Classification
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Hello to any wandering scientist, and #pleasehelp
This one looked very strange, both here visually and in regards to the SDSS spectrum.
Does it look like the 5 round objects are following the spiral arms? Two on a left arm, 3 on the bottom arm?The spectrum on SDSS is also a little strange, there's even a warning there that says "MANY_OUTLIERS".
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Budgieye
moderator
This is a quasar. It is easier to see on the Skyserver image, because hot hydrogen is pink in SDSS (or green is it is "close".
quasar.
http://skyserver.sdss.org/dr9/en/tools/explore/obj.asp?id=1237661125071208589
quasar
http://skyserver.sdss.org/dr9/en/get/specById.asp?id=1781341927212345344
Big and wide hydrogen peak, and a large rise in the violet at 400nm showing there is much heat.
3see .2 Quasars and Blazars http://talk.galaxyzoo.org/#/boards/BGZ0000001/discussions/DGZ0000wrb?page=3&comment_id=53d8b8b70d43f77b9e000f84
The other objects are stars in our galaxy, getting in the way. You can see lots more in the neighbourhood.
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Thanks for the explanation. I think it's kinda cool the other objects lined up so well with the arms.
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Budgieye
moderator
Interesting to see that SDSS software first identified it as a star. Some other software then said "wrong colour for star (unless it is a blue+red binary star" 4.8 spectroscopic binary stars http://talk.galaxyzoo.org/#/boards/BGZ0000001/discussions/DGZ0000wrb?page=4&comment_id=53d8b9d70d43f776b000109a), so a spectrum was done to see what it was. Software then confirmed it as a QSO, or quasar.
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Budgieye
moderator
Also interesting that it is not a blazar, which is white . We are looking at it side-on. . I suppose the axis of the black hole is not lined up with the axis of the galaxy.
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