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Hunting for red supergiant binaries: UVIT photometry of the SMC

Published online by Cambridge University Press:  29 August 2024

Lee R. Patrick Open the ORCID record for Lee R. Patrick [Opens in a new window] ,
David Thilker ,
Danny Lennon ,
Luciana Bianchi ,
Abel Schootemeijer Open the ORCID record for Abel Schootemeijer [Opens in a new window] ,
Ricardo Dorda ,
Norbert Langer Open the ORCID record for Norbert Langer [Opens in a new window]  and
Ignacio Negueruela Open the ORCID record for Ignacio Negueruela [Opens in a new window]
Lee R. Patrick*
Affiliation:
Departamento de Física Aplicada, Universidad de Alicante, E-03690 San Vicente del Raspeig, Alicante, Spain School of Physical Sciences, The Open University, Walton Hall, Milton Keynes MK7 6AA, UK
David Thilker
Affiliation:
Department of Physics and Astronomy, Johns Hopkins University, 3400 N. Charles Street, Baltimore, MD 21218, USA
Danny Lennon
Affiliation:
Instituto de Astrofísica de Canarias, E-38205 La Laguna, Tenerife, Spain Universidad de La Laguna, Dpto. Astrofísica, E-38206 La Laguna, Tenerife, Spain
Luciana Bianchi
Affiliation:
Department of Physics and Astronomy, Johns Hopkins University, 3400 N. Charles Street, Baltimore, MD 21218, USA
Abel Schootemeijer
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
Ricardo Dorda
Affiliation:
Department of Physics and Astronomy, Johns Hopkins University, 3400 N. Charles Street, Baltimore, MD 21218, USA Instituto de Astrofísica de Canarias, E-38205 La Laguna, Tenerife, 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
Ignacio Negueruela
Affiliation:
Departamento de Física Aplicada, Universidad de Alicante, E-03690 San Vicente del Raspeig, Alicante, Spain
*
email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

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. We present UVIT/Astrosat UV photometry of the RSG population of the Small Cloud galaxy (SMC). As RSGs are extremely faint in the far-UV, these observations directly probe potential companion stars. From a sample of 861 SMC RSGs, we find 88 have detections at far-UV wavelengths: a clear signature of binarity. Stellar parameters are determined for both components, which allows us to study - for the first time - the mass-ratio (q) distribution of RSG binary systems. We find a flat mass-ratio distribution best describes the observations up to MRSG ∼15M⊙. We account for our main observing bias (i.e. the limiting magnitude of the UVIT survey) to determine the intrinsic RSG binary fraction of 18.8 ± 1.5 %, for mass-ratios in the range 0.3.<q<1.0 and orbital periods approximately in the range 3<log P[days]<8.

Keywords

stars: late-typestars: binariesgalaxies: Magellanic Clouds
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 18 , Symposium S361: Massive Stars Near and Far , May 2022 , pp. 279 - 285
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Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

References

Beasor, E. R., Davies, B., Smith, N., & Bastian, N. 2019, MNRAS, 486, 266 Google Scholar
Bianchi, L., & Shiao, B. 2020, ApJS, 250, 36 Google Scholar
Britavskiy, N., et al. 2019, A&A, 624, A128 Google Scholar
Burki, G., & Mayor, M. 1983, A&A, 124, 256 Google Scholar
Choi, J., Dotter, A., Conroy, C., Cantiello, M., Paxton, B., & Johnson, B. D. 2016, ApJ, 823, 102 Google Scholar
Davies, B., et al. 2013, ApJ, 767, 3 Google Scholar
Dorda, R., & Patrick, L. R. 2021, MNRAS, 502, 4890 CrossRefGoogle Scholar
Dotter, A. 2016, ApJS, 222, 8 Google Scholar
Eldridge, J. J., Izzard, R. G., & Tout, C. A. 2008, MNRAS, 384, 1109 Google Scholar
Evans, C. J., et al. 2011, A&A, 527, A50 Google Scholar
Collaboration, Gaia et al. 2021, A&A, 649, A1 Google Scholar
Gieles, M., Sana, H., & Portegies Zwart, S. F. 2010, MNRAS, 402, 1750 Google Scholar
Gordon, K. D., Clayton, G. C., Misselt, K. A., Landolt, A. U., & Wolff, M. J. 2003, ApJ, 594, 279 CrossRefGoogle Scholar
Langer, N. 2012, ARA&A, 50, 107 Google Scholar
Langer, N., et al. 2020, A&A, 638, A39 Google Scholar
Moe, M., & Di Stefano, R. 2017, ApJS, 230, 15 Google Scholar
Neugent, K. F. 2021, ApJ, 908, 87 CrossRefGoogle Scholar
Neugent, K. F., Levesque, E. M., Massey, P., Morrell, N. I., & Drout, M. R. 2020, ApJ, 900, 118 Google Scholar
Neugent, K. F., Massey, P., Morrell, N. I., Skiff, B., & Georgy, C. 2018, AJ, 155, 207 CrossRefGoogle Scholar
Patrick, L., Bianchi, L. C., Dorda, R., Langer, N., Lennon, D. J., Negueruela, I., & Thilker, D. 2021, Cool stars with hot companions in the Small Magellanic Cloud, HST Proposal. Cycle 29, ID. #16776Google Scholar
Patrick, L. R., Evans, C. J., Davies, B., Kudritzki, R.-P., Hénault-Brunet, V., Bastian, N., Lapenna, E., & Bergemann, M. 2016, MNRAS, 458, 3968 Google Scholar
Patrick, L. R., Thilker, D., Lennon, D. J., Bianchi, L., Schootemeijer, A., Dorda, R., Langer, N., & Negueruela, I. 2022, MNRAS, 513, 5847 Google Scholar
Patrick, L. R., et al. 2019, A&A, 624, A129 Google Scholar
Patrick, L. R. 2020, A&A, 635, A29 Google Scholar
Sana, H., et al. 2012, Science, 337, 444 Google Scholar
Schneider, F. R. N., Ohlmann, S. T., Podsiadlowski, P., Röpke, F. K., Balbus, S. A., Pakmor, R., & Springel, V. 2019, Nature 574, 211 Google Scholar
Schneider, F. R. N., et al. 2014, ApJ, 780, 117 Google Scholar
Schootemeijer, A., Langer, N., Grin, N. J., & Wang, C. 2019, A&A, 625, A132 Google Scholar
Sen, K., et al. 2022, A&A, 659, A98 Google Scholar
Tabernero, H. M., Dorda, R., Negueruela, I., & González-Fernández, C. 2018, MNRAS, 476, 3106 Google Scholar
Yang, M., et al. 2020, A&A, 639, A116 Google Scholar