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Discovery of SiO Ma...
Discovery of SiO Masers in the "Water Fountain" Source IRAS 16552-3050
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- Amada, K. (author)
- Kagoshima University
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- Imai, H. (author)
- Kagoshima University
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- Hamae, Y. (author)
- Kagoshima University
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- Nakashima, K. (author)
- Kagoshima University
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- Shum, K. Y. (author)
- Kagoshima University
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- Tafoya, Daniel, 1981 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Uscanga, L. (author)
- Universidad de Guanajuato
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- Gomez, J. F. (author)
- Agencia Estatal Consejo Superior de Investigaciones Científicas,Spanish National Research Council
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- Orosz, G. (author)
- Chinese Academy of Sciences,University of Tasmania
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- Burns, R. A. (author)
- Korea Astronomy and Space Science Institute,National Astronomical Observatory of Japan
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(creator_code:org_t)
- 2022-01-24
- 2022
- English.
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In: Astronomical Journal. - : American Astronomical Society. - 1538-3881 .- 0004-6256. ; 163:2
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Abstract
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- In this paper, we report new detections of SiO v = 1 and v = 2 J = 1 -> 0 masers in the "water fountain" source IRAS 16552-3050, which was observed with the Nobeyama 45 m telescope during 2021 March-April. Water fountains are evolved stars whose H2O maser spectra trace high-velocity outflows of >100 km s(-1). This is the second known case of SiO masers in a water fountain, after their prototypical source, W 43A. These SiO masers should shed light on the evolutionary status of this category of evolved stars, which are likely to be at the end of the asymptotic giant branch phase, when the star exhibits the most copious stellar mass loss, followed by development of the complicated morphologies of planetary nebulae. The origin of a large (up to 25 km s(-1)) velocity offset of the SiO masers with respect to the systemic velocity derived from the spectrum of CO J = 2 -> 1 line is discussed here.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik -- Vattenteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering -- Water Engineering (hsv//eng)
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Oceanografi, hydrologi och vattenresurser (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Oceanography, Hydrology and Water Resources (hsv//eng)
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- ref (subject category)
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- By the author/editor
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Amada, K.
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Imai, H.
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Hamae, Y.
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Nakashima, K.
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Shum, K. Y.
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Tafoya, Daniel, ...
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show more...
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Uscanga, L.
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Gomez, J. F.
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Orosz, G.
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Burns, R. A.
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show less...
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Oceanography Hyd ...
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Chalmers University of Technology