Director's Discretionary Time Observations

Director’s Discretionary Time (DDT) can be requested for time-critical observations that cannot plausibly be scheduled for the regular proposal cycle. These types of proposals might be appropriate for the follow-up of newly-discovered unexpected transient phenomena or when developments since the last proposal cycle make a time-critical observation necessary. They are also appropriate for timely follow-up of new discoveries that will provide a critical link in the understanding of the phenomena.

To view details about a specific program, click the Program ID. 

PID Title PI Instruments Allocated Hours Cycle
6742 The evolving activity drivers in a newly discovered distant comet Colin Snodgrass NIRSpec 4.5 2
6716 Observing Molecule and Dust Formation in the Nearby SN 2024ggi Chris Ashall NIRSpec 4.4 2
6714 The evolving activity drivers in a newly discovered distant comet Colin Snodgrass NIRSpec 5.7 2
6678 A crucial piece of the puzzle: completing the panchromatic view of a nearby young SN with JWST observations Rubina Kotak MIRI 6.5 2
6677 Observing Molecule and Dust Formation in the Nearby SN 2024ggi Chris Ashall MIRI
NIRSpec
1.9 2
6659 Dust to Dust: Probing the Survival of Cold Dust, New Hot Dust Formation, and Mass-Loss History of the Nearest Type Ibn Supernova Kirsty Taggart MIRI 6.3 2
6595 Giant in the Infant Universe: Identification of A Record-breaking Strongly-lensed (Ancestor of) Extremely Massive Quiescent Galaxy Mingyang Zhuang MIRI
NIRSpec
5.0 2
6591 Cracking the Cosmic Calcium Conundrum: Discovering the origin of Ca-rich transient SN 2024uj with late-time infrared spectroscopy Lindsey Kwok MIRI
NIRSpec
8.0 2
6585 The High-z Menagerie: A Rare Chance to Study the Early and Exotic Transient Universe David Coulter NIRCam
NIRSpec
9.2 2
6565 Narrow and broadband imaging of an edge on galaxy Macarena Garcia Marin MIRI
NIRCam
19.2 2
6564 Imaging of Interacting Galaxies Macarena Garcia Marin MIRI
NIRCam
17.5 2
6558 Multi-band imaging of protostellar jet Macarena Garcia Marin MIRI
NIRCam
5.9 2
6557 Imaging dust knots in a planetary nebula Macarena Garcia Marin NIRCam 7.7 2
6556 Dust distribution in a colliding galaxy system Macarena Garcia Marin MIRI
NIRCam
13.9 2
6555 Star-formation in a nearby galaxy Macarena Garcia Marin MIRI
NIRCam
7.5 2
6554 Infrared imaging of bipolar features in planetary nebula Macarena Garcia Marin MIRI
NIRCam
8.6 2
6553 MIRI imaging of merger-driven features in galaxy pair Macarena Garcia Marin MIRI 11.0 2
6550 When worlds collide: formation and evolution of a synestia Richelle van Capelleveen MIRI
NIRSpec
8.6 2
6549 Lensed Supernova Encore at z=2! The First Galaxy to Host Two Multiply-Imaged Supernovae Justin Pierel NIRCam 7.3 2
6543 Stellar Activity Characterization of LHS 1140 - Is LHS 1140 b a Mini-Neptune or a Water World? Charles Cadieux NIRISS 15.8 2
6541 JWST NIRSpec/NIRCam Follow-Up of the High-Redshift Transients Discovered in the GOODS-S JADES-Deep Field Eiichi Egami NIRCam
NIRSpec
17.7 2
4621 Time-sensitive observations of Chiron: a unique active Centaur beyond 15 AU Ian Wong NIRSpec 4.0 2
4575 Dust Our Luck – Measuring Molecule and Dust Formation in M101’s Hydrogen-rich SN 2023ixf Chris Ashall MIRI
NIRSpec
4.4 2
4558 Establishing the Formation of AF Lep b with NIRCam: The Lowest-Mass Imaged Exoplanet with a Dynamical Mass Kyle Franson NIRCam 6.5 2
4557 JWST/NIRSpec confirmation of z~3 transients found by JWST/NIRCam Haojing Yan NIRSpec 10.8 2
4554 Revealing the progenitor of the dirty fireball gamma-ray burst AT 2023lcr through its supernova component Antonio Martin-Carrillo NIRCam
NIRSpec
4.7 2
4520 Near- and Mid-IR Observations to Probe Dust Formation in the Remarkably Nearby Stripped-Envelope Supernova 2023dbc Melissa Shahbandeh MIRI
NIRSpec
6.8 2
4522 Dust Our Luck – Measuring Molecule and Dust Formation in M101’s Hydrogen-rich SN 2023ixf Chris Ashall MIRI
NIRSpec
3.5 1
4446 SN H0pe: Independent Measurement of H0 by the Time Delay of a Multiply-imaged Supernova Brenda Frye NIRCam
NIRSpec
10.5 1
4445 Revealing the nature of the exceptional GRB 230307A: nearby nucleosynthesis or a primordial explosion? Andrew Levan NIRCam
NIRSpec
4.9 1
4436 Near- and Mid-IR Observations to Probe Dust Formation in the Remarkably Nearby Stripped-Envelope Supernova 2023dbc Melissa Shahbandeh MIRI
NIRSpec
1.8 1

4434

The late time spectrum of a kilonova in the exceptionally bright GRB 230307A Andrew Levan NIRCam
NIRSpec
4.9 1

4427

The impact of smaller accretion bursts on the planet-forming material in the disk of a young eruptive star Peter Abraham MIRI 2.2 1
4426 An unprecedented spatially resolved analysis of the brightest galaxy at z>10 in GOODS-N Roberto Maiolino NIRSpec 17.7 1
2787 A sensitive search for rings and small moons in the Martian system using JWST Geronimo Villanueva NIRCam 5.7 1
2784 Late Time Observations of GRB 221009A: The First Search for r-Process Nucleosynthesis in a Collapsar Peter Blanchard NIRCam
NIRSpec
11.2 1
2783 MIRI LRS follow up on SO2 detection in WASP-39b Diana Powell MIRI 10.7 1
2782

Heavy element formation in the brightest gamma-ray burst of all time

Andrew Levan

MIRI

NIRSpec

2.2 1
2767 Imaging and Spectroscopy of Three Highly Magnified Images of a Supernova at z=1.5 Patrick Kelly NIRCam
NIRSpec
10.3 1
2756 Imaging and Spectroscopic Follow-up of a Supernova at Redshift z=3.47 Wenlei Chen NIRCam
NIRSpec

9.4

1
2754 Unique Constraints on Early Dust Growth in Core-Collapse Supernovae Justin Pierel MIRI 5.6 1
2750

Spectroscopic follow-up of ultra-high-z candidates in CEERS: Characterizing true z > 12 galaxies and z~4-7 interlopers in preparation for JWST Cycle 2

Pablo Arrabal Haro NIRSpec 8.0 1

2747

The Volatile Content of Oort Cloud Comet C/2014 UN271 Bryce Bolin NIRSpec

4.4

1

2739

JWST Cycle 1 Outreach Campaign

Klaus Pontoppidan

MIRI

NIRCam

45.4

1

 

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