Timeline for What type of information can be gathered from a plot of brightness against wavelength?
Current License: CC BY-SA 3.0
11 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 25, 2018 at 8:25 | history | edited | Don_S |
Added new tag 'spectroscopy'.
|
|
| Mar 7, 2018 at 13:18 | comment | added | uhoh | @gerrit since it sounded familliar, I went looking and found I've recently written both the terms radiance as well as spectral radiance recently. A half-dozen more times and I'll remember it if I'm lucky ;-) | |
| Mar 6, 2018 at 19:31 | history | tweeted | twitter.com/StackSpaceExp/status/971106103697297408 | ||
| Mar 6, 2018 at 15:52 | comment | added | gerrit | @uhoh Excellent. So Jy/arcsec² is just another unit of spectral radiance, then. Then why label the y-axis brightness? Astronomers! ;-) | |
| Mar 6, 2018 at 15:20 | comment | added | Don_S | @uhoh, yes it does make sense, I have seen it in other papers in the same context, I just wasn't sure about it here. | |
| Mar 6, 2018 at 15:19 | comment | added | uhoh | It looks like Jy/arcsec^2 which would make sense if it was surface brightness for a resolved object. | |
| Mar 6, 2018 at 15:16 | comment | added | uhoh | @gerrit the Jy should be Jansky 1 Jy is 1E-26 Watts/Hz/m^2 at the measurement site. But I can't understand the rest of the legend i.sstatic.net/Rxvl8.png Here are some slides of the same title and the same plot is there on page 9. Perhaps this helps? Oh! A downloadable copy is available in Researchgate as well. | |
| Mar 6, 2018 at 14:34 | answer | added | gerrit | timeline score: 7 | |
| Mar 6, 2018 at 14:30 | comment | added | gerrit | I know spectroscopy, but I'm used to radiance units or brightness temperature. The logarithmic axis and shape reminds me of opacity, but that's unitless. | |
| Mar 6, 2018 at 13:34 | history | edited | Don_S | CC BY-SA 3.0 |
edited title
|
| Mar 6, 2018 at 13:27 | history | asked | Don_S | CC BY-SA 3.0 |
