Response to Comment on "An excess of massive stars in the local 30 Doradus starburst"

Fabian R N Schneider; Hugues Sana; Christopher J Evans; Joachim M Bestenlehner; Norberto Castro; Luca Fossati; Götz Gräfener; Norbert Langer; Oscar H Ramírez-Agudelo; Carolina Sabín-Sanjulián; Sergio Simón-Díaz; Frank Tramper; Paul A Crowther; Alexander de Koter; Selma E de Mink; Philip L Dufton; Miriam Garcia; Mark Gieles; Vincent Hénault-Brunet; Artemio Herrero; Robert G Izzard; Venu Kalari; Danny J Lennon; Jesús Maíz Apellániz; Nevy Markova; Francisco Najarro; Philipp Podsiadlowski; Joachim Puls; William D Taylor; Jacco Th van Loon; Jorick S Vink; Colin Norman

doi:10.1126/science.aat7032

Response to Comment on "An excess of massive stars in the local 30 Doradus starburst"

Science. 2018 Jul 27;361(6400):eaat7032. doi: 10.1126/science.aat7032.

Authors

Fabian R N Schneider¹, Hugues Sana², Christopher J Evans³, Joachim M Bestenlehner^{4

5}, Norberto Castro⁶, Luca Fossati⁷, Götz Gräfener⁸, Norbert Langer⁸, Oscar H Ramírez-Agudelo³, Carolina Sabín-Sanjulián⁹, Sergio Simón-Díaz^{10

11}, Frank Tramper¹², Paul A Crowther⁵, Alexander de Koter^{2

13}, Selma E de Mink¹³, Philip L Dufton¹⁴, Miriam Garcia¹⁵, Mark Gieles¹⁶, Vincent Hénault-Brunet^{17

18}, Artemio Herrero^{10

11}, Robert G Izzard^{16

19}, Venu Kalari²⁰, Danny J Lennon¹², Jesús Maíz Apellániz²¹, Nevy Markova²², Francisco Najarro¹⁵, Philipp Podsiadlowski^{23

8}, Joachim Puls²⁴, William D Taylor³, Jacco Th van Loon²⁵, Jorick S Vink²⁶, Colin Norman^{27

28}

Affiliations

¹ Department of Physics, University of Oxford, Oxford OX1 3RH, UK. fabian.schneider@physics.ox.ac.uk.
² Institute of Astrophysics, KU Leuven, 3001 Leuven, Belgium.
³ UK Astronomy Technology Centre, Royal Observatory Edinburgh, Edinburgh EH9 3HJ, UK.
⁴ Max-Planck-Institut für Astronomie, 69117 Heidelberg, Germany.
⁵ Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, UK.
⁶ Department of Astronomy, University of Michigan, Ann Arbor, MI 48109, USA.
⁷ Austrian Academy of Sciences, Space Research Institute, 8042 Graz, Austria.
⁸ Argelander-Institut für Astronomie der Universität Bonn, 53121 Bonn, Germany.
⁹ Departamento de Física y Astronomía, Universidad de La Serena, La Serena, Chile.
¹⁰ Instituto de Astrofísica de Canarias, E-38205 La Laguna, Tenerife, Spain.
¹¹ Departamento de Astrofísica, Universidad de La Laguna, E-38206 La Laguna, Tenerife, Spain.
¹² European Space Astronomy Centre, Mission Operations Division, 28691 Villanueva de la Cañada, Madrid, Spain.
¹³ Astronomical Institute Anton Pannekoek, Amsterdam University, 1098 XH Amsterdam, Netherlands.
¹⁴ Astrophysics Research Centre, School of Mathematics and Physics, Queen's University Belfast, Belfast BT7 1NN, Northern Ireland, UK.
¹⁵ Centro de Astrobiología (CSIC-INTA), E-28850 Torrejón de Ardoz, Madrid, Spain.
¹⁶ Department of Physics, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford GU2 7XH, UK.
¹⁷ National Research Council, Herzberg Astronomy & Astrophysics, Victoria, BC V9E 2E7, Canada.
¹⁸ Department of Astrophysics/IMAPP, Radboud University, NL-6500 GL Nijmegen, Netherlands.
¹⁹ Institute of Astronomy, The Observatories, Cambridge CB3 0HA, UK.
²⁰ Departamento de Astronomía, Universidad de Chile, Las Condes, Santiago, Casilla 36-D, Chile.
²¹ Centro de Astrobiología, CSIC-INTA, ESAC Campus, E-28 692 Villanueva de la Cañada, Spain.
²² Institute of Astronomy with National Astronomical Observatory, Bulgarian Academy of Sciences, 4700 Smoljan, Bulgaria.
²³ Department of Physics, University of Oxford, Oxford OX1 3RH, UK.
²⁴ Ludwig-Maximilians-Universität München, 81679 München, Germany.
²⁵ Lennard-Jones Laboratories, Keele University, Staffordshire ST5 5BG, UK.
²⁶ Armagh Observatory, College Hill, Armagh BT61 9DG, Northern Ireland, UK.
²⁷ Johns Hopkins University, Homewood Campus, Baltimore, MD 21218, USA.
²⁸ Space Telescope Science Institute, Baltimore, MD 21218, USA.

PMID: 30049852
DOI: 10.1126/science.aat7032

Abstract

Farr and Mandel reanalyze our data, finding initial mass function slopes for high-mass stars in 30 Doradus that agree with our results. However, their reanalysis appears to underpredict the observed number of massive stars. Their technique results in more precise slopes than in our work, strengthening our conclusion that there is an excess of massive stars (>30 solar masses) in 30 Doradus.

Publication types

Research Support, Non-U.S. Gov't
Comment

MeSH terms

Extraterrestrial Environment*
Stars, Celestial*
Time