A search for hot and bright white dwarfs (WDs) in the Milky Way globular clusters M13 (NGC 6205) and M22 (NGC 6656) is carried out using the deep and homogeneous V I photometric catalog of Anderson et al. and and Sarajedini et al., based on data taken with the ACS/WFC aboard the Hubble Space Telescope (HST). V versus V − I color-magnitude diagrams (CMDs) of M13 and M22 are constructed and numerous spurious detections are rejected according to their photometric quality parameters qfit(V ) and qfit(I). In the case of M13, further radial restriction is applied to reject central stars with higher photometric errors due to central crowding. From each resultant V versus V −I CMD, sixteen and thirteen WD candidates are identified in M13 and M22, respectively. They are identified as stellar objects in the accompanying ACS/WFC images and are found to be randomly distributed across the central regions of M13 and M22. Their positions in the CMDs are in the bright part of the DA WD cooling sequences indicating that they are true WDs. In order to confirm their nature, follow-up spectroscopic observations are needed.

Abstract
1. INTRODUCTION
2. OBSERVATIONAL DATA AND ANALYSIS
3. CMDS AND WD CANDIDATES
4. SUMMARY AND CONCLUSIONS
REFERENCES

• Dong-Hwan Cho(School of Earth System Sciences, College of Natural Sciences, Kyungpook National University) Corresponding author
• Tae Seog Yoon(School of Earth System Sciences, College of Natural Sciences, Kyungpook National University)
• Sang-Gak Lee(Astronomy Program, Department of Physics and Astronomy, College of Natural Sciences, Seoul National University/National Youth Space Center)
• Hyun-Il Sung(School of Earth System Sciences, College of Natural Sciences, Kyungpook National University/Korea Astronomy and Space Science Institute)