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Evolution of the outflow traced by water masers in the evolved star IRAS 18043—2116

Published online by Cambridge University Press:  07 February 2024

Lucero Uscanga Open the ORCID record for Lucero Uscanga [Opens in a new window] ,
Hiroshi Imai Open the ORCID record for Hiroshi Imai [Opens in a new window] ,
José F. Gómez Open the ORCID record for José F. Gómez [Opens in a new window] ,
Daniel Tafoya ,
Gabor Orosz Open the ORCID record for Gabor Orosz [Opens in a new window] ,
Tiege P. McCarthy Open the ORCID record for Tiege P. McCarthy [Opens in a new window] ,
Yuhki Hamae  and
Kei Amada Open the ORCID record for Kei Amada [Opens in a new window]
Lucero Uscanga*
Affiliation:
Departamento de Astronomía, Universidad de Guanajuato, A.P. 144, 36000 Guanajuato, Gto., Mexico.
Hiroshi Imai
Affiliation:
Center for General Education, Institute for Comprehensive Education, Kagoshima University 1-21-30 Korimoto, Kagoshima 890-0065, Japan
José F. Gómez
Affiliation:
Instituto de Astrofísica de Andalucía, CSIC, Glorieta de la Astronomía s/n, E-18008 Granada, Spain
Daniel Tafoya
Affiliation:
Department of Space, Earth and Environment, Chalmers University of Technology, Onsala Space Observatory, 439 92 Onsala, Sweden
Gabor Orosz
Affiliation:
Joint Institute for VLBI ERIC, Oude Hoogeveensedijk 4, 7991 PD Dwingeloo, The Netherlands
Tiege P. McCarthy
Affiliation:
School of Natural Sciences, University of Tasmania, Private Bag 37, Hobart, Tasmania 7001, Australia
Yuhki Hamae
Affiliation:
Department of Physics and Astronomy, Faculty of Science, Kagoshima University 1-21-35 Korimoto, Kagoshima 890-0065, Japan
Kei Amada
Affiliation:
Department of Physics and Astronomy, Graduate School of Science and Engineering, Kagoshima University 1-21-35 Korimoto, Kagoshima 890-0065, Japan
*
email: [email protected]
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Abstract

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We present the spectral and spatial evolution of H2O masers associated with IRAS 18043–2116, a well-known water fountain hosting a high-velocity collimated jet, which has been found in the observations with the 45 m telescope of Nobeyama Radio Observatory and the Australia Telescope Compact Array. We found new highest velocity components of the H2O masers, with which the resulting velocity spread of ≃ 540 km s−1 breaks the speed record of fast jets/outflows in this type of sources.

Keywords

masersstars: AGB and post-AGBstars: individuals (IRAS 18043–2116)
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 18 , Symposium S380: Cosmic Masers: Proper Motion toward the Next-Generation Large Projects , December 2022 , pp. 338 - 342
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Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

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