| NSF Org: |
AST Division Of Astronomical Sciences |
| Recipient: |
|
| Initial Amendment Date: | August 3, 2021 |
| Latest Amendment Date: | August 19, 2024 |
| Award Number: | 2102405 |
| Award Instrument: | Fellowship Award |
| Program Manager: |
Louise O. V. Edwards
loedward@nsf.gov (703)292-7597 AST Division Of Astronomical Sciences MPS Directorate for Mathematical and Physical Sciences |
| Start Date: | October 1, 2021 |
| End Date: | July 31, 2024 (Estimated) |
| Total Intended Award Amount: | $300,000.00 |
| Total Awarded Amount to Date: | $297,500.00 |
| Funds Obligated to Date: |
FY 2023 = $0.00 |
| History of Investigator: |
|
| Recipient Sponsored Research Office: |
Garching GM |
| Sponsor Congressional District: |
|
| Primary Place of Performance: |
Austin TX US 78712-1205 |
| Primary Place of
Performance Congressional District: |
|
| Unique Entity Identifier (UEI): |
|
| Parent UEI: |
|
| NSF Program(s): | NSF ASTRON & ASTROPHY PSTDC FE |
| Primary Program Source: |
010V2122DB R&RA ARP Act DEFC V |
| Program Reference Code(s): |
|
| Program Element Code(s): |
|
| Award Agency Code: | 4900 |
| Fund Agency Code: | 4900 |
| Assistance Listing Number(s): | 47.049 |
ABSTRACT
This award is funded in whole or in part under the American Rescue Plan Act of 2021 (Public Law 117-2). Dominique Segura-Cox is awarded an NSF Astronomy and Astrophysics Postdoctoral Fellowship to conduct a program of research and education at the University of Texas. Segura-Cox will observationally explore the properties of ?streamers? ? long, thin funnels connecting material between the natal envelopes and disks of young protostars ? and compare the observations with simulations of mass accretion in protostars. Results from this study will allow astronomers to understand how material is accreted onto protostars and what role streamers play in the early stages of star and planet formation. For the education component of this project, Segura-Cox will develop an astronomy-themed seminar series for middle school and high school teachers in rural and socioeconomically disadvantaged communities.
This project will conduct radio interferometric observations of asymmetric streamers to study their chemical composition, occurrence, and from how far away they accrete material into planet-forming disks. By measuring the chemical composition of the streamers and comparing it to exoplanet compositions, the likelihood of streamer material being directly incorporated into planets will be assessed. Using ongoing surveys, the proportion of protostars with streamers will be systematically determined to assess whether streamers are a common mass-accretion pathway for planet-forming disks. Using follow-up observations, the full extent of streamers from clouds to disks will be determined. Comparing observations with simulations will permit determination of mass infall rates, magnetic field strengths, and streamer chemical evolution with time.
This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
PUBLICATIONS PRODUCED AS A RESULT OF THIS RESEARCH
Note:
When clicking on a Digital Object Identifier (DOI) number, you will be taken to an external
site maintained by the publisher. Some full text articles may not yet be available without a
charge during the embargo (administrative interval).
Some links on this page may take you to non-federal websites. Their policies may differ from
this site.
Please report errors in award information by writing to: awardsearch@nsf.gov.
