Red Arcs
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drphilmarshall
scientist, admin
I've seen a couple of these go by now, so have started a new tag group "Objects Tagged as Red Arcs" http://talk.spacewarps.org/#/collections/CSWL000006 Gravitationally lensed galaxies that are red could either be dusty or distant, but either way they're interesting. Also, the robots that have been run on the CFHTLS images so far have, I believe, been optimized to look for blue arcs, to some extent at least. Great if we can spot some #redarcs! 😃
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drphilmarshall
scientist, admin
PS. The way to treat the tag group is, I think, as a pool of candidates that you can draw from when making your own collections: let's all speculate in the object comments using the hashtag, and then select the ones we actually believe could be lesed features into our own collections. Here's mine, for example: http://talk.spacewarps.org/#/collections/CSWS000hv8
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jtreisner
I'm guessing it's not, but on image ASW0007z5l
There is something at ~3 o'clock that looks like it could have a partial red arc. Opinions? The more I look at the more I doubt, but I figured I'd ask anyway.
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Budgieye
moderator
An arc would twice as far away as the lensing galaxy. So a red galaxy would most likely have a blue arc around it. This is probably a slightly more distant (more red) galaxy. But interesting though.
The colours of lensing and lensed galaxies
See http://talk.spacewarps.org/#/boards/BSW0000002/discussions/DSW000044z
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