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Requests for PFS - as an AGN researcher-

Requests for PFS - as an AGN researcher-. Masa Imanishi. NAOJ/Subaru Telescope. With help from SWANS team. AGN science using PFS ： Spectroscopy of HSC-detected QSOs . ・ z~7 10 （ 1000 deg 2 ) （ candidates = X a few ? ）. Use extra several fibers in other galaxy surveys.

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Requests for PFS - as an AGN researcher-

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  1. Requests for PFS- as an AGN researcher- Masa Imanishi NAOJ/Subaru Telescope With help from SWANS team

  2. AGN science using PFS：Spectroscopy of HSC-detected QSOs ・ z~7 10 （1000 deg2)（candidates = X a few ?） Use extra several fibers in other galaxy surveys but see my remark later ・ z~6 300 （1000 deg2）（candidates = X a few ?） Use extra several fibers in other galaxy surveys ・z=3-5 10-1000（1 deg2）（candidates = X <a few ?） PFS very important

  3. Most distant, bright QSOs Constraints on SMBH formation theory z=25 : 100Mo BH Eddington growth z=6.5 :109 Mo z=7.5 : 108 Mo 1. z~7 QSO science Currently, most distant QSO : z~6.4 Study the physics (including neutral fraction) of more distant IGM with high S/N

  4. HSC z,y filters 8000A g r i z y 10000A Up to z~7.3 QSO High-z = Longer λ Fan+06 8000A 9000A

  5. High-z QSOand brown dwarf (BD) Gradually increase flux Galactic BD wavelength flux Sharp gap High-z QSO wavelength

  6. z~7 QSO g y r z i z-y BD Assumption y-J HSC wide survey (i,z,y) = (20m, 20m, 20m) = (26.0, 24.9, 23.8) AB z~7 QSO (z-dropout,y-detected) z-y>2-2.3 selection（remove BD） In VIKING field (J=22.2)AB, z-y>1.5-1.7, y-J<1 Kashikawa10

  7. z~7 QSO QSO number decreases with high-z QSO number density ∝ 10-0.47(z-6) Willott+10 z=6→7 : ~1/3 Richards+06

  8. Selectable z~7 QSO: 7/1000 deg2 12（VIKING） （conservative） g y r z i HSC/wide（z~7） Jiang+09 Lim-mag: (z,y) = (24.9, 23.8) AB M1450A faint bright z~7 QSO Number of faint QSOs : Smaller than previously expected z~7 QSOs included in y-band : ~35/1000deg2 Selection z-y>1.5

  9. At least cover Lyα : 9000 - 10500A High sensitivity required SMBH mass MOIRCS IGM physics TMT PFS（z~7 QSO） Follow-up spectroscopy of HSC z~7 QSO candidates Several 10s candidates/1000 deg2 Use extra several fibers in other galaxy surveys

  10. 4 5 6 2. z~6 QSO science Many faint z~6 QSO z~6 IGM study in many sightlines (neutral fraction increases?) Fan+06

  11. g y r z i HSC/wide（z~6） Jiang+09 M1450A faint bright 2. z~6 QSO (i-dropout, z-detected) i-z red（>1.8）：by IGM absorption z-y blue（<0.5）：BD removal 350/1000 deg2 （conservative） Selection : i=26.0,z=24.2, y=23.8 (AB)

  12. At least cover Lyα : 8000 – 9000A High sensitivity required z~6 IGM multiple sightlines TMT PFS（z~6 QSO） Follow-up spectroscopy of HSC z~6 QSO candidates 1000 candidates/1000 deg2（1/deg2） Use extra several fibers in other galaxy survey

  13. log MDH/Msun=12.5 7 7 QSO-QSO、QSO-galaxy correlation（bias） tQ=3x108 yr 12.0 6 6 f f e b beff QSO lifetime 5 5 Halo mass tQ=3x107 yr 11.5 4 4 Enoki et al. (2003) 3 3 . 5 4 4 . 5 5 z z 3. z=3-5 QSO science Faint, numerous z=3-5 QSOs LF faint end Origin of ionizing UV background

  14. g y r z i QSO QSO i’ — z’ r’ — i’ g’ — r’ r’ — i’ Richards et al. (2001) 3. z~3-5 QSO (g,r,i-selection) riz : z=4.6-5.1 gri : z=3.6-4.4 i - z r - i g - r r - i

  15. Casey+08 z=3-5.5 100/deg2 PLE LDDE number 18 i=24 PFS（z=3-5 QSO） Follow-up spectroscopy of HSC z=3-5 QSO candidates 10-1000/deg2 PFS very important Cover Lyα,CIV(1549A) 6000 - 9500A LF、two-point spatial correlation: Completely solved with HSC+PFS！

  16. Summary ・ z~7 10 （1000 deg2) (a few times candidates?） 9000-10500A Use extra several fibers in other galaxy surveys High-sensitivity but see my remark later ・ z~6 300 （1000 deg2）（a few times candidates?） 8000-9000A Use extra several fibers in other galaxy surveys High-sensitivity ・z=3-5 10-1000（1 deg2）（<a few times candidates?） 4500-9500A PFS very important

  17. ・ z>6 QSOs : number density too small High sensitivity spectrograph at 9000-10500A better (FOCAS、MOIRCS） PFS operation (personal opinion) ・ Red-optimized (>6000A) PFS is powerful to z=3-5 QSOs Can be done with PFS, if high sensitivity at 9000-10500A ?

  18. Request for PFS operation （case 1） PFS : soon after HSC survey If Subaru open use is dominated by PFS SSP, z>6 QSO spectroscopy will not proceed, and interesting results may be robbed by other telescopes. SSP must be <25％ of Subaru open use

  19. PFS survey （several 100 deg^2）of y-detected, z-undetected (but z-y<1.5) sources may increase the number of z ~7 QSO SSP can be >25％ of Subaru open use Request for PFS operation （case 2） PFS : >3 yr after HSC survey HSC-selectable z~7 QSO : ~10 / 1000deg2 z~7 QSOs included in HSC-y-band : ~35 / 1000deg2

  20. Request for PFS specification High sensitivity at >9000A is an advantage of Subaru (because of Hamamatsu CCD) Powerful to spectroscopy of z>6 QSO In any case, PFS should have high sensitivity at 9000-10500A

  21. End

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