we propose to make continuum and recombination line observations of the radio stars mwc349 and eta carinae which show strong hydrogen recombination line maser emission at millimeter and submillimetre wavelengths. the proposed observations will provide the kinematics and the physical properties (density and temperature structure) as a function of radius for these ionized stellar winds and will tell us to what extent maser emission also affects hydrogen recombination lines with smaller quantum numbers. from the full characterization of the ionized stellar winds in these sources we will be able to obtain confident mass loss rates, and put strong constrains on the driving mechanisms for the mass loss in these sources. in particular, for mwc349, the data will essential to establish the role of the neutral disk in the mass loss processes, to derive its kinematics, and to establish the nature of the central star (young or evolved).
Instrument
LWS04 , PHT22 , SWS02 , SWS07
Temporal Coverage
1996-09-03T16:38:31Z/1996-12-02T01:26:48Z
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, MARTIN-PINTADO et al., 1999, 'THE PHYSICAL PROPERTIES OF THE STELLAR WINDS IN SELECTED RADIO STARS', 1.0, European Space Agency, https://doi.org/10.5270/esa-v79tbwb
