Intensive Monitoring Survey of Nearby Galaxies (IMSNG) is a high cadence observation program monitoring nearby galaxies with high probabilities of hosting supernovae (SNe). IMSNG aims to constrain the SN explosion mechanism by inferring sizes of SN progenitor systems through the detection of the shock-heated emission that lasts less than a few days after the SN explosion. To catch the signal, IMSNG utilizes a network of 0.5-m to 1-m class telescopes around the world and monitors the images of 60 nearby galaxies at distances D < 50 Mpc to a cadence as short as a few hours. The target galaxies are bright in near-ultraviolet (NUV) with MNUV < - 18.4 AB mag and have high probabilities of hosting SNe (0.06 SN yr-1 per galaxy). With this strategy, we expect to detect the early light curves of 3.4 SNe per year to a depth of R  19:5 mag, enabling us to detect the shock-heated emission from a progenitor star with a radius as small as 0.1 R. The accumulated data will be also useful for studying faint features around the target galaxies and other science projects. So far, 18 SNe have occurred in our target fields (16 in IMSNG galaxies) over 5 years, confirming our SN rate estimate of 0.06 SN yr-1 per galaxy.

Abstract
1. INTRODUCTION
2. TARGET SELECTION
3. FACILITIES
4. SN RATE OF UV-SELECTED GALAXIES
5. SNE AND OTHER TRANSIENTS IN IMSNG
6. ADDITIONAL SCIENCE CASES
REFERENCES

• Myungshin Im(Center for the Exploration of the Origin of the Universe, Department of Physics and Astronomy, Seoul National University/Astronomy Program, Department of Physics and Astronomy, Seoul National University) Corresponding author
• Changsu Choi(Center for the Exploration of the Origin of the Universe, Department of Physics and Astronomy, Seoul National University/Astronomy Program, Department of Physics and Astronomy, Seoul National University)
• Sungyong Hwang(Center for the Exploration of the Origin of the Universe, Department of Physics and Astronomy, Seoul National University/Astronomy Program, Department of Physics and Astronomy, Seoul National University)
• Gu Lim(Center for the Exploration of the Origin of the Universe, Department of Physics and Astronomy, Seoul National University/Astronomy Program, Department of Physics and Astronomy, Seoul National University)
• Joonho Kim(Center for the Exploration of the Origin of the Universe, Department of Physics and Astronomy, Seoul National University/Astronomy Program, Department of Physics and Astronomy, Seoul National University)
• Sophia Kim(Center for the Exploration of the Origin of the Universe, Department of Physics and Astronomy, Seoul National University/Astronomy Program, Department of Physics and Astronomy, Seoul National University)
• Gregory S. H. Paek(Center for the Exploration of the Origin of the Universe, Department of Physics and Astronomy, Seoul National University/Astronomy Program, Department of Physics and Astronomy, Seoul National University)
• Sang-Yun Lee(Center for the Exploration of the Origin of the Universe, Department of Physics and Astronomy, Seoul National University/Astronomy Program, Department of Physics and Astronomy, Seoul National University)
• Sung-Chul Yoon(Astronomy Program, Department of Physics and Astronomy, Seoul National University)
• Hyunjin Jung(Department of Physics, Pohang University of Science and Technology)
• Hyun-Il Sung(Korea Astronomy and Space Science Institute)
• Yeong-beom Jeon(Korea Astronomy and Space Science Institute)
• Shuhrat Ehgamberdiev(Ulugh Beg Astronomical Institute, Uzbek Academy of Sciences)
• Otabek Burhonov(Ulugh Beg Astronomical Institute, Uzbek Academy of Sciences)
• Davron Milzaqulov(Ulugh Beg Astronomical Institute, Uzbek Academy of Sciences)
• Omon Parmonov(Ulugh Beg Astronomical Institute, Uzbek Academy of Sciences)
• Sang Gak Lee(Astronomy Program, Department of Physics and Astronomy, Seoul National University/National Youth Space Center)
• Wonseok Kang(National Youth Space Center)
• Taewoo Kim(National Youth Space Center/Department of Astronomy and Space Science, Chungbuk National University)
• Sun-gill Kwon(National Youth Space Center)
• Soojong Pak(Center for the Exploration of the Origin of the Universe, Department of Physics and Astronomy, Seoul National University/School of Space Research, Kyung Hee University)
• Tae-Geun Ji(Center for the Exploration of the Origin of the Universe, Department of Physics and Astronomy, Seoul National University/School of Space Research, Kyung Hee University)
• Hye-In Lee(Center for the Exploration of the Origin of the Universe, Department of Physics and Astronomy, Seoul National University/School of Space Research, Kyung Hee University)
• Woojin Park(Center for the Exploration of the Origin of the Universe, Department of Physics and Astronomy, Seoul National University/School of Space Research, Kyung Hee University)
• Hojae Ahn(Department of Astronomy and Space Science, Kyung Hee University)
• Seoyeon Byeon(Department of Astronomy and Space Science, Kyung Hee University)
• Jimin Han(Department of Astronomy and Space Science, Kyung Hee University)
• Coyne Gibson(McDonald Observatory, The University of Texas at Austin)
• J. Craig Wheeler(McDonald Observatory, The University of Texas at Austin/Department of Astronomy, The University of Texas at Austin)
• John Kuehne(McDonald Observatory, The University of Texas at Austin)
• Chris Johns-Krull(Department of Physics & Astronomy, Rice University)
• Jennifer Marshall(Mitchell Institute for Fundamental Physics and Astronomy and Department of Physics and Astronomy, Texas A&M University)
• Minhee Hyun(Center for the Exploration of the Origin of the Universe, Department of Physics and Astronomy, Seoul National University/Astronomy Program, Department of Physics and Astronomy, Seoul National University)
• Seong-Kook J. Lee(Center for the Exploration of the Origin of the Universe, Department of Physics and Astronomy, Seoul National University/Astronomy Program, Department of Physics and Astronomy, Seoul National University)
• Yongjung Kim(Center for the Exploration of the Origin of the Universe, Department of Physics and Astronomy, Seoul National University/Astronomy Program, Department of Physics and Astronomy, Seoul National University)
• Yongmin Yoon(Center for the Exploration of the Origin of the Universe, Department of Physics and Astronomy, Seoul National University/Astronomy Program, Department of Physics and Astronomy, Seoul National University)
• Insu Paek(Center for the Exploration of the Origin of the Universe, Department of Physics and Astronomy, Seoul National University/Astronomy Program, Department of Physics and Astronomy, Seoul National University)
• Suhyun Shin(Center for the Exploration of the Origin of the Universe, Department of Physics and Astronomy, Seoul National University/Astronomy Program, Department of Physics and Astronomy, Seoul National University)
• Yoon Chan Taak(Center for the Exploration of the Origin of the Universe, Department of Physics and Astronomy, Seoul National University/Astronomy Program, Department of Physics and Astronomy, Seoul National University)
• Juhyung Kang(Astronomy Program, Department of Physics and Astronomy, Seoul National University)
• Seoyeon Choi(Phillips Academy)
• Mankeun Jeong(Astronomy Program, Department of Physics and Astronomy, Seoul National University)
• Moo-Keon Jung(Astronomy Program, Department of Physics and Astronomy, Seoul National University)
• Hwara Kim(Department of Earth Science Education, Seoul National University)
• Jisu Kim(Department of Astronomy and Space Science, Kyung Hee University)
• Dayae Lee(Department of Astronomy, Yonsei University)
• Bomi Park(Center for the Exploration of the Origin of the Universe, Department of Physics and Astronomy, Seoul National University)
• Keunwoo Park(Department of Astronomy and Space Science, Sejong University)
• Seong A O(Astronomy Program, Department of Physics and Astronomy, Seoul National University)