Sept. 18, 2008 SLUO 2008 Annual Meeting

Science Opportunities with

LSST

David L. BurkeSLAC/KIPAC

Sept. 18, 2008 SLUO 2008 Annual Meeting

Outline

* Precursor R&D Studies– Systematics Limited Science– Existing Data– Simulation and Modelling

* Observing Campaigns in Support of LSST Science– Photometric calibration studies

* LSST Science Collaborations– LSST Science Book (Edition 2009)

Sept. 18, 2008 SLUO 2008 Annual Meeting

20 minute exposure on 8 m Subaru telescopePoint spread width 0.52 arcsec (FWHM)

1 arcmin (LSST FOV diameter 200 arcmin)

Sept. 18, 2008 SLUO 2008 Annual Meeting

Removal of Asymmetric PSFAnalysis of Stars in 10% LSST FOV

Raw de-trailed PSF corrected

<shear> <shear> = 0.07= 0.07

<shear> <shear> = 0.000013= 0.000013

13 a

rcm

in

(l =

100

0)

<shear> <shear> = 0.04= 0.04

Single exposure in 0.65 arcsec seeing

<shear> <shear> < 0.0001< 0.0001

How does this extrapolate to full LSST FOV?How does this work in dithered multi-epoch survey?How to combine many background-limited images?

Sept. 18, 2008 SLUO 2008 Annual Meeting

A moment to reflect …

Sept. 18, 2008 SLUO 2008 Annual Meeting

It will be a good night …

Sept. 18, 2008 SLUO 2008 Annual Meeting

A New Technique for Measurement of Atmospheric Transmission for SurveysObserving with Tololo 0.9m and 1.5m Telescopes(5 runs 15 nights in 2007 – 2008)

Fit with model SED and computed templates.

Water Vapor

O2

O3

Molecular(Rayleigh)

Demonstrated measurement of atmospheric transmission with sub-% precision.

Sept. 18, 2008 SLUO 2008 Annual Meeting

Access to LSST Data and the LSST Science Collaborations

* All raw data and derived data products will be publicly available as soon as they are generated.

– Data Access Centers (a la′ ATLAS Tier 2 Data Center)

* Data management to support a wide range of queries.

– From a junior high school student looking for images of stars and galaxies, to a large professional science collaboration wanting routine access to the entire data volume.

* The LSST Construction Project is not designed or intended to be the organization that delivers LSST science.

* To secure LSST science, we have formed semi-autonomous LSST Science Collaborations.

Sept. 18, 2008 SLUO 2008 Annual Meeting

LSST Science Collaborations

Sept. 18, 2008 SLUO 2008 Annual Meeting

Roles and Responsibilities of LSST Science Collaborations* Organization and management – spokespersons, membership

decisions, science coordinators, publication policies, speaker boards, etc ...

* Activities and deliverables of Science Collaborations.– Develop and document LSST science analyses.– Provide input to LSST final design and survey strategy.– Develop and participate in precursor studies.

– Deliver first-year commissioning science targets. The present project plan is for “first light” in 2014, and survey and science commissioning in 2015. We expect this to lead to first publications.

* LSST Science Book (2009 Edition)