we propose to use the unique capabilites of iso to study g159.6-18.5, a possible supernova remnant embedded in an interstellar dust cloud. this object appears on the iras sky plates as a nearly complete ring of emission, and is brightest at 100 microns. the entire ring has a diameter of about 75., and contains regions of enhanced emission in several bright knots around the rim as well as in the center. we have made observations of this object in the co(1->0) line as well as continuum observations with the vla and the effelsberg 100-m radio telescope. the remarkable result of these observations is that the shell is filled with non-thermal radiation with a spectral index of about -0.7. since the non-thermal radiation is confined to the interior of the shell, we suspect that the shell is material that has been swept up by an expanding shock wave. in order to test this hypothesis we wish to make far-infrared observations of two of the bright knots using the long-wavelength spectrometer aboard iso. we note that, at b = -18.5 degrees, this object has the highest galactic latitude of any known supernova remnant. the hii region ic348 is near the northeast edge of the ring.
Instrument
LWS01 , LWS04
Temporal Coverage
1997-09-05T07:27:44Z/1997-09-05T08:37:16Z
Version
1.0
Mission Description
The Infrared Space Observatory (ISO) was the world's 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, 1998, Far-Infrared Spectroscopy Of G159.6-18.5: A Possible Dust-Embedded Supernova Remnant, 1.0, European Space Agency, https://doi.org/10.5270/esa-wwlg8y8
