The James Webb Space Telescope

Ryan M. Lau JAXA International Top Young Fellow, ISAS

2019 GOPIRA Symposium
Sept 24, 2019

M. Ressler (JPL), N. Izumi (Ibaraki U), C. Yasui (NAOJ), I. Sakon (U Tokyo),
T. Onaka (Meisei U), H. Inami (Hiroshima U), S. Baba (NAOJ), I. Endo (U Tokyo)

Talk Outline• Overview of the James Webb Space Telescope• Science Timeline and Cycle 1 Details• Tokyo JWST Cycle 1 Proposal Workshop– March 9 – 10, 2020 @ University of Tokyo, Hongo Campus• JWST Science from Japan
Ryan Lau - ryanlau@ir.isas.jaxa.jp2The James Webb Space Telescope
Cryogenic temperature (< 50 K)
telescope and instruments passively
cooled by 5-layer sunshield(MIRI actively cooled to 6.7 K)

Deployable IR telescope w/ 6-m
diameter segmented primary mirror

Will be the most sensitive infraredobservatoryRyan
between1 – 28 μm
Lau - ryanlau@ir.isas.jaxa.jp

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JWST Instrumentation

Ryan Lau - ryanlau@ir.isas.jaxa.jp

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The James Webb Space Telescope

Launch Date - March 30, 2021
(80% Confidence level)

Ryan Lau - ryanlau@ir.isas.jaxa.jp

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Science Planning TimelineToday(Sept 2019)

Ryan Lau - ryanlau@ir.isas.jaxa.jp

6Cycle 1 Proposal Details• Cycle 1 GO Proposal Info
– Anticipate ~1500 proposals
submitted and ~300 proposals(~20%) accepted– Includes joint HST/JWST proposals– Open to all nationalities/affiliations– Dual anonymous review• Proposal Categories– Small (<25 hr)– Medium ( 25 < t < 75 hr)– Large (> 75 hr)– Archival or Theory research– Science more important than time!

Aug 2019: JWST assembled for the
first time (Credit: NASA/Chris Gunn)
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Cycle 1 Proposal Preparation
Many proposers would have been
scrambling for April 2018 deadline…
… start preparations early for May
2020 deadline!
Core Tools
Astronomer’s Proposal Tool (APT – apt.stsci.edu)
Exposure Time Calculator (ETC – jwstetc.stsci.edu)
SupportJWST User Documentation (Jdox), JWST Help Desk8

https://sites.google.com/view/tokyojwstworkshop/

Tokyo JWST Proposal Workshop
March 9 – 10, 2020 @ U. Tokyo, Hongo Campus• Purpose: Train participants to use
proposal tools and stimulate
proposal ideas for upcoming Cycle
1 Deadline (May 1, 2020)• Lead instructors H. Inami(Hiroshima U.) & S. Baba (NAOJ)
to attend JWST Master Class• We encourage exploring the tools
and thinking about ideas now

Fukutake Hall, U. Tokyo

Ryan Lau - ryanlau@ir.isas.jaxa.jp

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https://sites.google.com/view/tokyojwstworkshop/

Please go to link and sign up for mailing list if you areinterested in participating!

Ryan Lau - ryanlau@ir.isas.jaxa.jp

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JWST Science in Japan
Star Formation in
Extreme ISM
Environments(GTO – M.
Ressler/JPL)

Radiative Feedback
on ISM from Youngstars (ERS)ISM Enrichmentfrom Dying stars(ERS)

Starburst-AGN
Connection in Galaxy
Mergers (ERS)

PI: N. Izumi (Ibaraki U) PI: O. Berne (IRAP)

PI: R. Lau (ISAS/JAXA) PI: L. Armus (IPAC)

C. Yasui, R. Lau, M.
Saito, N. Kobayashi

T. Wada, I. Sakon, I.
Endo

T. Onaka

H. Inami11https://sites.google.com/view/tokyojwstworkshop/

Summary and Key Dates• JWST less than two years away!
– Jan 23, 2020 -> Cycle 1 Proposal Call
– Mar 9 – 10, 2020 -> Tokyo JWST Workshop– May 1, 2020 -> Cycle 1 Deadline– Mar 30, 2021 -> JWST Launch• Become familiar with core tools (APT, ETC)
early (now!)• Domestic Researchers engaged in Cy1 Programs
Ryan Lau - ryanlau@ir.isas.jaxa.jp

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