SIMBAD references

2009ApJ...695L.203Z - Astrophys. J., 695, L203-L207 (2009/April-3)

Dynamical phenomena in the atmosphere of the proto-planetary nebula IRAS 22272+5435.

ZACS L., SPERAUSKAS J., MUSAEV F.A., SMIRNOVA O., YANG T.C., CHEN W.P. and SCHMIDT M.

Abstract (from CDS):

Radial velocity monitoring of the star HD 235858 confirmed regular variations with a peak-to-peak amplitude of about 10 km/s and a period of about 131.2 days. The light, color, and velocity variations are typical for RV Tauri stars. Splitting of low-excitation atomic lines was detected. The components are both blue- and redshifted relative to the systemic velocity. Significant variations are observed in the intensity of C2 and CN lines. Variable emission in the Hα profile, splitting of low-excitation atomic absorption lines, appearance of CN emission lines, blue wings of strong lines, and recent reddening give evidence of shocks and mass outflow obviously induced by atmospheric pulsations.

Abstract Copyright:

Journal keyword(s): line: profiles - shock waves - stars: AGB and post-AGB - stars: mass loss - stars: oscillations - stars: winds, outflows

Simbad objects: 4

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2019.11.18-00:42:11

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