rz sgr is the sole s star and the only lithium-rich star known to be associated with visible nebulosity. it thus provides us with a unique opportunity to trace the mass-loss history of an asymptotic giant branch (agb) star over a significant fraction of its thermal pulsing lifetime. current evidence suggests that rz sgr is a low-mass star, making it a particularly interesting individual object because there is, as yet, no theoretical understanding of the process of lithium enrichment among low-mass stars. we propose a detailed study of this star and its nebula using the iso instrumentation.
Instrument
PHT03 , PHT40
Temporal Coverage
1996-03-21T08:07:44Z/1996-03-28T14:57:50Z
Version
1.0
Mission Description
The Infrared Space Observatory (ISO) was the worlds first true orbiting infrared observatory. Equipped with four highly-sophisticated and versatile scientific instruments, it was launched by Ariane in November 1995 and provided astronomers world-wide with a facility of unprecedented sensitivity and capabilities for a detailed exploration of the Universe at infrared wavelengths.
European Space Agency, WHITELOCK et al., 1999, 'MASS-LOSS HISTORY OF THE LITHIUM-RICH S STAR RZ SGR', 1.0, European Space Agency, https://doi.org/10.5270/esa-9l6qjmx
