Rotationally Extended Stellar Envelopes—IV: The Detached Shell of HD 187399

Rotationally Extended Stellar Envelopes—IV: The Detached Shell of HD 187399

Spectrographic observations were obtained at 6.5 Å mm–1 of the shell star HD 187399 before, during and after an outburst, in June and July 1970. Velocity and line profile measurements are presented. A model for the stellar envelope is deduced from these data and calculations of stellar and shell lin...

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Veröffentlicht in:Mon. Notic. Roy. Astron. Soc. 155: No. 3, 357-71(1972) 357-71(1972), 1972-01, Vol.155 (3), p.357-371
Hauptverfasser: Hutchings, J. B., Laskarides, P. G.
Format: Artikel
Sprache:eng
Schlagworte:
BALMER LINES
DISTURBANCES
MATTER
N56200 -Physics (Astrophysics & Cosmology)-Stars
OPTICAL DISPERSION
RINGS
ROTATION
SPECTRA
SPECTROPHOTOMETRY
SPECTROSCOPY
STARS
STARS/structure of HD 187399, model for shell, (E)
STELLAR ATMOSPHERES
VELOCITY
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Zusammenfassung:Spectrographic observations were obtained at 6.5 Å mm–1 of the shell star HD 187399 before, during and after an outburst, in June and July 1970. Velocity and line profile measurements are presented. A model for the stellar envelope is deduced from these data and calculations of stellar and shell line profiles. The shell and line of sight lie near the equatorial plane and the shell probably consists of one or more discrete rings of matter. Most of the mass of each ring does not return to the stellar surface and the shell is thought to be replenished by fairly frequent outbursts of the type observed.
ISSN:0035-8711
1365-2966
DOI:10.1093/mnras/155.3.357