bulge in contact with green spots

• by Budgieye moderator

  Hot hydrogen is green at z=0.01

  I don' t think that DECaLS and PanSTARRS are good at detecting green, but I am not sure.

  

  http://skyservice.pha.jhu.edu/DR9/ImgCutout/getjpeg.aspx?ra=321.32847183&dec=-3.10934802&scale=0.049515875&width=512&height=512&opt=&query=

  edges of green don't look much like cosmic ray hits.

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  But no hot hydrogen in spectrum

  Definitely a flat boring spectrum.

  So, cosmic ray hit?

  Posted May 31, 2017 11:25 PM

• by CeciliaB

  Thank you, Budgieye! I suppose there doesn't seem to be any other alternatives than a cosmic ray hit, then. Except Ghost_Sheep_SWR's suggestion ( top post to the left), which may not be the very first thing that springs to mind 😄

  Posted June 1, 2017 4:08 PM

• by Ghost_Sheep_SWR

  

  I can't find it in any other survey, only in one SDSS band and only in one field image while this galaxy is visible in two field images. Can also clearly see the difference between original image and images used in Galaxy Zoo, feature looks much more square-edged and pixelated. So I think artifact. Galaxy is also Infrared source and Ultraviolet source acccording to NED.

  With feature: https://dr9.sdss.org/fields/runCamcolField?run=8083&camcol=5&field=58

  Without feature: https://dr9.sdss.org/fields/runCamcolField?run=4832&camcol=3&field=504

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  And here is the actual FITS file image of SDSS DR9 r band:

  

  Btw there's also a nice nebula very close, mainly to the left visible in DECaLS.

  Hope this helps

  Posted June 1, 2017 7:58 PM

• by Budgieye moderator

  Nice lots of nebulousity

  

  http://legacysurvey.org/viewer/jpeg-cutout/?ra=321.3683&dec=-3.0925&zoom=12&layer=decals-dr2

  Posted June 2, 2017 6:23 AM