Tracing our Chemical Origins with the R-Process Alliance

Presentations

• R-Process Alliance: Abundances of >2000 metal-poor stars

  ORAL

  March 18, 2025, 3:45 PM – March 18, 2025, 3:57 PM

  Presenters

  • Terese T Hansen

    • Stockholm University

  Authors

  • Terese T Hansen

    • Stockholm University

  • Anna Frebel

    • Massachusetts Institute of Technology

  • Ian U Roederer

    • North Carolina State University

  • Erika M Holmbeck

    • Lawrence Livermore National Laboratory

  • Rana Ezzeddine

    • University of Florida

  • Charli M Sakari

    • San Francisco State University

  • Vinicius M Placco

    • NSF NOIRLab

  • Timothy C Beers

    • University of Notre Dame

  • Mila Racca

    • Stockholm University

  View abstract →

• R-Process Alliance: The Principal Components of Metal-poor Stars

  ORAL

  March 18, 2025, 3:57 PM – March 18, 2025, 4:09 PM

  Presenters

  • Erika M Holmbeck

    • Lawrence Livermore National Laboratory

  Authors

  • Erika M Holmbeck

    • Lawrence Livermore National Laboratory

  • Ian U Roederer

    • North Carolina State University

  • Joshua D Simon

    • Carnegie Observatories

  • Timothy C Beers

    • University of Notre Dame

  • Rana Ezzeddine

    • University of Florida

  • Anna Frebel

    • Massachusetts Institute of Technology

  • Terese T Hansen

    • Stockholm University

  • Vinicius M Placco

    • NSF NOIRLab

  • Charli M Sakari

    • San Francisco State University

  View abstract →

• The R-Process Alliance: Discovery of an Extremely R-process-enhanced Thin-disk Star

  ORAL

  March 18, 2025, 4:09 PM – March 18, 2025, 4:21 PM

  Publication: Discovery of an Extremely r-process-enhanced Thin-disk Star with [Eu/H] = +0.78,
  Xie, X.-J. et al. 2024, Astrophysical Journal (Letters), 970, 30

  Presenters

  • Timothy C Beers

    • University of Notre Dame

  Authors

  • Timothy C Beers

    • University of Notre Dame

  View abstract →

• The R-Process Alliance: Enrichment of R-process Elements in Simulated Milky Way-like Galaxies

  ORAL

  March 18, 2025, 4:21 PM – March 18, 2025, 4:33 PM

  Publication: 10.48550/arXiv.2410.11943
  10.1093/mnras/stac2489

  Presenters

  • Yutaka Hirai

    • Tohoku University

  Authors

  • Yutaka Hirai

    • Tohoku University

  • Timothy C Beers

    • University of Notre Dame

  • Young Sun Lee

    • Chungnam National University

  • Shinya Wanajo

    • Max Planck Institute for Gravitational Physics

  • Ian U Roederer

    • North Carolina State University

  • Masaomi Tanaka

    • Tohoku University

  • Masashi Chiba

    • Tohoku University

  • Takayuki R Saitoh

    • Kobe University

  • Vinicius M Placco

    • NSF NOIRLab

  • Terese T Hansen

    • Stockholm University

  • Rana Ezzeddine

    • University of Florida

  • Anna Frebel

    • Massachusetts Institute of Technology

  • Erika M Holmbeck

    • Lawrence Livermore National Laboratory

  • Charli M Sakari

    • San Francisco State University

  View abstract →

• The R-Process Alliance: Actinide Mass Fractions of R-Process Events through Cosmic Time

  ORAL

  March 18, 2025, 4:33 PM – March 18, 2025, 4:45 PM

  Presenters

  • Shivani P Shah

    • University of Florida

  Authors

  • Shivani P Shah

    • University of Florida

  • Erika M Holmbeck

    • Lawrence Livermore National Laboratory

  • Rana Ezzeddine

    • University of Florida

  • Alexander P Ji

    • University of Chicago

  • Terese T Hansen

    • Stockholm University

  • Anna Frebel

    • Massachusetts Institute of Technology

  • Vinicius M Placco

    • NSF NOIRLab

  • Ian U Roederer

    • North Carolina State University

  • Charli M Sakari

    • San Francisco State University

  • Timothy C Beers

    • University of Notre Dame

  • Sam A Usman

    • University of Chicago

  • Mohammad K Mardini

    • Zarqa University

  View abstract →

• The R-Process Alliance: Investigations of the R-Process in Globular Clusters and Chemodynamically Tagged Groups

  ORAL

  March 18, 2025, 4:45 PM – March 18, 2025, 4:57 PM

  Publication: Cabrera Garcia, J., Sakari, C.M., Roederer, I.U., et al. 2024, The Astrophysical Journal, 967, 101. doi:10.3847/1538-4357/ad380b
  Agnos, J., Sakari, C.M., Hansen, T.T., et al. 2025, in preparation

  Presenters

  • Charli M Sakari

    • San Francisco State University

  Authors

  • Charli M Sakari

    • San Francisco State University

  View abstract →

• The R-Process-Alliance: Tracing the nucleosynthesis history of the faint r-process enhanced metal-poor stars in the MW halo

  ORAL

  March 18, 2025, 4:57 PM – March 18, 2025, 5:09 PM

  Publication: The Astrophysical Journal Supplement Series, Volume 274, Issue 2, id.39, 24 pp.

  Presenters

  • Avrajit Bandyopadhyay

    • University of Florida

  Authors

  • Avrajit Bandyopadhyay

    • University of Florida

  • Rana Ezzeddine

    • University of Florida

  • Timothy C Beers

    • University of Notre Dame

  • Vinicius M Placco

    • NSF NOIRLab

  • Anna Frebel

    • Massachusetts Institute of Technology

  • Erika M Holmbeck

    • Lawrence Livermore National Laboratory

  • Charli M Sakari

    • San Francisco State University

  • Ian U Roederer

    • North Carolina State University

  • Carlos Allende Prieto

    • Instituto de Astrofísica de Canarias

  • Shivani P Shah

    • University of Florida

  • Terese T Hansen

    • Stockholm University

  • Nima Aria

    • University of Florida

  View abstract →

• R-Process Alliance: unveiling the abundance patterns of ten r-II stars through homogeneous spectral analysis

  ORAL

  March 18, 2025, 5:09 PM – March 18, 2025, 5:21 PM

  Publication: Planned paper:
  R-Process Alliance: unveiling the abundance patterns of ten r-II stars through homogeneous spectral analysis

  Presenters

  • Mila Racca

    • Stockholm University

  Authors

  • Mila Racca

    • Stockholm University

  • Terese T Hansen

    • Stockholm University

  • Ian U Roederer

    • North Carolina State University

  • Vinicius M Placco

    • NSF NOIRLab

  • Erika M Holmbeck

    • Lawrence Livermore National Laboratory

  • Timothy C Beers

    • University of Notre Dame

  • Rana Ezzeddine

    • University of Florida

  • Anna Frebel

    • Massachusetts Institute of Technology

  • Charli M Sakari

    • San Francisco State University

  View abstract →