Publikationsdatum:
2019-06-27
Beschreibung:
The object is anomalous, and the existing data appear to be rather contradictory or ambiguous. We discuss previous and new observations. The new observations are: Palomar Schmidt plates in the blue, yellow, red, and near-infrared; radiofrequency-continuum maps at 7.875 and 15.5 GHz; flux densities at 31.4 and 85 GHz; and H 94 alpha-line data. A nebula, found only in the red, is identifiable with a small component of a supernova remnant which is altogether about 1 deg in diameter. The spectral index of the large, nonthermal remnant is prevalently about -0.8, but the index is probably not less than -0.5 in the small component. The amorphous structure of the red nebula suggests that its light is nonthermal, since it is not a reflection nebula of the star gamma Cygni.
Schlagwort(e):
ASTROPHYSICS
Materialart:
Astrophysical Journal; 194; Dec. 1
Format:
text
