Abstract
Low surface brightness clouds observed at optical, infrared, and radio wavelengths are discussed. We present evidence that some clouds at high galactic latitudes are associated with the Local Group, M81, and possibly even with higher redshift extragalactic objects.
Low temperature clouds at high latitude must affect at some level the short wave length side of the cosmic background radiation. If some of these clouds are extragalactic there should be a further effect on the interpretation of CBR measures.
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Arp, H., Sulentic, J.W. The probable extragalactic nature of some low surface brightness clouds at high galactic latitude. Astrophys Space Sci 185, 249–263 (1991). https://doi.org/10.1007/BF00643192
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DOI: https://doi.org/10.1007/BF00643192