SIMBAD references

2001AJ....122.2679P - Astron. J., 122, 2679-2685 (2001/November-0)

Coordinated millimeter VLBI array observations of R Cassiopeiae: 86 GHz SiO masers and envelope dynamics.

PHILLIPS R.B., SIVAKOFF G.R., LONSDALE C.J. and DOELEMAN S.S.

Abstract (from CDS):

Coordinated Millimeter VLBI Array measurements at 86 GHz have imaged the silicon monoxide masers of the nearby red giant R Cassiopeiae at two epochs separated by approximately 1/12 the stellar pulsation period. The v=1, J=2⟶1 transition comes from a ring at 1.5 to 2 stellar radii. Doppler velocity patterns are ordered over scales up to ∼1 AU but are not consistent with simple models such as global rotation. One major masing region disappeared in the interval between the two epochs.

Abstract Copyright: ∼

Journal keyword(s): Stars: Circumstellar Matter - Radio Emission Lines - Stars: AGB and Post-AGB - Techniques: Interferometric

Simbad objects: 6

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