IRAS 17393-3004, a late-type supergiant surrounded by a dust shell
Philipp, Sabine · Tuffs, Richard J. · Mezger, Peter G. · Zylka, Robert
Original · EN
Infrared observations of IRAS 17393-3004, including a full scan ISOSWS are presented. The ISOSWS spectrum shows two prominent dust emission peaks at lambda 10.4mu and 17.5mu confirming that the source is a luminous star surrounded by a dust shell. The spectrum of the star, deduced from modeling of the radiative transfer through a spherical shell using the DUSTY code (Ivezic et al. 1997), can be explained along with other known properties in terms of an M4 supergiant with OH, SiO and H₂O maser emission and a large mass loss of 10⁻⁴M(sun)yr⁻¹.
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