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234th AAS Meeting Event Descriptions

Please note: The workshops and events listed on this page are only those that require or allow registration through the meeting registration form. There may be other workshops and events during the meeting that are not listed here. See the online program (coming soon) for information on all events.

All workshop organizers, moderators, and attendees must be registered for the AAS meeting at which the workshop will take place. Those attending a workshop only and not the rest of the AAS meeting will be charged a one-day registration fee in addition to the individual workshop fee.


Planning for the 2023 and 2024 Solar Eclipses (1½-day workshop)

Saturday, 8 June | 9:30 am − 4:30 pm
Sunday, 9 June | 10:00 am − 3:00 pm
Organizer: Angela Speck, Univ. of Missouri, Columbia
Fee: $15
In August 2017 the continental US experienced its first total solar eclipse (TSE) in a generation. In April 2024, now only five years away, the US will have a second TSE, preceded by an annular solar eclipse (ASE) in October 2023. The AAS Solar Eclipse Task Force ran a series of workshops to prepare the nation for the 2017 TSE. These were instrumental in helping communities in the path of totality manage an influx of visitors; in developing and disseminating appropriate eye-safety information nationwide; and in coordinating the efforts of numerous scientific, educational, governmental, and other organizations to avoid unnecessary overlap. Now is not too early to start planning for the 2023 and 2024 eclipses, taking advantage of lessons learned from the 2017 event. This workshop is aimed at community leaders and other stakeholders both inside the paths of annularity (2023) and/or totality (2024) and outside, for — as in 2017 — the entire Lower 48 states will experience at least a deep partial eclipse. We are particularly keen to welcome participants from Canada and Mexico, as the April 2024 TSE also touches parts of those countries. Attendees are anticipated to include professional and amateur astronomers; formal and informal educators; representatives of tourism bureaus, Chambers of Commerce, and the hospitality industry; and officials from departments of transportation, state- and national-level parks and forests, law-enforcement agencies, and emergency-management organizations. Invited speakers will include event coordinators who experienced the TSE in 2017 and will see darkness again in 2024 (e.g., in SE Missouri and southern Illinois) as well as transportation experts and others who can present studies of the 2017 eclipse and offer recommendations for future events. We will also welcome a limited number of contributed presentations. For more information, see our Solar Eclipse Planning Workshop page.

Inversion of IRIS Mg II h&k Data: A Machine Learning Approach

Monday, 10 June | 3:00 pm - 4:30 pm
Organizer: Alberto Sainz Dalda, Lockheed-Martin Solar and Space Laboratory / Bay Area Environmental Research Institute
Fee: $35
The Interface Region Imaging Spectrograph (IRIS) observes the chromosphere and the transition region to understand how the solar atmosphere is energized. Since its launch in 2014 it has recorded more than 18,000 data sets in the Mg II h&k spectral range. Recovering the physical information from these data is crucial to answer how energy is transferred from the lower layers of the solar atmosphere to the hot corona. We will demonstrate a new technique that applies to the Mg II h&k spectra that quickly (in a few minutes) enables the recovery of the thermodynamic information within the atmosphere. This new approach is based on several machine learning and artificial intelligence methods. In this workshop we will discuss the concepts, estimated errors, and limitations of the method and, in a hands-on environment, how to implement and execute the code we have developed.


Student Orientation & Grad School Fair

Sunday, 9 June | 5:30 pm – 7:00 pm
Complimentary with meeting registration
Is St. Louis your first AAS Meeting? Are you looking for a Graduate or Research Experience for Undergraduate (REU) Program? Are you overwhelmed by the AAS Meeting? Or are you looking to connect with other students and faculty? Then the Student Orientation & Grad School Fair is for you! Visit with representatives from graduate schools and programs.

Opening Reception

Sunday, 9 June | 7:00 pm − 8:30 pm
Complimentary with meeting registration
Join your colleagues as we kick-off the 234th AAS meeting in St. Louis. This is a great time to network, socialize, eat, drink, and gear up for an exciting week. Turn in your raffle ticket for a chance to win prizes from local businesses and restaurants.

Closing Buffet Breakfast

Thursday, 13 June | 9:30 am – 10:30 am
Complimentary with meeting registration

Field Trip to Cahokia Mounds State Historic Site

Thursday, 13 June | 2:30 pm – 6:00 pm
Just 10 miles east of downtown St. Louis is Cahokia — once the largest and most sophisticated pre-Columbian city north of Mexico and the largest archaeological site in America. At its heyday from 1100 to 1200 CE, Cahokia was home to some 20,000 people and covered over five square miles. Today more than 100 of the giant mounds built by the Cahokians remain. We will stop at the visitor center and interpretive museum and enjoy a guided tour of the site including numerous mounds.


Rodger Doxsey Travel Prize Fund

Contribute $25 or $50 to the Rodger Doxsey Travel Prize Fund
The Rodger Doxsey Travel Prize — established through the support of his father, John Doxsey, and other friends, family, and colleagues — provides graduate students or postdocs within one year of receiving or receipt of their PhD a monetary prize to enable the oral presentation of their dissertation research at a winter meeting of the AAS.

Purchase Carbon Offsets

Contribute up to $100 to the purchase of carbon offsets
Over 90% of the carbon emissions from a typical scientific meeting come from participant travel to the meeting. We are encouraging participants to contribute up to $100 towards the purchase of carbon offsets, which will be used for a variety of third-party certified projects to reduce carbon emissions. Offsets are not a panacea, but will go a small way towards compensating for the meeting's carbon footprint.