• Any member or affiliate of the AAS may submit an abstract. 
• The abstract must be submitted through the online system. 
• A nonmember may submit an abstract. 
• Pending members of the AAS/DPS may submit an abstract. Please contact the Membership Department to submit your membership applications. 
• Submission of an abstract indicates all authors agree to adhere to AAS/DPS meeting policies and code of conduct 
• Presenters must be listed as the first author on the paper. 
• Presenting/first author must register for the meeting. 
• Presenting/first author must be the presenter at the meeting. 
  • On rare occasions, AAS/HEAD will consider exceptions to this rule in the case of a major illness or other emergencies. The first author should e-mail the Science Organizing Committee in advance of the presentation, explaining the situation and suggesting a backup presenter. 

AAS Members 

• Any AAS member may submit an abstract. You can verify your membership status in the Member Directory. 
• Suspended/Inactive members must reinstate their membership. 

AAS Affiliates 

• Suspended/Inactive affiliates must reinstate their membership. 

Nonmembers 

• Undergraduate nonmembers must submit an abstract as a nonmember and are subject to the usual rules governing the presentation of abstracts by nonmembers. 
• Society of Physics Student Affiliates are considered nonmembers for abstract submission and may register at the Undergraduate Student Member rate. 

Abstracts Per Meeting 

You may submit the following Regular abstracts per meeting:


One (1) free Oral Research Contributed abstract or poster
There are no limitation to Poster submissions (1st one is free )


Additional abstracts beyond 1 will be $45.00 per additional submitted abstract.


In addition, you may be invited to give an oral presentation in one of the following types of sessions:
Plenary Session (prize or invited talk) or Special Session, invited abstracts will not count against your 1st free research contributed entry.


If you have not submitted any Regular abstracts of any type listed above, you may submit one Late-breaking Poster abstract.

There is no limit to the number of abstracts that you may co-author. NOTE: The abstract body text can be a maximum of 2,250 characters (which includes letters, numbers, punctuation, and symbols/special characters). 

Plenary Presentations 

• Prize Lectures 
• Oral Invited Lectures 

Contributed Presentations 

• Oral Presentations
• Poster 

Regular oral presentations, as well as dissertation oral presentations, are generally arranged by topic. 

Types of Discussion Sessions 

All presenters are expected to participate in the asynchronous discussion via slack.  

Abstracts must be submitted through the presenting author's AAS record. Co-authors are not eligible to substitute as the presenting author. The presenting author will be notified once the schedule has been determined. 

Abstract Login Instructions 

To submit an abstract, you must first log into the system using your AAS Login. 

• If you are a member of the AAS you should already have a login.  
• If you are not a member of the AAS you may create an AAS Login if you do not already have one. 

Abstract Form Details 

The form contains instructions on the various steps required to complete a submission. 

• The abstract must be complete and submitted by the deadline, 11:59 pm EDT, 13 December 2021. 
• The abstract body text can be a maximum of 2,250 characters (which includes letters, numbers, punctuation, and symbols/special characters). 
• To enter co-authors, you must have the following: full first and last name, e-mail address, and affiliation. 
• You can continue to make changes to your abstract before the deadline. To edit an abstract, sign back in and find the abstract you submitted and make changes. Please remember to resubmit once you have made changes. 

To switch the presenting author to a co-author you must submit a new abstract by logging in as the new presenting author. 

Categories are used as a guide for the Scientific Organizing Committee to build coherent sessions. The final session assignments and session titles are at the discretion of the Committee. 

Research Contributed Presentations  

• AGN
• Galaxy Clusters/Large Scale Structures
• ISM/Galaxies
• Mission and Instruments
• Multi-messenger Astrophysics
• Stellar/Compact Objects
• Time-domain Astrophysics

All presenters must register for the full meeting. Presentations of either Oral or Poster contributions are expected to be done in person. Remote oral presentations are discouraged and will only be arranged in special circumstances.

• Contributed Oral Presentations will be 15 minutes in length (typically 12 minutes for the presentation and 3 minutes for questions/transition to the next speaker).
• Posters must fit within a physical space of 4 feet by 4 feet.
• Please contact the HEAD Secretary ([email protected]) for more information.

• Online Program of Abstracts — Available during the meeting; includes full abstract text. 
• Astrophysics Data System (ADS) — Abstracts are sent to ADS and typically published shortly before the meeting. 

Edits to Abstracts 

• If you have a problem with the scheduling of your presentation, please email the abstract help desk. We will try to accommodate your request if possible. 
• We understand that edits sometimes need to be made to abstracts after they are submitted. We try hard to accommodate edits and changes as we lead up to the conference, but due to certain deadlines we will be unable to edit abstracts within two weeks of the meeting start date/.