Classification
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I looked at the spectra of this on SDSS. It has high H-alpha and VERY high O-III.
Here it just looks bright and a little blueish, the brightness and blueness are even greater there(SDSS). Does anyone have a moment to explain this 😄Posted
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by JeanTate in response to Ariaiyc's comment.
Here's the spectrum of SDSS J162758.29+201444.1:
This is very much what an on-going 'starburst' looks like; where a large number of stars are forming in a small space ('small' by astronomers' standards!) in a short time. The (strong) emission lines - from [OII] to [ArIII] - are produced in the many nebulae associated with the brightest of the young stars, rather than the stars themselves; sorta like the Orion Nebula, a thousand times over.
The blueishness in the images is due to a combination of the way the filters are combined to produce the RGB images and the dominance of the two bright [OIII] emission lines (plus H-beta); these fall in the part of the spectrum captured by the g-band filter and mapped to the B in RGB images.
Hope this helps, and happy hunting! 😃
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by Ariaiyc_goingawayn0w in response to JeanTate's comment.
Yes and thanks!
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