Most nearby young star clusters formed in three massive complexes

Cameren Swiggum (), João Alves, Robert Benjamin, Sebastian Ratzenböck, Núria Miret-Roig, Josefa Großschedl, Stefan Meingast, Alyssa Goodman, Ralf Konietzka, Catherine Zucker, Emily L. Hunt and Sabine Reffert
Additional contact information
Cameren Swiggum: University of Vienna
João Alves: University of Vienna
Robert Benjamin: University of Wisconsin-Whitewater
Sebastian Ratzenböck: University of Vienna
Núria Miret-Roig: University of Vienna
Josefa Großschedl: University of Vienna
Stefan Meingast: University of Vienna
Alyssa Goodman: Center for Astrophysics | Harvard & Smithsonian
Ralf Konietzka: Center for Astrophysics | Harvard & Smithsonian
Catherine Zucker: Center for Astrophysics | Harvard & Smithsonian
Emily L. Hunt: Zentrum für Astronomie der Universität Heidelberg
Sabine Reffert: Zentrum für Astronomie der Universität Heidelberg

Nature, 2024, vol. 631, issue 8019, 49-53

Abstract: Abstract Efforts to unveil the structure of the local interstellar medium and its recent star-formation history have spanned the past 70 years (refs. 1–6). Recent studies using precise data from space astrometry missions have revealed nearby, newly formed star clusters with connected origins7–12. Nonetheless, mapping young clusters across the entire sky back to their natal regions has been hindered by a lack of clusters with precise radial-velocity data. Here we show that 155 out of 272 (57%) high-quality young clusters13,14 within 1 kiloparsec of the Sun arise from three distinct spatial volumes. This conclusion is based on the analysis of data from the third Gaia release15 and other large-scale spectroscopic surveys. At present, dispersed throughout the solar neighbourhood, their past positions more than 30 million years ago reveal that these families of clusters each formed in one of three compact, massive star-forming complexes. One of these families includes all of the young clusters near the Sun—the Taurus and Scorpius–Centaurus star-forming complexes16,17. We estimate that more than 200 supernovae were produced from these families and argue that these clustered supernovae produced both the Local Bubble18 and the largest nearby supershell GSH 238+00+09 (ref. 19), both of which are clearly visible in modern three-dimensional dust maps20–22.

Date: 2024
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DOI: 10.1038/s41586-024-07496-9

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