by Brigit » Fri Feb 03, 2023 10:51 pm
BeAChooser says »
Tue Jan 31, 2023 "The star is HR 8799 and it’s 133 light years away. The planets are gas giants, bigger than Jupiter. The closest one take 45 years to complete an orbit.
Now how this is useful to know is your guess."
The first question is "What type of star is HR 8799?"
And what instruments and what wavelengths were used to observe it?
What is that global stellar emission, and what is triggering it?
Are these orbiting companions, or are they gas giants , or have there been corrections to the images, to obtain a modelled result of circular movement around the central star ? Or any other modifications that have been incorporated into the images ?
Are there faint indications of nested shells in the image ?
Do the planetary orbits have resonances ?
All sincere questions, btw. I miss Stephen Smith.
BeAChooser says »
Tue Jan 31, 2023 [i]"The star is HR 8799 and it’s 133 light years away. The planets are gas giants, bigger than Jupiter. The closest one take 45 years to complete an orbit.
Now how this is useful to know is your guess." [/i]
The first question is "What type of star is HR 8799?"
And what instruments and what wavelengths were used to observe it?
What is that global stellar emission, and what is triggering it?
Are these orbiting companions, or are they gas giants , or have there been corrections to the images, to obtain a modelled result of circular movement around the central star ? Or any other modifications that have been incorporated into the images ?
Are there faint indications of nested shells in the image ?
Do the planetary orbits have resonances ?
All sincere questions, btw. I miss Stephen Smith.