An excess of massive stars in the local 30 Doradus starburst

Authors
  • F.R.N. Schneider
  • H. Sana
  • C.J. Evans
  • J.M. Bestenlehner
  • N. Castro
  • L. Fossati
  • G. Gräfener
  • N. Langer
  • O.H. Ramírez-Agudelo
  • C. Sabín-Sanjulián
  • S. Simón-Díaz
  • F. Tramper
  • P.A. Crowther
  • A. de Koter
  • S.E. de Mink
  • P.L. Dufton
  • M. Garcia
  • M. Gieles
  • V. Hénault-Brunet
  • A. Herrero
  • R.G. Izzard
  • V. Kalari
  • D.J. Lennon
  • J. Maíz Apellániz
  • N. Markova
  • F. Najarro
  • Ph. Podsiadlowski
  • J. Puls
  • W.D. Taylor
  • J.Th. van Loon
  • J.S. Vink
  • C. Norman
Publication date 01-2018
Journal Science
Volume | Issue number 359 | 6371
Pages (from-to) 69-71
Organisations
  • Faculty of Science (FNWI) - Anton Pannekoek Institute for Astronomy (API)
Abstract
The 30 Doradus star-forming region in the Large Magellanic Cloud is a nearby analog of large star-formation events in the distant universe. We determined the recent formation history and the initial mass function (IMF) of massive stars in 30 Doradus on the basis of spectroscopic observations of 247 stars more massive than 15 solar masses (Embedded Image). The main episode of massive star formation began about 8 million years (My) ago, and the star-formation rate seems to have declined in the last 1 My. The IMF is densely sampled up to 200 Embedded Image and contains 32 ± 12% more stars above 30 Embedded Image than predicted by a standard Salpeter IMF. In the mass range of 15 to 200 Embedded Image, the IMF power-law exponent is Embedded Image, shallower than the Salpeter value of 2.35.
Document type Article
Language English
Related publication Response to Comment on "An excess of massive stars in the local 30 Doradus starburst"
Published at https://doi.org/10.1126/science.aan0106
Other links https://ui.adsabs.harvard.edu/abs/2018Sci...359...69S/abstract
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