We present soft X-ray, NH, and IR maps of the Eridanus soft X-ray enhancement. Soft X-ray maps from the HEAO 1 A-2 LED experiment, processed with a maximum entropy method (MEM) algorithm, show that the enhancement consists of two distinct components : a large hook-shaped component and a small circular component at different temperatures. Both of these are located in "holes" in the IR emission, and they correspond to NH features at very different velocities. The dust surrounding the X-ray enhancements appears to be associated with several high-latitude molecular clouds, which allow us to obtain a probable distance of ∼ 130 pc to the near edge of the main enhancement. The total power emitted by the hot gas is then ∼ 1035-1036 ergs s-1. We consider alternative interpretations of these objects as adiabatic supernova remnants or as stellar wind bubbles and conclude that they are more likely to be stellar wind bubbles, possibly reheated by a SN explosion in the case of the main, hook-shaped object.
All Science Journal Classification (ASJC) codes
- Astronomy and Astrophysics
- Space and Planetary Science