Program

Solar SystemExocometsAstrobiologyExoplanet Atm.DisksLab / Astrochemistry

State of the art

Day chair: Inga Kamp

09:00 – 10:00

Arrival, registration with morning coffee

10:00 – 10:15

Welcome by the Lorentz Center

10:15 – 10:30

Opening by organizers: Welcome and explanation of objectives and way of working during the workshop week. (pdf)

10:30 – 11:10

Review of cometary research in the Solar SystemAlan Fitzimmons (pdf)

11:10 – 11:50

Here Today, Gone Tomorrow: A Brief History of ExocometsSharon Montgomery (pdf) (pptx)

11:50 – 12:15

Discussion – Suggested topics could include: What counts as an exocomet? Do we count anything larger than kilometer size bodies in the outer regions of disks/planetary systems, or do we cap them at a certain size to prevent KBO analogs from being included? Must they be eccentric and potentially star-grazing, which would exclude bodies in young, gas-rich disks?

12:15 – 14:00

Lunch @Snellius restaurant

14:00 – 14:30

Cometary emission processes: fingerprints of their physical and chemical behaviorDennis Bodewits (pdf)

14:30 – 15:00

Compositions of exocomets: a disk perspectiveIlse Cleeves (pdf)

15:00 – 15:45

Discussion and brainstorm session – “What are our key questions?”
Suggested questions:
How do we best determine the composition of exocomets?
What publicly available data exist? What sort of observations are lacking?
What organic molecules might we be able to detect with ALMA and what JWST observations would be most beneficial for determining exoplanet composition?
Is there any archival data we could exploit to learn about exocomet composition?

15:45 – 16:00

Coffee / tea

16:00 – 16:30

Explanation and selection of working group session 1.
Each group will focus on question(s) defined above.

20:00 – 22:00

Special Exocomet themed Astronomy on Tap event.

Exploring composition

Day chair: Geraint Jones

09:00 – 9:10

Conclusion/highlights from day 1 by Inga Kamp (pdf)

09:10 – 09:35

The composition of Solar System cometsCyrielle Opitom (pdf)

09:35 – 10:00

Exploring exocomet composition from ground and spaceFlavien Kiefer (pdf)

10:00 – 10:25

The hunt for isotop(ologu)es in exoplanet atmospheresPaul Molliere (pdf)

10:25 – 10:55

Coffee / tea

10:55 – 11:20

Composition of exocomets within extrasolar planetesimal beltsLuca Matrà (pdf)

11:20 – 12:00

Panel discussion with the 8 previous speakers.
Suggested questions: What role do exocomets play in the formation of planetary systems? How is their evolution subsequently impacted by exocomets?
Can we measure the impact of exocomets on planetary atmospheres and if yes, what compositional indicators featured in an exoplanet atmosphere could indicate a significant number of exocometary impacts?
How can we use atmospheric models to check how these atmospheres could be distinguished from e.g. primordial-like atmospheres?

12:00 – 14:00

Lunch @Snellius restaurant

14:00 – 15:30

Working groups chosen yesterday convene for working group session 1.

15:30 – 16:00

Coffee / tea

16:00 – 17:15

Reports from working groups with discussion

17:15 – 18:00

Flash presentations of posters (1 slide/2 min per presenter)

18:00 – 20:00

Wine & cheese party @common room, poster session

The impact of comets on planetary atmospheres and life

Day chair: Nader Haghighipour

09:00 – 09:10

Conclusion/highlights from day 2 by Geraint Jones (pdf)

09:10 – 09:35

Polluted White Dwarfs and Compositions of Extrasolar Minor PlanetsSiyi Xu (pdf)

09:35 – 10:00

The effect of exocomet impacts on exoplanetary atmospheresHilke Schlichting

10:00 – 10:25

Impact-Induced Chemistry on Exoplanets Paul Rimmer

10:25 – 10:30

Examples of working group projects by the SOC

10:30 – 11:00

Coffee / tea

11:00 – 11:30

Panel discussion with speakers from this morning
Suggested questions: What timescales and abundances are possible for late water delivery to exoplanets which may have undergone extreme water loss during the pre-mainsequence phase of M dwarfs? Are we able to detect complex molecules which may have originated from exocomets? Which ones?

11:30 – 12:00

Defining working group goals & outcomes

12:00 – 14:00

Lunch @Snellius restaurant

14:00 – 14:15

Division into groups

14:15 – 16:45

Working group Session 2

16:45 – 17:10

Updates from workgroups.

17:15

Departure by bus (from the Lorentz center) to the workshop dinner at Zijldijk 30, Leiderdorp. Don’t be late! If you miss the bus, you miss the boat.

17:45 – 21:45

Boat tour on Kaager Lakes with a buffet dinner.

21:45 – 22:15

Departure by bus to the Van der Valk Hotel, Lorentz Center and Central Station Leiden.

Way forward

Day chair: Herma Cuppen

10:00 – 12:00

Workgroup session 2 convene. Hilke Slichting is giving a colloquium titled: “Atmospheric accretion and loss during planet formation” at 11am (ground floor)

12:00 – 14:00

Lunch @Snellius restaurant

14:15 – 14:25

Conclusion/highlights from day 3 by Nader Haghighipour

14:25 – 14:45

Exocomet research with ESA space telescopes (inc. JWST)Melissa-McClure

14:45 – 15:10

Detecting Biosignature and Pre-Biosignature Gases with Computational ChemistryClara Sousa-Silva (pdf)

15:10 – 18:00

Workgroup session 2 convene.

Presentations

Day chair: Clara Sousa-Silva

09:00 – 09:10

Conclusion/highlights from day 4 by Herma Cuppen.

09:10 – 09:35

The future of (Solar System) cometary scienceStefanie Milam (pdf)

9:35 – 10:00

The place of comets in the grand scheme of astrobiologyNader Haghighipour

10:00 – 10:20

Panel discussion with the four previous speakers.

10:20 – 10:50

Coffee / tea

10:50 – 11:30

Final presentations by each of the groups from workgroups session 2.

11:30 – 11:45

Discussion

12:00 – 14:00

Imposter Syndrome Workshop in Gorlaeus building Room EM 109. Find Sarah Rugheimer.

Lunch @Snellius restaurant

End of workshop.