A few things, FermatsBrother:
I note that the computer has classified it as a quasar.
If the computer classifications were reliable, there'd be no point to Galaxyzoo. You haven't seen classifications that are wrong yet? Further, it's classified as a QSO, not a quasar. All quasars are QSO's, but not all QSO's are quasars. It's a broad category.
Looks like any object in your collection with z >0.45, is a quasar.
I have looked at the sample quasar charts a lot. Why do you say that? Any quasar under z=0.45 should have a broad-based very tall peak at H-alpha as tall or taller than the OIII peak. Do you see that in the "Peas" on these pages? And what about a broad-based peak at H-beta? I don't think there is a hard dividing line between quasars and OIII's necessarily, but those are some key features that are absent.
Regarding color, doesn't SDSS display infrared (or UV) on the navigable map as red (or blue)? Isn't that why blue stars look bluer on here than they would be in person? Because the UV is displayed as blue? So a peak in the infrared should equate to a redder-colored image. Right?
One last thought: we generally get one spectral chart per object, but there are visible variations in color and shape that are not covered in that one measurement and are worthy of discussion and pontification.
Hi Starry - In response to your comments.
1. Sorry about the search engine I gave you to look at. I've never used it, never even investigated it. Just thought that it might be useful - obviously not !
2. "All quasars are QSO's, but not all QSO's are quasars". We're on different wavelengths here. I don't even know if the computer designates "quasar".
As I understand it, the name "quasar" is a contraction of the term quasistellar object (QSO).
3. I simply noted (no critisism implied) that, in your collection,
the computer had designated objects with
z >0.45, as a quasar (oops! sorry QSO). I don't understand why you are referring me to your objects "under z=0.45" ie
z <0.45.
BTW, as you must be aware from my postings, I'm the last person to defend a computer designation.
4. "doesn't SDSS display infrared (or UV) on the navigable map as red (or blue)?" Well Starry, I know that you are keen on asteroids as well as "peas", and have noticed the gap between the red and the blue. If UV & IR were to be displayed, it would show up here. I'll look a bit deeper into your contention though; you must have picked it up from somewhere !
5. Keep up the good work,
Cheers -
Fermats Brother
