Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...419..739m&link_type=abstract
Astrophysical Journal v.419, p.739
Astronomy and Astrophysics
Astronomy
10
Cosmology: Diffuse Radiation, Ism: Bubbles, Ism: Individual Name: Eridanus, Ultraviolet: Interstellar
Scientific paper
We present Voyager observations of the diffuse far-ultraviolet radiation field (912 Å-1150 Å) in two regions of the Eridanus superbubble A strong continuum is present in both locations which we have identified with starlight scattered by interstellar dust. From the level of this emission (1620‰150 photons cm-2 s-1 sr-1 Å-1) we have placed a lower limit of about 0.3 on the albedo if the scattering is isotropic and an upper limit of about 0.8 on the phase function asymmetry factor (g) if the grains are perfectly reflecting. In addition, O VI (λλ1032/1038) emission with an intensity of 28.7±2.8 × 104 photons cm-2 s-1 sr-1 is apparent in one of the two locations, and C III (977 Å) is visible in both locations with intensities of 2.14±0.75 × 104 and 18.9±1.7 × 104 photons cm-2 s-1 sr-1. The line ratios indicate shock velocities on the order of 90 km s-1 in one of the targets and 180 km s-1 in the other, which is located near a peak of the C-band X-ray emission.
Henry Richard C.
Holberg Jay Brian
Im Myungshin
Murthy Jayant
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