General introduction: HSC collaboration meeting at Princeton
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General introduction:HSC collaboration meeting at
Princeton
Yasushi Suto Department of Physics, The University of Tokyo
(Global Scholar, Dept. of Astrophys. Sci., Princeton Univ.)
HSC collaboration meeting @Princeton, Nov. 11 & 12, 2009
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Proposed agenda: Wed., Nov. 11
14:00-14:30 Yasushi Suto: HSC organization: advisory council , survey design commi
ttee, working group Summary of discussion on Sept. 25 at University of Toky
o Purpose of this meeting
14:30-15:00 discussion 15:00-16:00 current plan of 3 surveys
10 min presentations by chairs of each survey + 10 min discussion
16:00-16:30 coffee 16:30-18:00 discussion led by Masahiro Takada
on collaboration policy, etc.
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Proposed agenda: Thu., Nov.12
9:00-12:00 parallel session on how to optimize the current survey plan Wide survey (chair: Masahiro Takada) Deep survey (chair: Tomoki Morokuma) Ultra-deep survey (chair: Masami Ouchi)
13:30-15:30 summary of the morning session and discussion 13:30-14:10 Masahiro Takada: wide-survey 14:10-14:50 Tomoki Morokuma: deep survey 14:50-15:30 Masami Ouchi: ultra-deep survey
15:30-16:00 coffee 16:00-18:00 further discussion toward the proposa
l led by Michael Strauss
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Outline of this collaboration meeting
Establish the HSC organization advisory council , survey design
committee, working group How to proceed
Summary of discussion on Sept. 25 at The University of Tokyo
Survey designs Collaboration policy Data right
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We have to avoid this kind of fight among HSC
collaborators
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A possible HSC organizationproposed on Jan. 19, 2009 at
NAOJ
HSC Survey Design Committee
Working
group 1
Working
group 2
Working
group 3
Working
group N
……
HSC collaborators
PI
Advisers
H.KarojiS.Miyazaki
M.Takada: weak lensK.Shimasaku: high-z objectsM.Chiba: Galactic archeologyJ.Gunn: galaxy evolutionM.Strauss: everything
scientific D.Spergel, T.Yamada, N.Yasuda, …non-scientific E.Turner, Y.Suto, …
N-PAC council
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Today’s proposal (for HSC, not for SUMIRE)
HSC Survey Design Committee
Working
group 1
Working
group 2
Working
group 3
Working
group N
……
HSC collaborators
PI
Advisory
Council
H.KarojiS.Miyazaki
M.Chiba, J.Gunn, K.Shimasaku, M.Strauss, M.Takada, K.Umetsu
H.Aihara, P.Ho, H.Murayama,D.Spergel, Y.Suto, E.Turner
N-PAC council
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How to proceed next ? (Jan. 2009 version)
Aug. 2010: deadline of the Subaru strategic program proposal
Jun. 2010: HSC proposal 1st draft completed and circulated among collaborators
Mar. 2010: Japan-Princeton-Taiwan HSC workshop @ Japan ?
Dec. 2009: draft of HSC survey circulated among collaborators
Nov. 2009: HSC workshop @ Princeton Mar. 2009: 3rd HSC workshop (in Japanese)
@ NAOJ or Univ. of Tokyo
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How to proceed next ?
Dec. 2013: 1st world-top result from HSC as part of SUMIRE project
XXX.2012: start HSC survey Aug. 2011: deadline of the Subaru strategic
program proposal XXX. 2011: HSC proposal 1st draft
completed and circulated among collaborators
XXX.2010: Japan-Princeton-Taiwan HSC workshop @ Japan ?
Nov. 2009: HSC workshop @ Princeton
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Summary of discussion on Sept. 25 at The University of Tokyo
According to the draft of HSC white paper, the number of requested nights of wide, deep and ultra-deep surveys is 600. Somehow we have to reduce it by 50% (?) It is non trivial at al.
Possibilities include Cut each of these surveys by a factor of two. Drop one (or even two !) of the survey plans, and adjust
the number of nights among the rest of the plans Something in-between the above two, by cutting each
of the surveys by a factor depending on the strength of their scientific case. The factors may be adapted after a few years of the survey, depending on its achievements.
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Purpose of today’s discussion
The latest number of requested nights for each survey (wide, deep, and ultra-deep) Presentation by each survey group
Agreement on the decision making procedure Discussion today and tomorrow Final decision; who and how ?
other collaboration issues
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Summary of requested nights
Wide 1500 deg2 159 nights (w/o weather factor) 1000 deg2
106 nights
Deep 79 nights (w/o weather factor)
Ultra-deep 69 nights (w/o weather factor)
Max number of nights: 210 (w/o weather factor) Ratio: (159+79+69)/210=307/210=1.46 On average, 210/307=0.68 reduction
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Comparison: Nov.11 vs. Nov.12
Wide 1500 deg2 159 nights ⇒ 1000 deg2
106 nights
Deep 79 nights ⇒ 43 nights
Ultra-deep 69 nights ⇒ 60 nights
Max number of nights: 210 (w/o weather factor) Wide: deep: ultra-deep = 50: 20: 30