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July 21, 2010 KIAA, PKU

NAOC and Steward Observatory of UA The South Galactic Cap U-band Sky Survey . Zhou FAN (NAOC). July 21, 2010 KIAA, PKU. Scientific Goals. Supplying the input catalogue for LAMOST ( Guo Shoujing );

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July 21, 2010 KIAA, PKU

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  1. NAOC and Steward Observatory of UA The South Galactic Cap U-band Sky Survey Zhou FAN (NAOC) July 21, 2010 KIAA, PKU

  2. Scientific Goals • Supplying the input catalogue for LAMOST (GuoShoujing); • Classifications of the stars, galaxies, AGN and quasars in the south Galactic cap region with the color-color diagram; • Detecting the red shift z<3 quasar candidates combining the photometry in other bands; • Improving the accuracy of measuring the red shift of the galaxies with PhotoZ combining the photometry in other bands; • Searching for the starburst galaxies candidates; • Estimating the metallicity of the stellar populations in the galaxies; • Identifying the type of the stars in the color-color diagram combining the photometry in other bands, which can help us the control the completeness of the star type for the LAMOST observations; • For the flux calibration of the LAMOST spectra.

  3. Color-color Diagram 图1：SDSS测光中的恒星（×），星系（△）和类星体（其中红移z< 3.5的源用□表示，红移z≥ 3.5的源用■表示）的双色图。 图2：不同类型的恒星在双色图上的位置是不同的

  4. Age Estimation • 图1：BC03模型中太阳金属丰度下星族的谱能量分布随年龄的变化。

  5. Project Members PI: Xu Zhou(NAOC) PI: Michael Lesser (SO/UA) Yipeng Jing(SHAO) Zhaoji Jiang(NAOC/PKU) Xuebin Wu(PKU) Weipeng Lin(SHAO) ShiyinShen(SHAO) Zhou Fan(NAOC) ZhenyuWu(NAOC) ……. Edward Olszewski(UA) Xiaohui Fan(UA)

  6. The 90-inch Bok Telescope • Organization: Steward Observatory. • Location: Kitt Peak, Arizona, USA • Wavelength: optical, infrared • Diameter: 2.3m (90 inches)

  7. Location―Kitt Peak • Altitude: 6,900 ft (2071 m) • Latitude: +31° 57' 46.5“ • Longitude: 111°36' 01.6"W • Time Zone: +7 hours

  8. The Telescope The Bok 90 inch (2.3 meter) Reflector Telescope

  9. Flat fielding

  10. Telescope Control Room

  11. New CCD Mosaic: ITL of UA

  12. CCD configuration NAOC has spent $365,000 for the new CCD Mosaic according to the contract.

  13. The 3×3 Pointing one field of view= 1.028 deg^2 Uncovered squre= 0.001 deg^2 0.141% 1 time cover= 0.116 deg^2 11.288% 2 time cover= 0.911 deg^2 88.571%

  14. The Telescope Moving Speed in RA N1= 28 N2= 30 V_RA(+)= 6.50402451 SEC/DEG V_RA(-)= 7.75749779 SEC/DEG

  15. The Telescope Moving Speed in DEC N1= 30 N2= 30 V_DEC(+)= 12.63 SEC/DEG V_DEC(-)= 12.56 SEC/DEG

  16. The weather statistics of Bok

  17. The seeing distributions of Bok

  18. Total Observation Time • We have 55 nights, then Exp Time of Each Field=(55 nights ×10 hours / nights ×65% useful night )/ 3700deg^2=5.80 min/deg^2

  19. Bok 300 s Comparison of Bok 300s exposure and SDSS in u band SDSS 53 s

  20. Bok 300s: 1.5 mag deeper than SDSS Limiting Mag (S/N=10)= 21.91 — Limiting Mag (S/N=10)= 20.48 = 1.43 magLimiting Mag (S/N= 5)= 22.68 — Limiting Mag (S/N= 5)= 21.09 = 1.59 mag

  21. Bok 300s: 1.5 mag deeper than SDSS Limiting Mag (S/N=10)= 21.91 — Limiting Mag (S/N=10)= 20.39 = 1.52 magLimiting Mag (S/N= 5)= 22.68 — Limiting Mag (S/N= 5)= 21.24 = 1.44 mag

  22. The u-band Sky MAP Sep-Dec of 2010-2012

  23. Survey Priority 6 dark nights / month from Sep to Dec

  24. The Pan-Andromeda Archaeological Survey(PAndAS) PI: Alan McConnachie PAndAS is an astronomical survey using the Canada-France-Hawaii Telescope, which will obtain g andiimaging of over 300 sq. degrees of the M31/M33 sub-group.

  25. M31-M33 galactic interaction (gray nights)

  26. Galactic Anti-center Survey (gray nights) Xuyi Schmidt telescope PI: Xiaowei Liu Bands: g r i

  27. Flux calibration with SDSSIII

  28. Color Term Examination

  29. Size FOV Pixel Scale BQE(~400nm)‏ RON New E2V 4K × 4K 93’×93’ 12 μm/pixel 1.3"/pixel 92.2% <4e Old Thick 2K × 2K 58’×58’ 15 μm/pixel 1.7"/pixel <5% >12e Flux Calibration: BATC 60/90 cm Schmidt Telescope

  30. Data Reduction • cp edo_a1413.0053.fits edo.fit ! for simple • coord8 edo ! turn map, coordination, produce uedo.fit • badlineuedo ! bad line corrected • -------------------------------------------------------------------------------- • sex uedo.fit ! produce test.cat 1538 • chbercoouedo ! produce uedo.coo, delete edge 10 line 1271 • pip231 uedo 1245 • coo2als uedo ! putcoouedo coo2als.dat, will delete it 4 • checkmisuedo ! produce miss.dat, all missed are cosmos 26 • getcosmosuedo ! from uedo.als <-10, produce cosmos.dat, 107 • ! reorder uedo.coo, count in coo2als.dat 1164 • pip231 uedo 1163 • coo2als uedo ! 0 • checkmisuedo ! 108 • getcosmosuedo ! cosmos.dat 109 • ! uedo.coo 1162 • pip231 uedo ! 1162 • -------------------------------------------------------------------------------- • putcoouedo cosmos.dat ! produce uedocosmos.fit • putcoouedo uedo.als ! produce uedoals.fit • ds9 uedocosmos.fit • ds9 uedoals.fit uedo.fits • dispsfberuedo 5 • -------------------------------------------------------------------------------- • extrcatuedo ! extract ..from test.cat & uedo.als, prod uedo.ext • lastcatuedo [1.0] ! [1.0] is sharpness Catalogues

  31. Photometry Comparisons

  32. Thanks!Welcome to visit us: http://batc.bao.ac.cn/Uband/

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