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The problem with it being a pair or cluster of interacting galaxies is that there's no absorption lines coming from the spectra being taken of the object. It's a pure line emitter, which would say that it's most likely a planetary nebula. Interacting galaxies tend to be both line emitters and have absorption features too. You have to remember that Ha is not in the infrared part of the spectrum, it's in the red (6533A or 656.3nm). Interacting galaxies tend to have a lot of Ha emissions as well as dust (IR), maser emissions from various molecular species and lots of radio emissions. This thing is quite as in the radio and doesn't appear in IRAS.
What would put it beyond doubt would be a determination of its Z number.
Anyone got a spectra from the object??
Last edited by renormalised; 01-08-2009 at 08:33 PM.
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