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A multiwavelength study of the Eridanus soft X-ray enhancementWe present soft X-ray, N(H), 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 N(H) 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 about 130 pc to the near edge of the main enhancement. The total power emitted by the hot gas is then about 10 exp 35 to 10 exp 36 ergs/s. 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.
Document ID
19930046540
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Burrows, D. N.
(Pennsylvania State Univ. University Park, United States)
Singh, K. P.
(Tata Inst. of Fundamental Research Bombay, India)
Nousek, J. A.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Garmire, G. P.
(Pennsylvania State Univ. University Park, United States)
Good, J.
(California Inst. of Technology Pasadena, United States)
Date Acquired
August 16, 2013
Publication Date
March 20, 1993
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 406
Issue: 1
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
93A30537
Funding Number(s)
CONTRACT_GRANT: JPL-657268
CONTRACT_GRANT: NAG5-100
CONTRACT_GRANT: NAG8-478
CONTRACT_GRANT: NAG8-758
CONTRACT_GRANT: NAG5-941
Distribution Limits
Public
Copyright
Other

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