, Kyung-Won; Kwon, Young-Joo

Dust Around Herbig AE/Be Stars

Suh, Kyung-Won

We model dust around Herbig Ae/Be stars using a radiative transfer model for multiple isothermal circumstellar dust shells to reproduce the multiple broad peaks in their spectral energy distributions (SEDs). Using the opacity functions for various types of dust grains at different temperatures, we calculate the radiative transfer model SEDs for mu…