Séminaire IPAG

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Titans in the Sky: The Most Massive Stars

jeudi 24 octobre 2024 - 11h00

Jeremy Goodman - Princeton U.
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The observed masses of stars range roughly from one tenth to one hundred times that of the Sun. The lower limit is well understood physically, but the upper limit is not. Indeed, stars of much greater mass may have existed at cosmic dawn; they may have been the progenitors of ancient quasars recently discovered by the James Webb Space Telescope. The disks surrounding supermassive black holes are themselves a likely birthplace for very massive stars, by analogy with the formation of planets in the disks of protostars but on a grander scale. These matters will be reviewed, together with progress in understanding the physical limits to stellar mass.

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Salle Manuel Forestini, 414 rue de la piscine, 38400 Saint Martin d'Hères