Timeline for How far can a star's visual colour deviate from black body radiation?
Current License: CC BY-SA 4.0
9 events
| when toggle format | what | by | license | comment | |
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| Sep 21, 2021 at 6:08 | comment | added | TazAstroSpacial | To answer the opposite question: How close to a blackbody can a stars spectrum be? see iopscience.iop.org/article/10.3847/1538-3881/aac88b. From aasnova.org/2018/10/31/perfect-blackbodies-in-the-sky. | |
| Sep 8, 2021 at 10:07 | comment | added | Alchimista | I think one should focus on a level more intrinsic to the stars. Otherwise there could be dramatic changes, like at sunset. | |
| Sep 5, 2021 at 19:47 | comment | added | Ingolifs | @uhoh I guess what is observed from earth. | |
| Sep 5, 2021 at 10:17 | comment | added | uhoh | Interesting question! If a star is inside other material for which it is formed, do you ask about the spectrum of light exiting the photosphere, or being observed at Earth? | |
| Sep 5, 2021 at 0:43 | comment | added | Ingolifs | @fasterthanlight I know, but isn't that colour a dim red? In order to appear purple it would have to emit a decent quantity of blue light in the first place. | |
| Sep 4, 2021 at 23:17 | comment | added | WarpPrime | Brown dwarfs can shine on their own, if not for a few hundred million years | |
| Sep 4, 2021 at 23:06 | comment | added | Ingolifs | @fasterthanlight Good point about the sunspots. Re: brown dwarfs - I was under the impression that brown dwarfs only appear magenta when they're lit up by some other light source. | |
| Sep 4, 2021 at 23:03 | comment | added | WarpPrime | You are correct, absorption/emission lines can alter colors. Also sunspots can cause slight deviations if you take the mean of all it’s colors. At brown-dwarf temperatures, emission lines and atmospheric composition dominates blackbody radiation, hence many brown dwarfs can be magenta, for instance | |
| Sep 4, 2021 at 22:42 | history | asked | Ingolifs | CC BY-SA 4.0 |