Galaxy with 2 tails?

This galaxy seems to have 2 although faith, tidal tails?
It clearly had an encounter with the galaxy above

https://decaps.legacysurvey.org//viewer/?ra=133.9691&dec=0.7922&layer=hsc-dr2&zoom=15&ngc&sga&GCs-PNe

3 Likes

Looks like spiral arms that are elongated

2 Likes

Interesting Jim, what exactly differentiates tidal tails and spiral arms?

1 Like

usually tidal tails tend to be one direction and/or lack symmetry about the central galaxy. if the matter appears to have a fairly regular shape and distribution from the galaxy, they are usually spiral arms. This particular galaxy has unwinding spiral arms - this is usually caused by gravitational interaction with other bodies but it can also be due to ram pressure.

Here are other examples like this (link)

2 Likes

Thank you!

1 Like

Yeah I was going to say exactly what Belo said :innocent:

2 Likes