CO, Water, and Possible Methanol in Eta Carinae Approaching Periastron

25 Feb 2020 Morris Patrick W. Charnley Steven B. Corcoran Michael Cordiner Martin Damineli Augusto Groh Jose H. Gull Theodore R. Loinard Laurent Madura Thomas Mehner Andrea Moffat Anthony Palmer Maureen Y. Rau Gioia Richardson Noel D. Weigelt Gerd

In circumstellar gas, the complex organic molecule methanol has been found almost exclusively around young stellar objects, and is thus regarded as a signpost of recent star formation. Here we report the first probable detection of methanol around an evolved high-mass star, in the complex circumstellar environment around the Luminous Blue Variable $\eta$ Carinae, while using ALMA to investigate molecular cloud conditions traced by CO (2-1) in an orbit phase of the massive binary preceding the 2020 periastron... (read more)

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  • SOLAR AND STELLAR ASTROPHYSICS
  • ASTROPHYSICS OF GALAXIES