Willis666
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True. Some features are on "tours" and so are labeled. The RA and DEC should be at the bottom of the screen for any point (unless that varies with version). Just knowing the constellation should help pin it down, as well.russ_watters said:Or see if Google labels it...
russ_watters said:Or see if Google labels it...
Arch2008 said:Well you have several features apparent. You have two jets, one red-shifted (pointed away from us) and one blue-shifted, where the ejecta is traveling towards us. The red blob at the left bottom has a visible dark break which is normally cooler dust that blocks light. Both of the red blobs could be ionized dust blown off of a star in polar opposite directions by magnetic forces. Large stars sometimes do this when they grow so large that their surface gravity is zero. Their outer layers then “fluff off” gradually and they may lose the mass of the Sun every few million years. The central star becomes obscured in a cloud of its own making. If it collapsed violently that would explain the jets.
However, what is the scale? Are we looking at a star or something else?
Fewmet said:Can you say something about how the surface gravity becomes zero?
I am surprised by the idea that the colors of the jets are from Doppler shifts. I don't know the calculation off hand, but can the material plausibly move fast enough to shift from appearing red to appearing blue? Or are you being metaphorical?
Thanks in advance.
russ_watters said:Guys - it's just a plain star that someone drew a pretty picture around. They all look like that on google sky map.
Arch2008 said:Fewmet a star is a contest between gravity crushing the star together and nuclear energy trying to blow it apart. Huge stars grow so large that at their surface the gravity is essentially canceled out by the outward pressure. So the surface gravity is negligible and the star continually loses mass.
http://isi.ssl.berkeley.edu/aavso_mira_information.htm
Arch2008 said:Depending on how the jets were formed, the ejecta could be moving at relativistic speeds and if the object is very far away then one jet should appear red shifted and the other blue shifted.
Arch2008 said:So the image could be a huge star that shed several solar masses of dust before collapsing and emitting the jets. The slower shockwave will eventually affect the clouds.
That or I am just totally freakin’ wrong.![]()