DDT Programs

• Cycle 4

  PID	Title	PI	Instruments	Allocated Hours
  12700	The first NIRSpec observations of a relativistic tidal disruption event candidate	Robert Eyles-Ferris	NIRSpec	1.9
  12656	Rocky Worlds DDT: JWST Observations of TOI-771 b	Nestor Espinoza	MIRI	28.5
  12628	Simultaneous Confirmation and Spectral Characterization of a Giant Planet in Alpha Centauri A's Habitable Zone	Aniket Sanghi	MIRI	4.4
  12602	A z = 0.0343 Gold Rush: A Spectroscopic Infrared Study of SN 2026gzf	Huei Sears	NIRSpec MIRI	6.9
  12591	MIRI and NIRCam imaging of star forming pillar	Macarena Garcia Marin	NIRCam MIRI	14.1
  12580	DDT: Catching an FU Ori Outburst Near Inception	Lynne Hillenbrand	MIRI	2.9
  12574	From photosphere to nebula: the time evolution of a gravitationally lensed, hydrogen-poor superluminous supernova at z ~ 2	Maggie Li	NIRSpec	8.7
  12569	Are LFBOTs Dusty? Constraining the Nature of IR Emission in the Luminous Fast Blue Optical Transient AT2026dbl	Natalie LeBaron	NIRCam MIRI	5.2
  12518	Confirmation of a new outer planet orbiting beta Pictoris A	Aidan Gibbs	NIRSpec MIRI	12.9
  12510	From photosphere to nebula: the time evolution of a gravitationally lensed, hydrogen-poor superluminous supernova at z ~ 2	Maggie Li	NIRSpec	4.8
  12509	Evaluating a Distantly Bright Kreutz Sungrazer	Qicheng Zhang	NIRCam MIRI	6.9
  12507	A Panoramic View of Rapid Dust Production by Disintegrating Asteroids around a White Dwarf	Siyi Xu	NIRSpec MIRI	15.9
  12503	Constraining the Hubble Constant with Nebular-Phase Spectroscopy of a 20x Magnified, Multiply Imaged Supernova	Justin Pierel	NIRSpec	7.1
  12499	Confirming a Possible Escapee from the Outer Main Belt	Qicheng Zhang	NIRSpec MIRI	5.5
  12498	Rocky Worlds DDT: JWST Observations of LHS 1140 b	Nestor Espinoza	MIRI	30.0
  12496	NIRcam and MIRI observations of a radio galaxy	Macarena Garcia Marin	NIRCam MIRI	50.5
  12494	Characterizing a Luminous Red Nova in Real Time	Keiichi Maeda	NIRSpec MIRI	5.9
  12493	Through a Circumstellar Disk, Darkly, with JWST	Eric Gaidos	NIRSpec MIRI	6.1
  12492	Confirming an 8th planet in the TRAPPIST-1 system	Eric Agol	NIRSpec	22.7
  12491	NIRCam and MIRI observations of a young stellar cluster	Macarena Garcia Marin	NIRCam MIRI	14.3
  12490	The Afterlife of SN 2024pxl: JWST Late-Time Spectroscopy of a Surviving White Dwarf	Lindsey Kwok	MIRI NIRSpec	5.9
  12488	Testing the volatile variability of fragmenting Oort cloud comet C/2025 K1 ATLAS	Bryce Bolin	NIRSpec NIRCam MIRI	21.1
  12487	CEE it happen: Common-Envelope Evolution in action with early JWST observations of a stellar merger in M31	Viraj Karambelkar	MIRI	3.2
  12486	DDT: Catching an FU Ori Outburst Near Inception	Lynne Hillenbrand	MIRI	5.8
  12485	Multiwavelength JWST and HST observations of the off-nuclear TDE AT 2025abcr	Kishore Patra	NIRSpec MIRI	9.1
  12481	Capturing Planetesimal Chemistry from Fragmenting Oort Cloud Comet C/2025 K1 (ATLAS)	John Noonan	NIRSpec NIRCam	9.9
  12470	The first James Webb Space Telescope Observations of an early-time, nearby tidal disruption event	Jean Somalwar	NIRSpec MIRI	5.2
  12468	The First Near-Infrared Nebular Spectrum of a Pair-Instability Supernova	Daichi Hiramatsu	NIRSpec	4.6
  9548	NIRCam and MIRI observations of a double-shell planetary nebula	Macarena Garcia Marin	NIRCam MIRI	4.1
  9547	NIRCam and MIRI observations of a barred galaxy	Macarena Garcia Marin	NIRCam MIRI	8.7
  9546	NIRCam observations of embedded protostar	Macarena Garcia Marin	NIRCam	4.7
  9512	First Shift at an Elusive Dust Factory: Early dust and molecule formation in a giant star merger	Viraj Karambelkar	NIRSpec MIRI	4.9
  9493	SN Eos: A Multiply-Imaged, 30x Magnified SN Near the Epoch of Reionization	David Coulter	NIRCam NIRSpec	10.1
  9492	From Rags to Calcium-riches: Using JWST to Constrain Progenitor Identity and Dust Formation in the Calcium-strong Transient 2025coe	Wynn Jacobson-Galan	NIRSpec MIRI	6.0
  9482	Time-Critical Follow-Up of Newly Discovered Uranian Moon with JWST/NIRCam	Maryame El Moutamid	NIRCam	5.9
  9481	Characterizing an onging outburst of a rare centaur C/2023 RS61 with joint JWST and HST observations	Eva Lilly	NIRSpec	5.5
  9478	SN Ares: A Strongly Lensed, High-z CCSN with Remarkable Time Delays	Conor Larison	NIRSpec NIRCam	3.5
  9453	Timely Follow-up of Newly Discovered Methane Fluorescence on Makemake to Investigate Its Origin and Variability	Silvia Protopapa	NIRSpec	11.4
  9448	An accretion burst in a planetary mass objects: DDT observations of Cha1107-7626	Aleks Scholz	NIRSpec MIRI	9.7
  9447	GRB 250702B/D/E Burning Red: A GRB or TDE?	Huei Sears	NIRCam	6.3
  9443	CIGMA (Crystals, Ice, and Gas Molecules under Accretion): How Bursts Transform the Circumstellar Disk WL17	Jeong-Eun Lee	NIRSpec MIRI	3.8
  9442	MIRI MRS Observations of the Third Interstellar Object	Matthew Belyakov	MIRI	9.2
  9441	Enabling early decision making for a possible lunar impact in 2032	Andrew Rivkin	NIRCam	14.4
  9438	Certum: Multiband Webb Images in the Inner Galaxy for the Roman Galactic Plane Survey	Eddie Schlafly	NIRCam	30.0
  9436	The Night of Several Transits: Probing Stellar Behavior and Planetary Diversity in K2-384	Vigneshwaran Krishnamurthy	NIRSpec	15.3
  9433	Black hole primacy - do supermassive black holes really predate galaxies?	Roberto Maiolino	NIRSpec	5.4
  9431	First Images of our Young Jupiter Neighbor	Jorge Llop-Sayson	NIRCam	8.7
  9259	The evolving activity drivers in a newly discovered distant comet	Colin Snodgrass	NIRSpec	3.1
  9258	SN 2024aecx: A Gateway to Understanding Massive Star Deaths, Cosmic Dust, and Binary Systems	Melissa Shahbandeh	NIRSpec MIRI	14.5

• Cycle 3

  PID	Title	PI	Instruments	Allocated Hours
  9381	Unveiling the Nature of a Bright, Long-Duration Transient Discovered in Four-Epoch JWST Observations Over Two Years	Feige Wang	NIRSpec	4.1
  9372	A Luminous, Red Transient at z = 3: An Extreme Test Bed for Supernova Evolution	Estefania Padilla Gonzalez	NIRSpec NIRCam	8.0
  9356	HZTDE-1: The Highest-Redshift TDE Candidate, Revealing the Origins of Supermassive Black Holes	Mitchell Karmen	NIRSpec	9.5
  9331	A Deep Search for a Counterpart to the Nearby FRB 20250316A	Peter Blanchard	NIRCam	4.2
  9327	Confirmation of a direct-collapse supermassive black hole	Pieter van Dokkum	NIRSpec	2.8
  9296	A supernova at z=7.3	Andrew Levan	NIRCam	8.7
  9252	Confirming a Planet Orbiting Our Closest Solar Twin	Charles Beichman	MIRI	45.5
  9251	Probing Pre-Existing Dust in SN 2024xuo with JWST: Insights into Massive Star Evolution	Marco Gomez-Munoz	MIRI	3.3
  9249	JWST observations of the off-nuclear TDE AT 2024tvd	Kishore Patra	NIRSpec NIRCam	6.1
  9245	The unprecedented appearance and future evolution of silicate emission in the disk of T Cha	Agnes Kospal	MIRI	4.8
  9239	Size Measurements of a Potential Earth-Impacting Asteroid with JWST MIRI and NIRCAM	Andrew Rivkin	MIRI NIRCam	11.2
  9235	Rocky Worlds DDT: JWST Observations of GJ 3929 b	Nestor Espinoza	MIRI	75.0
  9234	Rocky Worlds DDT: JWST Observations of LTT 1445 A c	Nestor Espinoza	MIRI	33.0
  9233	SN 2024aecx: A Gateway to Understanding Massive Star Deaths, Cosmic Dust, and Binary Systems	Melissa Shahbandeh	MIRI NIRSpec	18.2
  9232	MIRI imaging observations of planetary nebula section	Macarena Garcia Marin	MIRI	2.2
  9231	SN 2024vjm, Probing Evolution, Molecule, and Dust Formation in the nearest Type Iax Supernova	Eddie Baron	NIRSpec MIRI	9.0
  9230	The Aftermath of a Transient Deposition Event on Europa	Samantha Trumbo	NIRSpec	13.2
  9228	Investigating the Origin of High Redshift Short GRB 241105A and Its Implications for GRB Classification and r-Process Enrichment	Dimple Dimple	NIRCam	5.4
  9224	MIRI and NIRCam observations of a planetary nebula	Macarena Garcia Marin	MIRI NIRCam	6.4
  9223	Let there be Light: Directly Witnessing the Birth of Metal-Free, Pop III Stars in an Ultra-Faint Galaxy at z=6.5	Seiji Fujimoto	NIRSpec	38.7
  9219	NIRCam Observations of a Solar System Object	Macarena Garcia Marin	NIRCam	3.8
  6838	Boom and Dust: Near- and Mid-IR Observations of the Nearest Type Icn Supernova Dust Factor	Kyle Davis	MIRI NIRSpec	7.5
  6811	So Close, Yet So Faint: NIR+MIR Spectroscopy of the Nearest SN Iax 2024vjm	Lindsey Kwok	MIRI NIRSpec	13.4
  6809	Observing the birth of a black hole in M31	Kishalay De	MIRI NIRSpec	9.6
  6803	NIR+MIR Spectroscopy of the Nearby Broad Line Type Ic SN 2024abup: r-process, Dust and Explosion Physics	Manisha Shrestha	MIRI NIRSpec	2.9
  6801	Completing the control field observations of GO-1905	Mario Guarcello	NIRCam	1.5
  6797	Confirming the presence of a gas giant planet orbiting a nearby solar-type star	Charles Beichman	MIRI	48.8
  6785	NIRCam observations of a protestellar envelope and jet	Macarena Garcia Marin	NIRCam	4.4
  6783	NIRCam observations of a star forming nebula and young cluster	Macarena Garcia Marin	NIRCam	5.4
  6780	A Deep Look at Quaoar's Ring System	Benjamin Proudfoot	NIRCam	3.7
  6779	Pushing Boundaries: Unveiling the Most Distant Fast Radio Burst with JWST	Manisha Caleb	NIRCam NIRSpec	12.7
  6778	NIRCam observations of a star forming nebula	Macarena Garcia Marin	NIRCam	7.0
  6777	Finding Black Holes through Gravitational Microlensing	Jessica Lu	NIRCam	4.1
  6742	The evolving activity drivers in a newly discovered distant comet	Colin Snodgrass	NIRSpec	4.0
  6716	Observing Molecule and Dust Formation in the Nearby SN 2024ggi	Chris Ashall	NIRSpec	4.4

• Cycle 2

  PID	Title	PI	Instruments	Allocated Hours
  6714	The evolving activity drivers in a newly discovered distant comet	Colin Snodgrass	NIRSpec	5.7
  6678	A crucial piece of the puzzle: completing the panchromatic view of a nearby young SN with JWST observations	Rubina Kotak	MIRI	6.6
  6677	Observing Molecule and Dust Formation in the Nearby SN 2024ggi	Chris Ashall	MIRI NIRSpec	1.9
  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
  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
  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
  6585	The High-z Menagerie: A Rare Chance to Study the Early and Exotic Transient Universe	David Coulter	NIRCam NIRSpec	9.2
  6565	Narrow and broadband imaging of an edge on galaxy	Macarena Garcia Marin	MIRI NIRCam	19.2
  6564	Imaging of Interacting Galaxies	Macarena Garcia Marin	MIRI NIRCam	17.5
  6558	Multi-band imaging of protostellar jet	Macarena Garcia Marin	MIRI NIRCam	7.4
  6557	Imaging dust knots in a planetary nebula	Macarena Garcia Marin	NIRCam	7.7
  6556	Dust distribution in a colliding galaxy system	Macarena Garcia Marin	MIRI NIRCam	13.9
  6555	Star-formation in a nearby galaxy	Macarena Garcia Marin	MIRI NIRCam	7.5
  6554	Infrared imaging of bipolar features in planetary nebula	Macarena Garcia Marin	MIRI NIRCam	8.6
  6553	MIRI imaging of merger-driven features in galaxy pair	Macarena Garcia Marin	MIRI	11.0
  6550	When worlds collide: formation and evolution of a synestia	Richelle van Capelleveen	MIRI NIRSpec	8.6
  6549	Lensed Supernova Encore at z=2! The First Galaxy to Host Two Multiply-Imaged Supernovae	Justin Pierel	NIRCam	7.3
  6543	Stellar Activity Characterization of LHS 1140 - Is LHS 1140 b a Mini-Neptune or a Water World?	Charles Cadieux	NIRISS	15.8
  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
  4621	Time-sensitive observations of Chiron: a unique active Centaur beyond 15 AU	Ian Wong	NIRSpec	4.0
  4575	Dust Our Luck – Measuring Molecule and Dust Formation in M101’s Hydrogen-rich SN 2023ixf	Chris Ashall	MIRI NIRSpec	4.4
  4558	Establishing the Formation of AF Lep b with NIRCam: The Lowest-Mass Imaged Exoplanet with a Dynamical Mass	Kyle Franson	NIRCam	6.5
  4557	JWST/NIRSpec confirmation of z~3 transients found by JWST/NIRCam	Haojing Yan	NIRSpec	10.8
  4554	Revealing the progenitor of the dirty fireball gamma-ray burst AT 2023lcr through its supernova component	Antonio Martin-Carrillo	NIRCam NIRSpec	4.7
  4520	Near- and Mid-IR Observations to Probe Dust Formation in the Remarkably Nearby Stripped-Envelope Supernova 2023dbc	Melissa Shahbandeh	MIRI NIRSpec	6.8

• Cycle 1

  PID	Title	PI	Instruments	Allocated Hours
  4522	Dust Our Luck – Measuring Molecule and Dust Formation in M101’s Hydrogen-rich SN 2023ixf	Chris Ashall	MIRI NIRSpec	3.5
  4446	SN H0pe: Independent Measurement of H0 by the Time Delay of a Multiply-imaged Supernova	Brenda Frye	NIRCam NIRSpec	10.5
  4445	Revealing the nature of the exceptional GRB 230307A: nearby nucleosynthesis or a primordial explosion?	Andrew Levan	NIRCam NIRSpec	4.9
  4436	Near- and Mid-IR Observations to Probe Dust Formation in the Remarkably Nearby Stripped-Envelope Supernova 2023dbc	Melissa Shahbandeh	MIRI NIRSpec	1.8
  4434	The late time spectrum of a kilonova in the exceptionally bright GRB 230307A	Andrew Levan	NIRCam NIRSpec	4.9
  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
  4426	An unprecedented spatially resolved analysis of the brightest galaxy at z>10 in GOODS-N	Roberto Maiolino	NIRSpec	17.7
  2787	A sensitive search for rings and small moons in the Martian system using JWST	Geronimo Villanueva	NIRCam	5.7
  2784	Late Time Observations of GRB 221009A: The First Search for r-Process Nucleosynthesis in a Collapsar	Peter Blanchard	NIRCam NIRSpec	11.2
  2783	MIRI LRS follow up on SO2 detection in WASP-39b	Diana Powell	MIRI	10.7
  2782	Heavy element formation in the brightest gamma-ray burst of all time	Andrew Levan	MIRI NIRSpec	2.2
  2767	Imaging and Spectroscopy of Three Highly Magnified Images of a Supernova at z=1.5	Patrick Kelly	NIRCam NIRSpec	10.3
  2756	Imaging and Spectroscopic Follow-up of a Supernova at Redshift z=3.47	Wenlei Chen	NIRCam NIRSpec	9.4
  2754	Unique Constraints on Early Dust Growth in Core-Collapse Supernovae	Justin Pierel	MIRI	5.6
  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
  2747	The Volatile Content of Oort Cloud Comet C/2014 UN271	Bryce Bolin	NIRSpec	4.4
  2739	JWST Cycle 1 Outreach Campaign	Klaus Pontoppidan	MIRI NIRCam	45.4