We analyze the host galaxy of the tidal disruption object, Swift J1644+57, based on long-term optical to NIR data obtained with CQUEAN and UKIRT WFCAM observations. We decompose the bulge component using high resolution HST WFC3 images. We conclude that the host galaxy is bulge dominant. We investigate optical to NIR light curves and estimate the multi-band uxes of the host galaxy. We fit spectral energy distribution (SED) models in order to determine the stellar mass. Finally, we estimate the mass of the black hole in the center of the host galaxy based on several scale relations.

ABSTRACT
1. INTRODUCTION
2. MORPHOLOGY OF THE HOST GALAXY
3. LIGHT CURVES
4. SED FITTING
5. BLACK HOLE MASS
REFERENCES

• Yongmin Yoon(Center for the Exploration of the Origin of the Universe (CEOU) Astronomy Program, Department of Physics and Astronomy, Seoul National University)
• Myungshin Im(Center for the Exploration of the Origin of the Universe (CEOU) Astronomy Program, Department of Physics and Astronomy, Seoul National University)
• Seong-Kook Lee(Center for the Exploration of the Origin of the Universe (CEOU) Astronomy Program, Department of Physics and Astronomy, Seoul National University)
• Soojong Pak(School of Space Research, Kyung Hee University)
• IMS team(Center for the Exploration of the Origin of the Universe (CEOU) Astronomy Program, Department of Physics and Astronomy, Seoul National University)