Mass loss from an extreme OH/IR star: OH 26.5+0.6

Kay Justtanont; Sebastien Muller; M. J. Barlow; D. Engels; D. A. García-Hernández; M. A. T. Groenewegen; M. Matsuura; Henrik Olofsson; D. Teyssier

Mass loss from an extreme OH/IR star: OH 26.5+0.6
Paper i proceeding, 2017

Observations of H 2 O isotopologues of the extreme OH/IR star OH 26.5+0.6 show that the star has an initial mass consistent with it being an intermediate-mass star. The Herschel-HIFI spectra show clear detection of H 162 O and H 172 O while H 182 O is missing, consistent with the prediction of hot bottom burning which occurs in stars with an initial mass ≥ 5 M ʘ . The star is currently losing mass at a high rate of a few 10 -4 M ʘ yr −1 which is thought to commence in the past ∼ 200 years. We present new ALMA CO J=3-2 image which show that this high mass loss (superwind) region is compact, surrounded by extended shells of lower mass loss.

Circumstellar matter

Mass-loss

Stars: evolution

Submillimeter: stars

Stars: AGB and post-AGB

Författare

Kay Justtanont

Astronomi och plasmafysik

Forskning Andra publikationer

Sebastien Muller

Chalmers, Rymd- och geovetenskap, Onsala rymdobservatorium

Forskning Andra publikationer

M. J. Barlow

University College London (UCL)

D. Engels

Hamburger Sternwarte

D. A. García-Hernández

Universidad de la Laguna

Instituto de Astrofísica de Canarias

M. A. T. Groenewegen

Koninklijke Sterrenwacht van België

M. Matsuura

Cardiff University

Henrik Olofsson

Chalmers, Rymd- och geovetenskap, Onsala rymdobservatorium

Forskning Andra publikationer

D. Teyssier

European Space Astronomy Centre (ESAC)

Memorie della Societa Astronomica Italiana - Journal of the Italian Astronomical Society

1824016X (ISSN)

Vol. 88 3 342-345

2017 AGB-Supernovae Mass Transition
Monte Porzio Catone, Italy,

Ämneskategorier

Subatomär fysik

Astronomi, astrofysik och kosmologi

Annan geovetenskap och miljövetenskap

Mer information

Senast uppdaterat

2022-06-03

Mass loss from an extreme OH/IR star: OH 26.5+0.6 Paper i proceeding, 2017

Författare

Kay Justtanont

Sebastien Muller

M. J. Barlow

D. Engels

D. A. García-Hernández

M. A. T. Groenewegen

M. Matsuura

Henrik Olofsson

D. Teyssier

Memorie della Societa Astronomica Italiana - Journal of the Italian Astronomical Society

Ämneskategorier

Mer information

Senast uppdaterat

Mass loss from an extreme OH/IR star: OH 26.5+0.6
Paper i proceeding, 2017