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Massive stars in metal-poor dwarf galaxies are often extreme rotators

Published online by Cambridge University Press:  29 August 2024

Abel Schootemeijer Open the ORCID record for Abel Schootemeijer [Opens in a new window] ,
Danny J. Lennon ,
Miriam Garcia Open the ORCID record for Miriam Garcia [Opens in a new window] ,
Norbert Langer Open the ORCID record for Norbert Langer [Opens in a new window] ,
Ben Hastings  and
Christoph Schürmann Open the ORCID record for Christoph Schürmann [Opens in a new window]
Abel Schootemeijer*
Affiliation:
Argelander-Institut für Astronomie, Universität Bonn, Auf dem Hügel 71, 53121 Bonn, Germany
Danny J. Lennon
Affiliation:
Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Spain Departamento de Astrofísica, Universidad de La Laguna, E-38205 La Laguna, Tenerife, Spain
Miriam Garcia
Affiliation:
Centro de Astrobiología, CSIC-INTA. Crtra. de Torrejón a Ajalvir km 4, E-28850 Torrejón de Ardoz (Madrid), Spain
Norbert Langer
Affiliation:
Argelander-Institut für Astronomie, Universität Bonn, Auf dem Hügel 71, 53121 Bonn, Germany Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
Ben Hastings
Affiliation:
Argelander-Institut für Astronomie, Universität Bonn, Auf dem Hügel 71, 53121 Bonn, Germany Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
Christoph Schürmann
Affiliation:
Argelander-Institut für Astronomie, Universität Bonn, Auf dem Hügel 71, 53121 Bonn, Germany Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
*
email: [email protected]
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Abstract

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We probe how common extremely rapid rotation is among massive stars in the early universe by measuring the OBe star fraction in nearby metal-poor dwarf galaxies. We apply a new method that uses broad-band photometry to measure the galaxy-wide OBe star fractions in the Magellanic Clouds and three more distant, more metal-poor dwarf galaxies. We find OBe star fractions of ∼20% in the Large Magallanic Cloud (0.5Zȯ), and ∼30% in the Small Magellanic Cloud (0.2Zȯ) as well as in the so-far unexplored metallicity range 0.1 Z/Zȯ < 0.2 occupied by the other three dwarf galaxies. Our results imply that extremely rapid rotation is common among massive stars in metal-poor environments such as the early universe.

Keywords

stars: early-typestars: rotationgalaxies: Magellanic Clouds
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 18 , Symposium S361: Massive Stars Near and Far , May 2022 , pp. 63 - 69
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Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

References

Aguilera-Dena, D. R., Langer, N., Moriya, T. J., & Schootemeijer, A. 2018, ApJ, 858, 115 CrossRefGoogle Scholar
Bianchi, L., Efremova, B., Hodge, P., Massey, P., & Olsen, K. A. G. 2012, AJ, 143, 74 Google Scholar
Bonanos, A. Z., et al. 2009, AJ, 138, 1003 CrossRefGoogle Scholar
Bonanos, A. Z., et al. 2010, AJ, 140, 416 Google Scholar
Croxall, K. V., van Zee, L., Lee, H., Skillman, E. D., Lee, J. C., Côté, S., Kennicutt, Robert C., J., & Miller, B. W. 2009, ApJ, 705, 723CrossRefGoogle Scholar
Dohm-Palmer, R. C., Skillman, E. D., Mateo, M., Saha, A., Dolphin, A., Tolstoy, E., Gallagher, J. S., & Cole, A. A. 2002, AJ, 123, 813 CrossRefGoogle Scholar
Dufton, P. L., Evans, C. J., Hunter, I., Lennon, D. J., & Schneider, F. R. N. 2019, A&A, 626, A50 Google Scholar
Collaboration, Gaia et al. 2021, A&A, 649, A1 Google Scholar
Holtzman, J. A., Afonso, C., & Dolphin, A. 2006, ApJS, 166, 534 CrossRefGoogle Scholar
Hunter, I., Lennon, D. J., Dufton, P. L., Trundle, C., Simón-Daz, S., Smartt, S. J., Ryans, R. S. I., & Evans, C. J. 2008, A&A, 479, 541 Google Scholar
Iqbal, S., & Keller, S. C. 2013, MNRAS, 435, 3103 Google Scholar
Kaaret, P., Feng, H., & Roberts, T. P. 2017, ARA&A, 55, 303 CrossRefGoogle Scholar
Kaufer, A., Venn, K. A., Tolstoy, E., Pinte, C., & Kudritzki, R.-P. 2004, AJ, 127, 2723 Google Scholar
Keller, S. C., Wood, P. R., & Bessell, M. S. 1999, A&AS, 134, 489 Google Scholar
Langer, N. 1992, A&A, 265, L17 Google Scholar
Lunnan, R., et al. 2014, ApJ, 787, 138 Google Scholar
Maeder, A., Grebel, E. K., & Mermilliod, J.-C. 1999, A&A, 346, 459 Google Scholar
Marchant, P., Langer, N., Podsiadlowski, P., Tauris, T. M., & Moriya, T. J. 2016, A&A, 588, A50 Google Scholar
Martayan, C., Frémat, Y., Hubert, A. M., Floquet, M., Zorec, J., & Neiner, C. 2007, A&A, 462, 683 Google Scholar
Mateo, M. L. 1998, ARA&A, 36, 435 Google Scholar
McSwain, M. V., & Gies, D. R. 2005, ApJS, 161, 118 Google Scholar
Meixner, M., et al. 2006, AJ, 132, 2268 Google Scholar
Peters, M., et al. 2020, AJ, 159, 119 Google Scholar
Poeckert, R., & Marlborough, J. M. 1976, ApJ, 206, 182 Google Scholar
Sabbi, E., et al. 2018, ApJS, 235, 23 Google Scholar
Schootemeijer, A., Langer, N., Grin, N. J., & Wang, C. 2019, A&A, 625, A132 CrossRefGoogle Scholar
Schootemeijer, A., et al. 2021, A&A, 646, A106 CrossRefGoogle Scholar
Struve, O. 1931, ApJ, 73, 94 Google Scholar
Vink, J. S., Davies, B., Harries, T. J., Oudmaijer, R. D., & Walborn, N. R. 2009, A&A, 505, 743 Google Scholar
Wisniewski, J. P., & Bjorkman, K. S. 2006, ApJ, 652, 458 Google Scholar
Zaritsky, D., Harris, J., Thompson, I. B., & Grebel, E. K. 2004, AJ, 128, 1606 Google Scholar
Zaritsky, D., Harris, J., Thompson, I. B., Grebel, E. K., & Massey, P. 2002, AJ, 123, 855 Google Scholar
Zorec, J., & Briot, D. 1997, A&A, 318, 443 Google Scholar