the apollo years webb, a human, a vision his legacy...
TRANSCRIPT
James Webb Webinar I
● Introduction● Childhood● Early career● The Apollo years● Webb, a human, a vision● His legacy
James Webb Webinar I
● JWST - a HST/Spitzer mutant on steroids
● Call for proposals● Instruments and Jdox● Live demo APT/ETC● Last word
This presentation is available here: jwst.astro.umontreal.ca, click on the Webinars tab
Who is James Webb?
● James Edwin Webb (1906-1992).● 2nd NASA Administrator from '61 to '68.● Ensured NASA had a focus on science.
○ Mariner missions to Mars and Venus.○ Orbiting Solar Observatory program.○ Explorers program science satellites.○ More than 75 space science missions.
● Envisioned a space telescope as a major NASA effort in 1965.
NIRSpec
MIRI
NIRCam
FGS/NIRISS
NIRISS Instrument:P.I. René DoyonCo-P.I. Chris Willott (NRC-HAA)
Presenters today: ● Loïc Albert● Neil Cook (APT demo)● Geert Jan Talens (ETC demo)
Four Science Instruments
The Telescope
United with the Spacecraft
25 m２
4.5 m２
0.6 m２
JWST compared with HST and Spitzer
Four instruments in the focal plane
JWST offers 17 observing modes (0.6-28 microns)
Science themes of JWST
● Guaranteed Time Observations (GTO) ~4000 h over Cycles 1-3 - >100 science programs
● Early Release Science (ERS) ~450 h - 13 science programs● http://www.stsci.edu/jwst/observing-programs
JWST Deep Fields
Hubble XDFWFC3 - F160W - 65 h
Expected JWSTNIRCam - F356M - 2 h
Expected JWSTNIRCam - GrismR + F356M - 2 h
©E. Egami
Exoplanet atmosphere spectroscopy
©N. CrouzetWASP-79, 4 transits, one for each instrument mode
Spectroscopy of Europa Plumes
©S. Milam/G. Villanueva
GTO and ERS programs of particular interest
● Ferruit. 83 h. NIRSpec IFU on 15 high redshift galaxies and QSO.
● Lafreniere. 200 h. NIRISS exoplanet atmosphere spectroscopy.● Eisenstein. 500 h. Combined on GOODS-N and GOODS-S with
3 instruments.● Henning. 112h. Survey of ~50 young stars. MIRI spectro to study
chemistry of disks.● And so many more...
Call for Proposals
● Deadline May 1● 6 months of Commissioning● The deadline will hold in the event of a Launch delay
https://jwst-docs.stsci.edu/jwst-opportunities-and-policies/jwst-call-for-proposals-for-cycle-1
Call for Proposals
● Deadline May 1● ~35% of time is used by GTO/ERS in Cycle 1
(http://www.stsci.edu/jwst/observing-programs/)● 4+4 pages long, submitted through the Astronomer Proposal Tool (APT)● Streamline proposal (phase 1 + 2 at submission)● We recommend to start at least 6 weeks before deadline● CSA funding at about the same level as NASA (to be announced)● Double-blind review
https://jwst-docs.stsci.edu/jwst-opportunities-and-policies/jwst-call-for-proposals-for-cycle-1
Begin by mid-March
LATEST!!!!!!
Worked example● Target visibility tools:
○ General target visibility tool (GTVT)○ Coronagraphic visibility tool (CVT)○ JWST Background tool (JBT)
● Our example:○ G 139-21 (A star)○ flux calibration○ Want a spectrum (1 - 5 ㎛) with
SNR=100 at 5㎛ ○ Fake magnitude: Johnson J = 15 (Vega) ○ To be observed in September 2021
● Setup:○ Instrument: NIRSpec ○ Mode: Fixed Slit Spectroscopy○ Target Acquisition: None○ Slit: S200A1○ Subarray: SUBS200A1○ Dithers: None○ Grating: PRISM/CLEAR○ Readout Pattern: NRS RAPID○ Special Requirements:
■ Observe September 2021
Astronomer Proposal Tool (APT)
http://www.stsci.edu/scientific-community/software/astronomers-proposal-tool-apt
Current version: 2020.1.1
Submission version: 2020.2 (release March 5th)
Back toAstronomer Proposal Tool
(APT)http://www.stsci.edu/scientific-community/software/astronomers-proposal-tool-apt
Upcoming Workshops/Webinars in Canada● This webinar will be posted on Youtube (NIRISSInstrumentTeam user)● January 30-31, University of British Columbia● March 12th, University of Western Ontario● March 18th, Université de Montréal● April 14th, Q/A webinar● April 22nd, Q/A webinar
Take-home messages● Begin by mid-March LATEST!!!!!!● JDox is your friend● APT has the final say● Use JWST Help Desk or email us!● Come to one of our workshops● Begin by mid-March LATEST!!!!!!
[email protected] presentation is available here: jwst.astro.umontreal.ca, click on the Webinars tab