January 9, 2023


Hybrid; Seattle Convention Center - Room 304;
›› view map

Chair: David Ardila

About this Meeting

AAS241 splinter session - Date: Monday, January 9, 2023
Time: 9:00 AM - 11:30 AM PT

This splinter session will focus on ground-based, community-led activities seeking to discover and characterize exoplanets, sponsored by both NASA and the NSF. The objective of this session is to present a breadth of results and possibilities to encourage community use of resources made available via the NASA & NSF Exoplanet Observational Research (NN-EXPLORE) program, NASA open time, and NSF instrument funding.

We will present updates and recent results from several cutting-edge Radial Velocity (RV) spectrometers (NEID at WIYN; MAROON-X at Gemini North; and the EXtreme PREcision Spectrometer - EXPRES - at LDT) and report on the status of the Keck Planet Finder (KPF) spectrograph that is currently being commissioned at Keck Observatory. Updates on US access to southern hemisphere RV science via SMARTS/CHIRON and MINERVA-Australis will also be provided.

In addition, this session will discuss recent results from the NESSI, 'Alopeke, and Zorro speckle cameras. These high-resolution speckle imagers have been instrumental in the host-star characterization carried out in advance of spectroscopic follow up.

Finally, the PIs of the ROSES 2020 call on Extreme Precision Radial Velocity (EPRV) Foundational science will present highlights from their results. The studies funded by this call seek to determine whether stellar variability can be understood well enough to mitigate the limitations it places on RV mass measurements – working towards the goal of detecting and measuring masses for temperate Earth-mass exoplanets orbiting Sun-like stars.


JANUARY 9, 2023

Time (PT) Title Speaker
9:00 am The NN-EXPLORE Program David R. Ardila, NASA Exoplanet Program Office
9:08 am High Resolution Speckle Imaging Steve Howell, NASA Ames Research Center
Instrument Status and Recent Results
9:16 am NEID Jason Wright, Penn State
9:24 am MAROON-X Andreas Seifahrt, University of Chicago
9:32 am EXPRES Joe Llama, Lowell Observatory
9:40 am SMARTS/Chiron Todd Henry, RECONS Institute
9:48 am MINERVA-Australis Rob Wittenmyer, University of Southern Queensland
9:56 am Keck Planet Finder Samuel Halverson, Jet Propulsion Laboratory
Extreme Precision Radial Velocity
10:04 am NASA's EPRV program Jennifer Burt, Jet Propulsion Laboratory
10:12 am NEID Sun-As-A-Star Observations for Evaluating Stellar Variability Mitigation Strategies Jason Wright, Penn State on behalf of Eric Ford, Penn State
10:25 am Disentangling Stellar and Planetary Signatures with Interferometric Images and Extreme Precision Radial Velocities Rachael Roettenbacher, University of Michigan
10:38 am Advances in 3D Realistic Modeling of Solar-type Stars to Study Stellar Jitter and Photospheric and Subsurface Dynamics Irina Kitiashvili, NASA Ames Research Center