The mid-infrared diameter of W Hydrae

2011/04/08 by R. Zhao-Geisler, A. Quirrenbach, R. Koehler +3 · 1 citation
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics and Star Formation Studies #Asymptotic giant branch #Carbon star #Chemical composition #Circumstellar dust #Cosmic dust #Giant star #Interstellar medium #Main sequence #Stars #Stellar, planetary, and galactic studies #astro-ph.SR

paper · pdf · doi:10.1051/0004-6361/201016310

18 pages, 16 figures

openalex publication_date 2011/04/08 · arxiv created 2011/04/30 · arxiv updated 2015/05/28 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Aims. Asymptotic giant branch (AGB) stars are among the largest distributors of dust into the interstellar medium, and it is therefore important to understand the dust formation process and sequence in their strongly pulsating extended atmosphere. By monitoring the AGB star W Hya interferometrically over a few pulsations cycles, the upper atmospheric layers can be studied to obtain information on their chemical gas and dust composition and their intracycle and cycle-to-cycle behavior.

Citations

• Winds of M- and S-type AGB stars: an unorthodox suggestion for the driving mechanism
• Multi-wavelength Diameters of Nearby Miras and Semiregulars
• A study of bright Southern long period variables
• The K-band intensity profile of R Leonis probed by VLTI/VINCI
• Interferometric observations of the Mira staro Ceti with the VLTI/VINCI instrument in the near-infrared
• Probing the mass-loss history of AGB and red supergiant stars from CO rotational line profiles - II. CO line survey of evolved stars: derivation of mass-loss rate formulae

Cited by

• Clumpy dust clouds and extended atmosphere of the AGB star W Hydrae revealed with VLT/SPHERE-ZIMPOL and VLTI/AMBER

Related

• Extended atmospheres of AGB stars: modeling and measurement
• Mass loss of stars on the asymptotic giant branch
• Circumstellar water vapour in M-type AGB stars: radiative transfer models, abundances, and predictions for HIFI
• Recent mass ejection from AGB star W Hya
• Interferometric imaging diagnostics of X Hya's circumstellar environment