Hostname: page-component-586b7cd67f-t8hqh Total loading time: 0 Render date: 2024-11-21T16:16:00.443Z Has data issue: false hasContentIssue false
  • English
  • Français

Observations south of HD 5980

Published online by Cambridge University Press:  29 August 2024

Andrés Sixtos Open the ORCID record for Andrés Sixtos [Opens in a new window] ,
Aida Wofford Open the ORCID record for Aida Wofford [Opens in a new window]  and
Antonio Peimbert
Andrés Sixtos*
Affiliation:
Intituto de Astronomía, UNAM
Aida Wofford
Affiliation:
Intituto de Astronomía, UNAM
Antonio Peimbert
Affiliation:
Intituto de Astronomía, UNAM
*
email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We study the He II λ4686 emission south of multiple-star system HD 5980, which hosts two WN-type stars. We use optical VLT FORS1 long-slit spectra. The observations are close to the eclipse phase. Broad He II emission with a SNR >5 is observed as far as 7.6 pc from HD 5980. The He II emission that is closest to HD 5980 is 1.2 pc directly south and has a redshifted component with FWHM 1450 km s-1 originating in the eclipsing WN5-6 star, and a blueshifted component with FWHM 600 km s-1. The second component cannot be explained by either the nearly- eclipsed WN star or the nearby supernova remnant, SNR B0057-724. We suggest that the additional He II emission comes from the colliding winds of the two WN stars.

Keywords

binaries: eclipsingstars: individual (HD 5980)stars: Wolf–RayetHII regionsMagellanic Clouds
Type
Poster Paper
Information
Proceedings of the International Astronomical Union , Volume 18 , Symposium S361: Massive Stars Near and Far , May 2022 , pp. 334 - 335
Check for updates
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

Alarie, A. & Morisset, C. 2019, Rev. Mex. Astron. Astrofís, 55, 377 Google Scholar
Hillier, D. John, Koenigsberger, Gloria, Nazé, Yaël, Morrell, Nidia, Barbá, Rodolfo H. & Gamen, Roberto 2003, MNRAS, 486, 725Google Scholar
Kauffmann, Guinevere, Heckman, Timothy M., Tremonti, Christy, Brinchmann, Jarle, Charlot, Stéphane, White, Simon D. M., Ridgway, Susan E., Brinkmann, Jon, Fukugita, Masataka, Hall, Patrick B., Ivezić, Željko, Richards, Gordon T., Schneider, Donald P. 2003, MNRAS, 346, 1055Google Scholar
Kewley, L. J., Dopita, M. A., Sutherland, R. S., Heisler, C. A. & Trevena, J. 2001, ApJ, 556, 121 CrossRefGoogle Scholar
Koenigsberger, Gloria, Morrell, Nidia, Hillier, D. John, Gamen Roberto, Schneider, Fabian R. N., González-Jiménez, Nicolás, Langer, Norbert & Barbá, Rodolfo 2014, AJ, 148, 62CrossRefGoogle Scholar