Zobrazeno 1 - 10
of 647
pro vyhledávání: '"Kim, Sang Chul"'
Autor:
Ni, Yuan Qi, Moon, Dae-Sik, Drout, Maria R., Lee, Youngdae, Sandoval, Patrick, Shin, Jeehye, Park, Hong Soo, Kim, Sang Chul, Oh, Kyuseok
We conduct a systematic analysis of the early multi-band light curves and colors of 19 Type Ia Supernovae (SNe) from the Korea Microlensing Telescope Network SN Program, including 16 previously unpublished events. Seven are detected $\lesssim$ 1 day
Externí odkaz:
http://arxiv.org/abs/2408.06287
Autor:
Maurya, Jayanand, Samal, M. R., Amard, Louis, Zhang, Yu, Niu, Hubiao, Kim, Sang Chul, Joshi, Y. C., Kumar, B.
The presence of extended Main Sequence Turn-Off (eMSTO) in the open clusters has been attributed to various factors, such as spread in rotation rates, binary stars, and dust-like extinction from stellar excretion discs. We present a comprehensive ana
Externí odkaz:
http://arxiv.org/abs/2406.19132
We present the discovery of a peculiar dwarf nova KSP-OT-201712a using high-cadence, multi-color observations made with the Korea Microlensing Telescope Network. KSP-OT-201712a exhibits a rare presence of outbursts during standstills as well as stron
Externí odkaz:
http://arxiv.org/abs/2402.03584
Autor:
Byun, Woowon, Kim, Minjin, Sheen, Yun-Kyeong, Lee, Dongseob, Ho, Luis C., Ko, Jongwan, Seon, Kwang-Il, Shim, Hyunjin, Kim, Dohyeong, Kim, Yongjung, Lee, Joon Hyeop, Jeong, Hyunjin, Woo, Jong-Hak, Jeong, Woong-Seob, Park, Byeong-Gon, Kim, Sang Chul, Lee, Yongseok, Cha, Sang-Mok, Song, Hyunmi, Son, Donghoon, Yang, Yujin
We search for quasi-stellar objects (QSOs) in a wide area of the south ecliptic pole (SEP) field, which has been and will continue to be intensively explored through various space missions. For this purpose, we obtain deep broadband optical images of
Externí odkaz:
http://arxiv.org/abs/2307.15307
Autor:
Ni, Yuan Qi, Moon, Dae-Sik, Drout, Maria R., Matzner, Christopher D., Leong, Kelvin C. C., Kim, Sang Chul, Park, Hong Soo, Lee, Youngdae
\object{SN 2021aefx} is a normal Type Ia Supernova (SN) with red excess emission over the first $\sim$ 2 days. We present detailed analysis of this SN using our high-cadence KMTNet multi-band photometry, spectroscopy, and publicly available data. We
Externí odkaz:
http://arxiv.org/abs/2304.00625
Autor:
Fan, Tony Junjing, Moon, Dae-Sik, Park, Hong Soo, Zaritsky, Dennis, Kim, Sang Chul, Lee, Youngdae, Li, Ting S., Ni, Yuan Qi, Shin, Jeehye, Cha, Sang-Mok, Lee, Yongseok
We present the discovery of 48 new and the analysis of 55, including 7 previously discovered, dwarf galaxy candidates around the giant spiral galaxy NGC~2997 using deep $BVI$ images from the KMTNet Supernova Program. Their $V$-band central surface br
Externí odkaz:
http://arxiv.org/abs/2303.16849
We present a BVI photometric study of four old open clusters (OCs) in the Milky Way Galaxy, Czernik 30, Berkeley 34, Berkeley 75, and Berkeley 76 using the observation data obtained with the SMARTS 1.0 m telescope at the CTIO, Chile. These four OCs a
Externí odkaz:
http://arxiv.org/abs/2212.00286
Autor:
Byun, Woowon, Sheen, Yun-Kyeong, Seon, Kwang-Il, Ho, Luis C., Lee, Joon Hyeop, Jeong, Hyunjin, Kim, Sang Chul, Park, Byeong-Gon, Lee, Yongseok, Cha, Sang-Mok, Kim, Minjin
Recently, there has been an increasing demand for deep imaging surveys to investigate the history of the mass assembly of galaxies in detail by examining the remnants of mergers and accretions, both of which have very low surface brightness (LSB). In
Externí odkaz:
http://arxiv.org/abs/2209.00902
Autor:
Ni, Yuan Qi, Moon, Dae-Sik, Drout, Maria R., Polin, Abigail, Sand, David J., GonzÁlez-GaitÁn, Santiago, Kim, Sang Chul, Lee, Youngdae, Park, Hong Soo, Howell, D. Andrew, Nugent, Peter E., Piro, Anthony L., Brown, Peter J., Galbany, LluÍs, Burke, Jamison, Hiramatsu, Daichi, Hosseinzadeh, Griffin, Valenti, Stefano, Afsariardchi, Niloufar, Andrews, Jennifer E., Antoniadis, John, Beaton, Rachael L., Bostroem, K. Azalee, Carlberg, Raymond G., Cenko, S. Bradley, Cha, Sang-Mok, Dong, Yize, Gal-Yam, Avishay, Haislip, Joshua, Holoien, Thomas W. -S., Johnson, Sean D., Kouprianov, Vladimir, Lee, Yongseok, Matzner, Christopher D., Morrell, Nidia, Mccully, Curtis, Pignata, Giuliano, Reichart, Daniel E., Rich, Jeffrey, Ryder, Stuart D., Smith, Nathan, Wyatt, Samuel, Yang, Sheng
SN~2018aoz is a Type Ia SN with a $B$-band plateau and excess emission in the infant-phase light curves $\lesssim$ 1 day after first light, evidencing an over-density of surface iron-peak elements as shown in our previous study. Here, we advance the
Externí odkaz:
http://arxiv.org/abs/2206.12437
Autor:
Ni, Yuan Qi, Moon, Dae-Sik, Drout, Maria R., Polin, Abigail, Sand, David J., Gonzalez-Gaitan, Santiago, Kim, Sang Chul, Lee, Youngdae, Park, Hong Soo, Howell, D. Andrew, Nugent, Peter E., Piro, Anthony L., Brown, Peter J., Galbany, Lluis, Burke, Jamison, Hiramatsu, Daichi, Hosseinzadeh, Griffin, Valenti, Stefano, Afsariardchi, Niloufar, Andrews, Jennifer E., Antoniadis, John, Arcavi, Iair, Beaton, Rachael L., Bostroem, K. Azalee, Carlberg, Raymond G., Cenko, S. Bradley, Cha, Sang-Mok, Dong, Yize, Gal-Yam, Avishay, Haislip, Joshua, Holoien, Thomas W. -S., Johnson, Sean D., Kouprianov, Vladimir, Lee, Yongseok, Matzner, Christopher D., Morrell, Nidia, McCully, Curtis, Pignata, Giuliano, Reichart, Daniel E., Rich, Jeffrey, Ryder, Stuart D., Smith, Nathan, Wyatt, Samuel, Yang, Sheng
Type Ia Supernovae are thermonuclear explosions of white dwarf stars. They play a central role in the chemical evolution of the Universe and are an important measure of cosmological distances. However, outstanding questions remain about their origins
Externí odkaz:
http://arxiv.org/abs/2202.08889