Workshop Schedule

Nota bene: The schedule includes ample time for discussions, the subjects of which will be determined by vote during the workshop.

Review talks are 20+5 min and contributed talks are 12+3 min. Talk abstracts are available here.

Day 1

Monday, September 9, 2024

Coffee and pastries 8:30 - 9:00

8:50 - 9:00

Introductory Remarks

Julien de Wit & Benjamin Rackham

9:00 - 9:25

[Review] The SPOTLESS project: Physical modeling of stellar activity effects to discover and measure exoearths

Ignasi Ribas

9:25 - 9:40

Isolating stellar activity from Doppler shifts: A novel approach to CCF decomposition and radial velocity correction

Jordi Blanco-Pozo

9:40 - 9:55

Mitigating stellar activity to characterise exoplanet atmospheres

Oscar Porqueras Leon

Coffee Break 9:55 - 10:25

10:25 - 10:40

Impact of stellar activity on the high-resolution cross-correlation spectroscopy of exoplanet atmospheres

Vatsal Panwar

10:40 - 10:55

Hide and seek with spots and planets

Samson Mercier

10:55 - 11:10

Impacts of stellar inhomogeneities on high-resolution cross-correlation spectroscopy

Annabella Meech

11:10 - 12:00

Discussion

Lunch/Discussion 12:00 - 1:00

1:00 - 1:25

[Review] Understanding magnetic features on stellar surfaces

Alexander Shapiro

1:25 - 1:40

Effect of stellar magnetism on limb darkening and transmission spectra

Nadiia Kostogryz

1:40 - 1:55

Sensitivity of spectral lines to solar granulation

Sowmya Krishnamurthy

1:55 - 2:10

SPHINX II: Other degeneracies that mimic starspots

Aishwarya Iyer

2:10 - 2:25

Advances in flare modeling and mitigation for transmission spectroscopy observations of the TRAPPIST-1 system

Ward Howard

2:25 - 2:40

Characterizing the atmosphere of TRAPPIST-1 e in the face of stellar contamination

Natalie Allen

Coffee Break 2:40 - 3:10

3:10 - 5:00

Discussion

Day 2

Tuesday, September 10, 2024

9:00 - 9:05

Morning announcements

Julien de Wit & Benjamin Rackham

9:05 - 9:30

[Review] Developing a Community-Endorsed EPRV Data Standard

Jennifer Burt

9:30 - 9:45

The Extreme Stellar Signals Project

Lily Zhao

Coffee Break 9:45 - 10:15

10:15 - 10:30

Betelgeuse's RV Variability

Morgan MacLeod

10:30 - 10:45

eurydice: A New Software Package for Evaluating Gaussian Process Models of Stellar Activity Signals

Kaylee Barrera

10:45 - 11:00

Using Machine Learning and our CALM Linear Regression Method to Model Stellar Contamination in RV Searches

Zoë de Beurs

11:00 - 11:15

AESTRA: Deep Learning for Precise Radial Velocity Estimation in the Presence of Stellar Activity

Yan Liang

11:15 - 11:30

A Gaussian process model for stellar activity in 2-D line profile time-series

Haochuan Yu

11:30 - 11:45

Learning from the machine: synthetic gap and complex scheduling

Guillem Anglada-Escudé

Lunch/Discussion 11:45 - 1:30

1:30 - 1:45

Rotation and magnetic properties of nearby M dwarfs

Elisabeth Newton

1:45 - 2:00

Fully Convective M Dwarfs: Variability in Magnetically Sensitive Balmer Emission Lines

Aylin Garcia Soto

2:00 - 2:15

Spots and transmission contamination in the AU Mic system

Will Waalkes

2:15 - 2:30

REVEALing stellar contamination of exoplanet spectra: towards a JWST M-dwarf variability catalog

Lucas Ellerbroek

Coffee Break 2:30 - 3:00

3:00 - 5:00

Discussion

3:50 - 5:00

[optional] Colloquium talk from Jim Fuller

Where: Marlar Lounge, Building 37

Title: Cosmic Death Spirals

Abstract: Stars, planets, and compact objects orbiting with small separations are some of the most interesting and important systems in astrophysics. In short-period binary stars, the tidal distortion of the star can greatly affect stellar pulsations. I will show that tidally distorted stars become “tri-axial” pulsators, causing pulsation amplitude modulation that may allow for a new type of asteroseismic analysis. In other cases, the stellar pulsations indicate that some stars in close binaries rotate extremely slowly, demonstrating such stars are trapped in an unusual spin-orbit equilibrium known as a Cassini state. In short-period exoplanet systems, resonances between stellar oscillations and the planet’s orbit can be sustained by a resonance locking process, driving inward migration of the planet until it is consumed. Finally, white dwarfs in short-period binaries provide a novel opportunity to measure the orbital decay that occurs during the common-envelope phase leading to their formation, providing new insights into the formation of gravitational wave sources.

Day 3

Wednesday, September 11, 2024

9:00 - 10:00

Open time for collaboration meetings

Coffee Break 10:00 - 10:29

10:29 - 10:30

Group photo

Session Chair: Aishwarya Iyer

10:30 - 10:55

[Review] Deciphering Atmospheric Heterogeneity in Ultracool Atmospheres: Results and Lessons Learned

Dániel Apai

10:55 - 11:10

Illuminating Brown Dwarfs: Exploring the Impact of Irradiation in Ultracool Atmospheres Through Phase-Resolved Spectroscopy

Rachael Amaro

11:10 - 11:25

Towards robust corrections for stellar contamination using HST & JWST

Benjamin Rackham

11:25 - 11:40

Empirically Constraining the Spectra of Stellar Surface Features Using Time-resolved Spectroscopy

David Berardo

11:40 - 12:00

A roadmap for the atmospheric characterization of terrestrial exoplanets with JWST

Julien de Wit

Lunch/Discussion 12:00 - 1:30

1:30 - 3:00

Discussion (JWST Cycle 4 Proposals)

Coffee Break 3:00 - 3:30

3:30 - 5:00

Discussion (JWST Cycle 4 Proposals)

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