RCN Colloquia

RCN Colloquia

RCN Colloquia are generally scheduled for the 4th (sometimes 5th) Thursday of the month at 8a Pacific Time. If the speaker agrees, recordings are posted to our YouTube Channel and cross-posted to this page after the fact for those unable to join in real time.

Winter/Spring 2026 EPRV Colloquium Schedule

January 29, 2026: Sharon Wang [Tshingua University]
February 26, 2026: “A Day/Night in the life of an EPRV Instrument” Panel Discussion
March 26, 2026: Momo Ellwarth [Lowell University]
April 23, 2026: Jessi Cisewski-Kehe [University of Wisconsin-Madison]
May 28, 2026: Nuno Santos [University of Porto]
June 25, 2026: Sowmya Krishnamurthy [University of Graz]

Use this Google Form to nominate a speaker for a future EPRV colloquium!

For a list of all previous RCN Colloquia speakers and topics, click here.

Recordings of Past RCN Colloquia

Chasing stellar noise with PoET: lessons from the first month of observations

Presenter: Nuno Santos [University of Porto]

Date: May 2026

Back to the basics: using statistical linear models to clean radial velocities for exoplanet detection

Presenter: Jessi Cisewski-Kehe [University of Wisconsin-Madison]

Date: April 2026

Magnetic Activity Diagnostics with LOST using the He I D3 Line

Presenter: Momo Ellwarth [Lowell Observatory]

Date: March 2026

Search and Characterize Earth-like Planets with Chorus

Presenter: Sharon Wang [Tsinghua University]

Date: January 2026

Know thy star: an introduction to stellar spectroscopy in the context of EPRV

Presenter: Cis Lagae [University of Warwick]

Date: November 2025

Wavelength Calibration of EPRV Spectrographs

Presenter: Francesco Pepe [University of Geneva]

Date: October 2025

NIRPS, lessons learnt and path forward in Infrared PRV

Presenters: Étienne Artigau & Neil Cook [University of Montreal]

Date: September 2025

Red Jewels: the Challenges and Rewards of EPRV Studies of M dwarfs

Presenter: Paul Robertson [UC Irvine]

Date: August 2025

A homogenous analysis of small planet masses

Presenter: Hannah Osborne [UCL]

Date: May 2025 Part II

gaspery: Optimized Scheduling of Radial Velocity Follow-Up Observations for Active Host Stars

Presenter: Chris Lam [University of Florida]

Date: May 2025 Part I

Granulation: Study on a Quiet K-Dwarf HD 166620

Presenter: Ancy Anna John [University of Birmingham]

Date: April 2025

Status of HARPS3 and the Terra Hunting Experiment

Presenter: Samantha Thompson [University of Cambridge

Date: March 2025

Modeling stellar activity in the wavelength domain: data-driven and physically-motivated approaches

Presenter: Baptiste Klein [University of Oxford]

Date: February 2025

Forward Modeling Telluric Absorption with a Variable Line Spread Function using NEID and HPF

Presenter: Danny Krolikowski [University of Arizona]

Date: September 2024

BANZAI-NRES: A modular pipeline framework to measure radial velocities

Presenter: Curtis McCully [Las Cumbres Observatory]

Date: August 2024

Exploring planetary system architecture with Gaia astrometry and (EP)RVs

Presenter: Jean-Baptiste Delisle [University of Geneva]

Date: May 2024

Line-by-line radial velocities for the Sun-as-a-star

Presenter: Drake Deming [University of Maryland at College Park]

Date: April 2024

Exploring the impact of stellar variability on high resolution spectroscopy through observations and simulations

Presenter: Heather Cegla [University of Warwick]

Date: February 2024

Views on how to reach the 10 cm/s precision level in RV

Presenter: Xavier Dumusque [University of Geneva]

Date: January 2024

Detector Characterization in the era of EPRV

Presenters: Joe Tufts [Semiconductor Technology Associates, Inc.] & Ashley Baker [CalTech]

Date: November 2023

Stellar Variability in Isolation: Characterizing Resolved Stellar Signals in EPRV Timeseries

Presenter: Jacob Luhn [UC Irvine]

Date: October 2023

Physically motivated stellar activity mitigation

Presenter: Jared Siegel [Princeton University]

Date: September 2023

Asteroseismology in the era of EPRV instruments

Presenter: Dan Huber [University of Hawaii / University of Sydney]

Date: August 2023

Solar Heterodyne Spectroscopy with Frequency Combs

Presenter: Connor Fredrick [NIST & CU Boulder]

Date: June 2023

Data-Driven Methods for Achieving Extreme Precision Radial Velocities

Presenter: Megan Bedell [Center for Computational Astrophysics, Flatiron Institute]

Date: May 2023

Data-Driven Modeling of Telluric Features and Stellar Variability with StellarSpectraObservationFitting.jl

Presenter: Christian Gilbertson [Penn State University]

Date: April 2023

Effects of Magnetic Intensification on Stellar RVs

Presenter: Steve Saar [CfA / SAO]

Date: February 2023

Statistical methods for radial velocity data analysis

Presenter: Nathan Hara [University of Geneva]

Date: December 2022

Observing the Sun to learn about the stars

Presenter: Annelies Mortier [University of Birmingham]

Date: October 2022

Impact of stellar variability on future Earth-like planets detectability

Presenter: Nadege Meunier [Institut de planétologie et d'astrophysique de Grenoble]

Date: September 2022

Line-by-line RVs: A promising solution to the EPRV

Presenter: Michaël Cretignier [University of Geneva]

Date: August 2022

Instrumental Challenges in the EPRV Era -- the Path Towards 10 cm/s

Presenter: Sam Halverson [JPL]

Date: July 2022

Towards nearby Exo-Earths by way of Young Neptunes: Data-drived stellar activity models for radial velocity planet searches

Presenter: Suzanne Aigrain [Oxford University]

Date: June 2022

The EXPRES Stellar Signals Project: Establishing the State of the Field in Disentangling Photospheric Velocities

Presenter: Lily Zhao [Center for Computational Astrophysics]

Date: May 2022