Disk Detective Talk
W1 saturated?
Yes, that seems to be two of the same star, this is an interesting one because it is not your usual O/B star.
@lineman36--nope, you're seeing a very bright star that is saturating the photographic plate in the DSS--see "Example of Saturated Star"
semi-regular variable or contact #binary
saturation probable in W1, listed as extended source in WISE catalog
unresolved #galaxy #quasar in SDSS
#galaxy as reported by SDSS and galaxy zoo
#carbonstar
B1.5III, Be spectral type, 0.5" separation #binary
Ghost from bright source to the south skewing the image scaling in 2MASS
Looks like interacting galaxies?
Significant nebulosity, in the KIC catalog
@artman40 you should definitely mark this as "Multiple Objects" We may come back to these later, but we want to know if W4 is confused.
#galaxy, 2MASS extended source
#galaxy
http://cas.sdss.org/astro/en/tools/explore/obj.asp?id=587738068344897688 SDSS classifies this as galaxy, spectrum confirms it.
Elevated W4 background
Elevated background in W4
Please see: http://talk.diskdetective.org/#/boards/BWI0000009/discussions/DWI00000ot
Nice reading of the literature @WizerdHowl! My quick scan of the literature suggests, no one has looked at this one very closely!
This is a perfect example of why we need you guys! The SED would look like a good candidate--except for that pesky IR bright source ~10"
#goodcandidate, K-type star
#goodcandidate M-type star
Galaxies can be pretty dusty, so they can get really bright at the longer wavelengths.
Note that the brighter point source at 9 o'clock seems more extended at K. Could have been bad seeing when the image was taken.
#artifact in DSS2 Blue
You're just seeing some background noise--You would want to see that brighter white part or lighter blue part extending.
Unusual #SED
A deeper dig into the literature seems to suggest that this is a known K giant with lots of lithium in its atmosphere.
These are pretty rare too. Very cool!
That bright object is beyond the red circle so should be ok.
Probably not since you see something faintly in the WISE bands. This is an #imageissue the scaling is thrown off by the bright object
I suspect this is a case of saturation in the WISE bands...
Yes, I'd mark it as such.
To me that looks like noise.
Interesting #SED
looks extended to me, possible #galaxy
#galaxy, peanut shape in DSS images
#galaxy, note the faint spiral arms.
#artifact most likely--the DSS are from photographic plates and they have more problems in their images
So how to mark this? "Moving" would work, or since you don't see a round source in the WISE4, you could also mark "Empty Circle".
Yes, I interpret this as a visible-bright object in the center getting dimmer, but another object getting really bright at WISE4.
Actually, the visible looks #saturated very bright stars will have strange structure in the visible.
What specifically are you asking about? The shape at shorter wavelengths, or the bright source outside the circle in WISE4?
Looks extended to me--just try your best and look at some of the images others have collected/tagged.
For really bright stars, some of the images in the visible will be saturated, giving the images a weird shape.
#artifact!
Most of these image scalings are focused on the central target, so relative brightness in each image doesn't translate to real flux per se.
This would definitely be a case of "Multiple sources within the circle". Probably a galaxy, most of them will look a little fuzzy in DSS
Wow, never saw one in WISE before.
Technically this would be a visual double because we don't know if they're related or at the same distance.
I would mark this one as both having multiple objects in the circle.
Hi Meg, thanks for stopping by! Looks fairly good, maybe a bit extended at the short wavelengths...kind of a tough call.
If the source is faint in the 2MASS images, the noise can make it look distorted.
That is pretty weird. The star may be very bright and saturating, causing the weird shape.
Probably!
That looks like a slight misregistration--if you flip between the DSS and the 2MASS images both the fainter and brighter objects shift.
If you click on the "More info on SIMBAD", you'll get the coordinates and perhaps some additional info.
Definitely not round at the shorter wavelengths. Hard to say whether it's because the object is a #galaxy or two objects very close.
Yes, you can see faint spiral arms in the visible--good catch.
It appears that a very mid-IR bright object is throwing off the image scaling, rendering the candidate invisible in WISE4
A satellite or asteroid #trail for sure.
I would mark this one as a clean candidate.
This is a bright star and is saturating the image in the shorter wavelengths--the spikes are from the diffraction of the telescope.
Our bias right now is that the perfect circular ones are the "most interesting", but we also want to find weirdos, in case they're cool!
If you feel that the bright source may be contaminated, selecting "multiple sources within circle" would work.
A clean candidate star will need to have a clear, near-round shape, so anything like this should be marked as "extended".
small shifts like that are probably due to slight misalignments in the images. To me the visible images look extended, maybe #galaxy.
This is tough case--the 22 micron image does look a bit odd. The size in the visible is due to the stars being bright.
Great catch!
The DSS2 images are taken from photographic plates...so that could have been a crack in the plate or similar.
Possibly, but that very bright object just outside the circle may be throwing the WISE photometry off, or the scaling on the images.
W1 saturated?
Yes, that seems to be two of the same star, this is an interesting one because it is not your usual O/B star.
@lineman36--nope, you're seeing a very bright star that is saturating the photographic plate in the DSS--see "Example of Saturated Star"
semi-regular variable or contact #binary
saturation probable in W1, listed as extended source in WISE catalog
unresolved #galaxy #quasar in SDSS
#galaxy as reported by SDSS and galaxy zoo
#carbonstar
B1.5III, Be spectral type, 0.5" separation #binary
Ghost from bright source to the south skewing the image scaling in 2MASS
Looks like interacting galaxies?
Significant nebulosity, in the KIC catalog
@artman40 you should definitely mark this as "Multiple Objects" We may come back to these later, but we want to know if W4 is confused.
#galaxy, 2MASS extended source
#galaxy
http://cas.sdss.org/astro/en/tools/explore/obj.asp?id=587738068344897688
SDSS classifies this as galaxy, spectrum confirms it.
Elevated W4 background
Elevated background in W4
Please see: http://talk.diskdetective.org/#/boards/BWI0000009/discussions/DWI00000ot
Nice reading of the literature @WizerdHowl! My quick scan of the literature suggests, no one has looked at this one very closely!
This is a perfect example of why we need you guys! The SED would look like a good candidate--except for that pesky IR bright source ~10"
#goodcandidate, K-type star
#goodcandidate M-type star
Galaxies can be pretty dusty, so they can get really bright at the longer wavelengths.
Note that the brighter point source at 9 o'clock seems more extended at K. Could have been bad seeing when the image was taken.
#artifact in DSS2 Blue
You're just seeing some background noise--You would want to see that brighter white part or lighter blue part extending.
Unusual #SED
A deeper dig into the literature seems to suggest that this is a known K giant with lots of lithium in its atmosphere.
These are pretty rare too. Very cool!
That bright object is beyond the red circle so should be ok.
Probably not since you see something faintly in the WISE bands. This is an #imageissue the scaling is thrown off by the bright object
I suspect this is a case of saturation in the WISE bands...
Yes, I'd mark it as such.
To me that looks like noise.
Interesting #SED
looks extended to me, possible #galaxy
#galaxy, peanut shape in DSS images
#galaxy, note the faint spiral arms.
#artifact most likely--the DSS are from photographic plates and they have more problems in their images
So how to mark this? "Moving" would work, or since you don't see a round source in the WISE4, you could also mark "Empty Circle".
Yes, I interpret this as a visible-bright object in the center getting dimmer, but another object getting really bright at WISE4.
Actually, the visible looks #saturated very bright stars will have strange structure in the visible.
What specifically are you asking about? The shape at shorter wavelengths, or the bright source outside the circle in WISE4?
Looks extended to me--just try your best and look at some of the images others have collected/tagged.
For really bright stars, some of the images in the visible will be saturated, giving the images a weird shape.
#artifact!
Most of these image scalings are focused on the central target, so relative brightness in each image doesn't translate to real flux per se.
This would definitely be a case of "Multiple sources within the circle". Probably a galaxy, most of them will look a little fuzzy in DSS
Wow, never saw one in WISE before.
Technically this would be a visual double because we don't know if they're related or at the same distance.
I would mark this one as both having multiple objects in the circle.
Hi Meg, thanks for stopping by! Looks fairly good, maybe a bit extended at the short wavelengths...kind of a tough call.
If the source is faint in the 2MASS images, the noise can make it look distorted.
That is pretty weird. The star may be very bright and saturating, causing the weird shape.
Probably!
That looks like a slight misregistration--if you flip between the DSS and the 2MASS images both the fainter and brighter objects shift.
If you click on the "More info on SIMBAD", you'll get the coordinates and perhaps some additional info.
Definitely not round at the shorter wavelengths. Hard to say whether it's because the object is a #galaxy or two objects very close.
Yes, you can see faint spiral arms in the visible--good catch.
It appears that a very mid-IR bright object is throwing off the image scaling, rendering the candidate invisible in WISE4
A satellite or asteroid #trail for sure.
I would mark this one as a clean candidate.
This is a bright star and is saturating the image in the shorter wavelengths--the spikes are from the diffraction of the telescope.
Our bias right now is that the perfect circular ones are the "most interesting", but we also want to find weirdos, in case they're cool!
If you feel that the bright source may be contaminated, selecting "multiple sources within circle" would work.
A clean candidate star will need to have a clear, near-round shape, so anything like this should be marked as "extended".
small shifts like that are probably due to slight misalignments in the images. To me the visible images look extended, maybe #galaxy.
This is tough case--the 22 micron image does look a bit odd. The size in the visible is due to the stars being bright.
Great catch!
The DSS2 images are taken from photographic plates...so that could have been a crack in the plate or similar.
Possibly, but that very bright object just outside the circle may be throwing the WISE photometry off, or the scaling on the images.