So with the spectroscopy we can determine density but how do we know exact size and mass of the star? 
Spectroscopy is all about reading between the lines 
Beyond temperature and composition, it can tell us about the density of stars, or even the motion of objects in space! Part 5 of @SpaceTelescope's #Spectroscopy101 series: https://bit.ly/3egUqWV pic.twitter.com/zpltVT3I9u
-
-
-
If I'm not mistaken it's from the wobbling by gravity of it's companion, also using H-R diagram for sorting color temp
End of conversation
New conversation -
-
-
i see wider gaps between the bands in the white dwarf, but how does one learn to know the shading?
Thanks. Twitter will use this to make your timeline better. UndoUndo
-
-
-
Would this instrument be capable of detecting the nearest planets? To confirm their atmospheric composition. Is it enough to wait for a star to pass through?
Thanks. Twitter will use this to make your timeline better. UndoUndo
-
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.