Planets on the Edge

Coordinators: Myriam Benisty, Eric Gaidos, and Ruth Murray-Clay

The Kepler and TESS missions, as well as ground-based telescopes, have discovered thousands of planets on short-period orbits around other stars, including many that are Earth-size and likely to be rocky. These objects have no direct counterparts in the Solar System, and the corresponding inner regions within the protoplanetary disks that spawned them are challenging to study. This conference will confront this challenge and advance our understanding of the nature, formation and evolution of Earth-sized planets in inner protoplanetary disks by bringing together diverse experts in exoplanet demographics, protoplanetary disks, models of disks and planet formation, and meteoritics to address four key questions: (1) what is the nature of close-in rocky planets and their atmospheres? (2) do they form in situ or migrate inwards after forming further out? (3) what are the governing parameters that could vary between star systems? and (4) why are there no analogous planets around the Sun? The conference will complement and energize the associated KITP Program by including a broader range of participants and highlighting recent observational results. The goals of the conference are to synthesize current knowledge of the properties of planets and inner disks, describe the state of the art in models of planet formation and evolution, catalyze interactions between different fields, and chart a path forward for advances in observations, theory, and computational modeling.

2025

Monday, May 05, 2025

  • Chair: Eric Gaidos (Hawaii) 08:50AM Fred Kavli Auditorium (Main)

    Keynotes are 30+15

    Invited are 24+12

    Contributed are 12+6
    • 08:50AM Lars Bildsten (KITP) Welcome
    • 09:00AM Jessie Christiansen (NASA) “The Long, Hot Summer: What Short Period Planets Are Revealing About Planet Formation, Migration, and Evolution”
    • 09:45AM Jaehan Bae (Florida) “Inside the cradle: structure, dynamics, and chemistry of inner protoplanetary disks"
  • 10:30AM MORNING BREAK Gurley Courtyard

     
  • 11:00AM Fred Kavli Auditorium (Main)

     
    • 11:00AM Laura Schaefer (Stanford) “The geochemistry of Volatiles on Hot to Temperate Terrestrial Planets”
    • 11:45AM Poster “flash” introductions
  • 12:30PM LUNCH BREAK Gurley Courtyard

     
  • Chair: Mario Flock (MPI-A) 02:00PM Session 1 Inner disk structure and dynamics Fred Kavli Auditorium (Main)

    Keynotes are 30+15

    Invited are 24+12

    Contributed are 12+6
    • 02:00PM Bonnie Zaire (UFMG) “Unveiling the magnetic structure and dynamics of the star-inner disk interface with spectropolarimetry”
    • 02:36PM Michael Cecil (MPI-A) “Evolution of the inner rim of protoplanetary disks undergoing episodic accretion
    • 02:54PM Agnes Kospal (Konkoly Obs.) “Time-resolved protoplanetary disk physics in bursting young stellar objects”
    • 03:12PM John Monnier (Michigan) “Evidence for strong time-variable asymmetries at the dust destruction front in some Herbig Ae/Be stars”
  • 03:30PM AFTERNOON BREAK Gurley Courtyard

     
  • Chair: Lee Hartmann (Michigan) 04:00PM Session 2 Inner disk structure and dynamics II Fred Kavli Auditorium (Main)

     
    • 04:00PM Can Cui (Univ. of Toronto) “Growth of dust in ring by the streaming and Rossby wave instabilities"
    • 04:36PM József Varga (Konkoly Observatory) () “Zooming into the inner disk with VLTI”
    • 04:54PM Zhaohuan Zhu (UNLV) “3-D MHD simulations of magnetospheric accretion and the birth environment for planets”
    • 05:12PM Stefan Kraus (Exeter) “Infrared interferometric imaging and the prospects for resolving the circumstellar- and circumplanetary accretion geometry”
  • 05:30PM SHUTTLE TO THE BEST WESTERN Gurley Courtyard

     

2025

Monday, May 05, 2025

  • Chair: Eric Gaidos (Hawaii) 08:50AM Fred Kavli Auditorium (Main)

    Keynotes are 30+15

    Invited are 24+12

    Contributed are 12+6
    • 08:50AM Lars Bildsten (KITP) Welcome
    • 09:00AM Jessie Christiansen (NASA) “The Long, Hot Summer: What Short Period Planets Are Revealing About Planet Formation, Migration, and Evolution”
    • 09:45AM Jaehan Bae (Florida) “Inside the cradle: structure, dynamics, and chemistry of inner protoplanetary disks"
  • 10:30AM MORNING BREAK Gurley Courtyard

     
  • 11:00AM Fred Kavli Auditorium (Main)

     
    • 11:00AM Laura Schaefer (Stanford) “The geochemistry of Volatiles on Hot to Temperate Terrestrial Planets”
    • 11:45AM Poster “flash” introductions
  • 12:30PM LUNCH BREAK Gurley Courtyard

     
  • Chair: Mario Flock (MPI-A) 02:00PM Session 1 Inner disk structure and dynamics Fred Kavli Auditorium (Main)

    Keynotes are 30+15

    Invited are 24+12

    Contributed are 12+6
    • 02:00PM Bonnie Zaire (UFMG) “Unveiling the magnetic structure and dynamics of the star-inner disk interface with spectropolarimetry”
    • 02:36PM Michael Cecil (MPI-A) “Evolution of the inner rim of protoplanetary disks undergoing episodic accretion
    • 02:54PM Agnes Kospal (Konkoly Obs.) “Time-resolved protoplanetary disk physics in bursting young stellar objects”
    • 03:12PM John Monnier (Michigan) “Evidence for strong time-variable asymmetries at the dust destruction front in some Herbig Ae/Be stars”
  • 03:30PM AFTERNOON BREAK Gurley Courtyard

     
  • Chair: Lee Hartmann (Michigan) 04:00PM Session 2 Inner disk structure and dynamics II Fred Kavli Auditorium (Main)

     
    • 04:00PM Can Cui (Univ. of Toronto) “Growth of dust in ring by the streaming and Rossby wave instabilities"
    • 04:36PM József Varga (Konkoly Observatory) () “Zooming into the inner disk with VLTI”
    • 04:54PM Zhaohuan Zhu (UNLV) “3-D MHD simulations of magnetospheric accretion and the birth environment for planets”
    • 05:12PM Stefan Kraus (Exeter) “Infrared interferometric imaging and the prospects for resolving the circumstellar- and circumplanetary accretion geometry”
  • 05:30PM SHUTTLE TO THE BEST WESTERN Gurley Courtyard

     

2025

Tuesday, May 06, 2025

  • Chair: Ruth Murray Clay (UC Santa Cruz) 09:00AM Session 3 Inner disk gas and chemistry Fred Kavli Auditorium (Main)

    Keynotes are 30+15

    Invited are 24+12

    Contributed are 12+6
    • 09:00AM Sierra Grant (Carnegie Institution) Exploring the chemical diversity in the planet-forming zones of disks with JWST”
    • 09:36AM Feng Long (Arizona) “The confirmation and characterization of long-lived protoplanetary disks with JWST/MIRI”
    • 09:54AM Péter Ábrahám (Konkoly Obs.) “A multi-epoch and multi-wavelength investigation of the unsteady inner disks in a sample of young stars using VLT, VLTI, IRTF, and JWST”
    • 10:12AM Noura Ibrahim (Michigan) “Imaging the inner AU of Young Stellar Objects"
  • 10:30AM MORNING BREAK Gurley Courtyard

     
  • 11:00AM Poster Session I Fred Kavli Auditorium (Main)

     
  • 12:30PM LUNCH BREAK Gurley Courtyard

     
  • Chair: Eiichiro Kokubo (NAOJ) 02:00PM Session 4 Inner disk dust and the road to planets Fred Kavli Auditorium (Main)

    Keynotes are 30+15

    Invited are 24+12

    Contributed are 12+6
    • 02:00PM Takahiro Ueda (Harvard-Smithsonian CfA) “Planet Formation within the Inner Regions of Thermally Evolving Disks”
    • 02:36PM Marbely Micolta (Michigan) “A multiwavelength view of the dust of the Classical T Tauri Star BP Tau”
    • 02:54PM Charly Carrasco Gonzalez (UNAM) “Unveiling the distribution of pebbles in compact disks”
    • 03:12PM Rixin Li (UCB) “Planet Formation on the Edge: From Dust Retention to Broken Resonant Chains”
  • 03:30PM AFTERNOON BREAK Gurley Courtyard

     
  • 04:00PM Discussion I Lead: Tom Ray (DIAS) Fred Kavli Auditorium (Main)

     
  • 05:30PM RECEPTION Gurley Courtyard

     
  • 06:00PM DINNER Gurley Courtyard

     
  • 07:30PM SHUTTLE TO BEST WESTERN Gurley Courtyard

     

2025

Wednesday, May 07, 2025

  • Chair: Jiayin Dong (Flatiron Institute) 09:00AM Session 5 Close-in planet formation and migration Fred Kavli Auditorium (Main)

    Keynotes are 30+15

    Invited are 24+12

    Contributed are 12+6
    • 09:00AM Eve Lee (UCSD) “Carving the Edges of the Small Planet Population”
    • 09:36AM Timmy Delage (Imperial College) “Formation of planetary cores in spontaneously generated long-lived dust traps during the secular evolution of magnetized protoplanetary disks”
    • 09:54AM Arturo Cevallos Soto (UNLV) “Interplay of Planets with Stellar Magnetospheric Accretion: I. Planet Migration and Stochastic Torque Dynamics”
    • 10:12AM Alexandro Ziampras (Queen Mary Univ.) “Super-Earth migration in radiative, low-viscosity disks”
  • 10:30AM LUNCH BREAK Gurley Courtyard

     
  • 11:00AM Poster Session II Fred Kavli Auditorium (Main)

     
  • 12:30PM LUNCH BREAK Gurley Courtyard

     
  • Chair: Steve Desch (Arizona State) 02:00PM Session 6 Planet formation to extremes Fred Kavli Auditorium (Main)

    Keynotes are 30+15

    Invited are 24+12

    Contributed are 12+6
    • 02:00PM Matt Clement (Carnegie) “Mercury’s mysterious origin”
    • 02:36PM Adolfo Carvalho (Caltech) “The extreme conditions in the inner disks of outbursting YSOs and their impact on planet formation”
    • 02:54PM Andre Izidoro (Rice) “Formation of super-Earths and mini-Neptunes from rings of planetesimals”
    • 03:12PM Shangjia Zhang (Columbia) “Dynamical Effects of Shadows in Transition Disks—Theory, 3D Radiation-Hydrodynamics, and Observational Signatures”
  • 03:30PM AFTERNOON BREAK Gurley Courtyard

     
  • 04:00PM Discussion II Lead: Ted Bergin (Univ. Michigan) Fred Kavli Auditorium (Main)

     
  • 05:30PM RECEPTION Gurley Courtyard

     
  • 06:00PM DINNER Gurley Courtyard

     
  • 07:30PM SHUTTLE TO BEST WESTERN Gurley Courtyard

     

2025

Thursday, May 08, 2025

  • Chair: Jack Lissauer (NASA Ames) 09:00AM Session 7 Close-in planet demographics Fred Kavli Auditorium (Main)

    Keynotes are 30+15

    Invited are 24+12

    Contributed are 12+6
    • 09:00AM Lauren Weiss (Notre Dame) “The Origin of Earth: Lessons from Exoplanets”
    • 09:36AM Fei Dai (Hawaii) “The outcomes of convergent disk migration stalled by the disk inner edge”
    • 09:54AM Steven Giacalone (Caltech) “Small and Close-in Planets are Uncommon Around A-type Stars”
    • 10:12AM Pei Wei Tu (Nanjing Univ.) “Occurrence and Architecture of Ultra-Short-Period Planet Systems Depend on Age”
  • 10:30AM LUNCH BREAK Gurley Courtyard

     
  • Chair: Ji Wang (Ohio State) 11:00AM Session 8 Inner planet composition and atmospheres Fred Kavli Auditorium (Main)

     
    • 11:00AM Anjali Piette (Univ. Birmingham) “Deciphering the compositions of close-in exoplanets with JWST”
    • 11:36AM Mengfei Sun (Nanjing Univ.) “Planetary Edge Trends: The Inner Edge – Stellar Mass Correlation”
    • 11:54AM Vinciane Debaille (ULB) “Formation of large parent bodies in the early solar system”
    • 12:12PM Nick Tusay (Ohio State Univ.) “A Disintegrating Rocky World Shrouded in Dust and Gas: Mid-IR Observations of K2-22b using JWST”
  • 12:30PM LUNCH BREAK Gurley Courtyard

     
  • 02:00PM Discussion III Lead: Sean Raymond (Bordeaux Observatory) Fred Kavli Auditorium (Main)

     
  • 03:30PM Closing remarks Ralph Pudritz (McMaster Univ.) Fred Kavli Auditorium (Main)

     
  • 03:45PM AFTERNOON BREAK Gurley Courtyard

     
  • 04:00PM Early Career Researcher Event / DIY Meetings - Paola Pinilla (UCL) Fred Kavli Auditorium (Main)

     
  • 05:30PM SHUTTLE TO BEST WESTERN-*Also available to SB Airport and SB Airbus, Goleta location. (See Registration Desk BEFORE THURSDAY to sign up.) Gurley Courtyard

    Posters:

    Marcelo Barraza-Alfaro (MIT): “Signatures of multi-scale turbulence in ALMA molecular lines observations of protoplanetary disks”

    Eric Gaidos (University of Hawai’i): “On the diversification and lifetime of protoplanetary disks”

    Man Hoi Lee (Hong Kong University): “Formation of Resonant Chains near the Inner Edge of Protoplanetary Disks”

    Jack Lissauer (NASA Ames): “Architectures of Inner Planetary Systems - Period Ratios Near the Inner Edge of Protoplanetary Disks”

    Ruth Murray-Clay: “The impact of inner disk accretion on giant planet formation lines”

    Bayron Portilla-Revelo (Penn State University): “Protoplanetary Disks in Extreme Irradiation Environments: A JWST View of the NGC 6357 Star-Forming Region”

    Yansong Qian (University of Toronto): “Do small disks harbor substructures?”

    Bennett Skinner (McMaster University): “Signs of Migrating Icy Worlds in the Radius Valley”

    Anibal Sierra (University College London): “High angular resolution evidence of dust traps in LkCa15”

    Ji Wang (Ohio State University): “Classifying and Simulating Exo-Mercuries”

    Mutian Wang (Nanjing University): “The Adolescent TOI-2076 is a Near-Resonant Chain and Almost Completed Photo-Evaporation”

    Morgan Williams (Imperial College London): “Planet Formation in the Inner Disc”

    Lisa Wölfer (MIT): “Characterizing the Gas Dynamics Around Dust Asymmetries”

    Bonnie Zaire (Federal University of Minas Gerais): “SpecpolFlow: A new, Pythonic workflow for spectropolarimetry”

    Luigi Zallio (University ofMilan): “Measuring protoplanetary gas-disk sizes and geometries: general considerations and

    preliminary results from the DECO Large Program”

    Brianna Zawadzki (Wesleyan University): “Characterizing Vertical Dust Structures in Debris Disks with ARKS”

2025

Friday, May 09, 2025

No talks scheduled.

2025

Saturday, May 10, 2025

No talks scheduled.

2025

Sunday, May 11, 2025

No talks scheduled.