Transcript HSC workshop on Jan. 19 @ NAOJ

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
Proposed agenda: Wed., Nov. 11
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14:00-14:30 Yasushi Suto:
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14:30-15:00 discussion
15:00-16:00 current plan of 3 surveys
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HSC organization: advisory council , survey design
committee, working group
Summary of discussion on Sept. 25 at University of
Tokyo
Purpose of this meeting
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.
Proposed agenda: Thu., Nov.12
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9:00-12:00 parallel session on how to optimize
the current survey plan
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13:30-15:30 summary of the morning session and
discussion
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Wide survey (chair: Masahiro Takada)
Deep survey (chair: Tomoki Morokuma)
Ultra-deep survey (chair: Masami Ouchi)
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
proposal led by Michael Strauss
Outline of this collaboration meeting
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Establish the HSC organization
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advisory council , survey design committee,
working group
How to proceed
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Summary of discussion on Sept. 25 at The
University of Tokyo
Survey designs
Collaboration policy
Data right
We have to avoid this kind of
fight among HSC collaborators
A possible HSC organization
proposed on Jan. 19, 2009 at NAOJ
N-PAC council
PI
H.Karoji
S.Miyazaki
HSC Survey Design Committee
M.Takada:
weak lens
K.Shimasaku: high-z objects
M.Chiba:
Galactic archeology
J.Gunn:
galaxy evolution
M.Strauss:
everything
Working
group 1
Working
group 2
Working
group 3
Advisers
scientific
D.Spergel, T.Yamada,
N.Yasuda, …
non-scientific
E.Turner, Y.Suto, …
……
HSC collaborators
Working
group N
Today’s proposal (for HSC, not for SUMIRE)
N-PAC council
H.Karoji
S.Miyazaki
PI
Advisory
Council
HSC Survey Design Committee
M.Chiba, J.Gunn,
K.Shimasaku, M.Strauss,
M.Takada, K.Umetsu
Working
group 1
Working
group 2
H.Aihara, P.Ho,
H.Murayama,
D.Spergel, Y.Suto,
E.Turner
Working
group 3
……
HSC collaborators
Working
group N
How to proceed next ?
(Jan. 2009 version)
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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
How to proceed next ?
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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
Summary of discussion on Sept. 25
at The University of Tokyo
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According to the draft of HSC white paper, the
number of requested nights of wide, deep and ultradeep surveys is 600.
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Somehow we have to reduce it by 50% (?)
It is non trivial at al.
Possibilities include
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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.
Purpose of today’s discussion
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The latest number of requested nights for
each survey (wide, deep, and ultra-deep)
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Agreement on the decision making
procedure
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Presentation by each survey group
Discussion today and tomorrow
Final decision; who and how ?
other collaboration issues
Summary of requested nights
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Wide
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Deep
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79 nights (w/o weather factor)
Ultra-deep
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1500 deg2 159 nights (w/o weather factor)
1000 deg2 106 nights
69 nights (w/o weather factor)
Max number of nights: 210 (w/o weather factor)
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Ratio: (159+79+69)/210=307/210=1.46
On average, 210/307=0.68 reduction
Comparison: Nov.11 vs. Nov.12
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Wide
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Deep
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79 nights ⇒ 43 nights
Ultra-deep
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1500 deg2 159 nights ⇒ 1000 deg2 106 nights
69 nights ⇒ 60 nights
Max number of nights: 210 (w/o weather
factor)
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Wide: deep: ultra-deep = 50: 20: 30