1. 2010 June 21-22The 2 nd Maidanak User’s Meeting (UBAI, Tashkent, Uzbekistan) Overview of Korean Activities at Maidanak Myungshin Im (Seoul National University)

2. 2010 June 21-22The 2 nd Maidanak User’s Meeting (UBAI, Tashkent, Uzbekistan) Background 1997: Collaboration talk started when Prof. Shuhrat Ehgamberdiev visited Korea to discuss collaboration 2003.8: Prof. Sang-Gak Lee, Hyung Mok Lee, and Changbom Park, Hwankyung Sung visited Maidanak observatory. Memorandum of Understanding (MOU) was signed to provide 2 months/year access to 1.5m 2004 Summer: Dr. Mansur Ibrahimov, Abbas Aliev, et al. Visited Korea

3. 2010 June 21-22The 2 nd Maidanak User’s Meeting (UBAI, Tashkent, Uzbekistan) Key MOU Items Annual contribution to the operating cost 2 Month per year access to 1.5m Provide a new observation equipment by 2005 Consideration for a new telescope at Maidanak

4. 2010 June 21-22The 2 nd Maidanak User’s Meeting (UBAI, Tashkent, Uzbekistan) Activities 2009 Summer: The 1 st Maidanak User’s Meeting was held at Seoul National University 2006 August: Installation of SNUCAM (Seoul National University 4k x 4k CCD Camera) at 1.5m 2006 Fall: Scientific observations with SNUCAM began

5. 2010 June 21-22The 2 nd Maidanak User’s Meeting (UBAI, Tashkent, Uzbekistan) Spectral Instrument 4k x 4k CCD Camera (SNUCAM) Fairchild 4k x 4k, Back Illuminated CCD chip Cryogenic cooling (–108 C) 5 position 4-inch filter wheel Bessell UBVRI filters + H-alpha + SDSS ugriz (ARCSEC + KIAS) + Y + new filters 18’ x 18’ field of view Scientific publications with SNUCAM : Please cite Im et al. (2010, JKAS, 43, 77)

6. 2010 June 21-22The 2 nd Maidanak User’s Meeting (UBAI, Tashkent, Uzbekistan) Successful Installation of SNU4kCAM (2006. 8) M15 M31

7. 2010 June 21-22The 2 nd Maidanak User’s Meeting (UBAI, Tashkent, Uzbekistan) Limiting magnitude (1 hr, 5-sigma, Vega or AB) August 30, 20072009 Seeing (arcsec) U…23.91.0 B25.026.31.0 R24.525.80.9 I22.623.90.8 Z…22.7 AB1.0 Y…21.3 AB1.0 SDSS: u ~ 22.4, g ~ 22.6, r ~ 22.6, I ~ 21.7, z ~ 20.9 mag (50% complete; Abazajian et al. 2004)

8. 2010 June 21-22The 2 nd Maidanak User’s Meeting (UBAI, Tashkent, Uzbekistan) Scientific Programs Standard star campaign (Sung, H. + Lim, B.) Open cluster observations (Sung, H., Lee, S. G. ) Exoplanet transit observations (Lee, S. G. + Kang, W., Yang, Y.) Globular cluster observations (Lee, H. M.) Extragalactic programs (Im, M. + Jeon, Y., Choi, C., Lee, I., Cho, Y., Ko, J., Kim, D., Hong, J.)

9. 2010 June 21-22The 2 nd Maidanak User’s Meeting (UBAI, Tashkent, Uzbekistan) Observation Campaigns 2006. 8 (J. Ko, Y. Cho, M. Im) – Installation of SNU4kCAM + test observation of extragalactic field + M31 Microlensing 2006. 10 (C. Choi & Y. Cho) – Deep z-band observation of high redshift quasar candidates + Supernovae follow-up observation 2007. 6 (I. Lee, Y. Jeon, M. Im) – BRI imaging of AKARI NEP-Wide Survey field + Optical imaging of SNUQSO quasars 2008. 8 (C. Choi, Y. Jeon, M. Im) – Re-installation of SNU4kCAM + Y-band imaging of extragalactic fields 2009. GRB observations, Deep Imaging of SNUQSO quasars and high redshift quasar candidates 2010.

10. 2010 June 21-22The 2 nd Maidanak User’s Meeting (UBAI, Tashkent, Uzbekistan) Programs for 2010 Merging signature in Early-type galaxies and Type-1 quasars  physical mechanism? The i s - and iz-band observations of z ~ 5.5 quasar candidates Environment of supermassive black holes with M ~ 10 10 M ⊙

11. 2010 June 21-22The 2 nd Maidanak User’s Meeting (UBAI, Tashkent, Uzbekistan) Merging Signatures 73% of early-type galaxies (Tomer et al. 2009) Early-type galaxies with optical-NIR color gradients (Ko & Im 2005; Duho Kim) Host galaxies of luminous Quasars (Jueun Hong) : z < 0.15, M B < -22 (Tomer et al. 2009)

12. 2010 June 21-22The 2 nd Maidanak User’s Meeting (UBAI, Tashkent, Uzbekistan) Binary QSO at z=0.111 (SNUQSO 2319+4032; Lee, Im, et al. 2010) Digitized Sky Survey Image 110” 27.3”

13. 2010 June 21-22The 2 nd Maidanak User’s Meeting (UBAI, Tashkent, Uzbekistan) Binary QSO at z=0.111 Maidanak 1.5m/SNUCAM (4 hrs)

14. 2010 June 21-22The 2 nd Maidanak User’s Meeting (UBAI, Tashkent, Uzbekistan) Binary QSO at z=0.111 Maidanak 1.5m/SNUCAM (4 hrs)

15. 2010 June 21-22The 2 nd Maidanak User’s Meeting (UBAI, Tashkent, Uzbekistan) Binary QSO at z=0.111 Maidanak 1.5m/SNUCAM (4 hrs) 2009 September 20-22 Tidal Feature

16. 2010 June 21-22The 2 nd Maidanak User’s Meeting (UBAI, Tashkent, Uzbekistan) No BH with 10 10 M ⊙ at z ~ 6 But, BH with 10 10 M ⊙ at z ~ 5 BH with 10 10 M ⊙ are emerging at z ~ 5.5  Critical Era for understanding SMBH growth But, very few z ~ 5.5 QSOs are known Shen et al. (2007) ? Im et al. (2010) AKARISDSS Quasars at z ~ 5.5

17. 2010 June 21-22The 2 nd Maidanak User’s Meeting (UBAI, Tashkent, Uzbekistan) Not many QSOs at z ~ 5.5 so far Because r-drop out technique cannot be applied to z ~ 5.5 QSOs Too much stellar contamination Chiu, K. et al. (2006)

18. 2010 June 21-22The 2 nd Maidanak User’s Meeting (UBAI, Tashkent, Uzbekistan) New Filters – i s (i short ) and iz is Y z=5.5z=6.5z=7.0 iz

19. 2010 June 21-22The 2 nd Maidanak User’s Meeting (UBAI, Tashkent, Uzbekistan) Expected number Over 4000 deg 2 (UKIDSS LAS area), z_AB < 20 mag, 30 quasars at 5.2 < z < 5.8 90 quasars at 4.7 < z < 5.2

20. 2010 June 21-22The 2 nd Maidanak User’s Meeting (UBAI, Tashkent, Uzbekistan) Publications (2007 ~) SCI publications: 6 SCIE publications: 2 (JKAS) Others: 1 (PKAS) Master’s thesis: 2 Conference presentations: ~20 GCN Circulars: a few

21. 2010 June 21-22The 2 nd Maidanak User’s Meeting (UBAI, Tashkent, Uzbekistan) Desired improvements Internet access Efficient data transfer method Stable power supply Regular cleaning/coating of the mirror Efficient communication Infrastructure improvements (building, etc)

22. 2010 June 21-22The 2 nd Maidanak User’s Meeting (UBAI, Tashkent, Uzbekistan) Concluding Remarks SNUCAM on the Maidanak 1.5m is a powerful imaging tool Unique filters Improvement of the facility  more use by Korean astronomers

23. 2010 June 21-22The 2 nd Maidanak User’s Meeting (UBAI, Tashkent, Uzbekistan) Thank you