/sci/ - Science & Math

>>14703056
It's how filters are labelled on JWST. F is for filter. 200 means it's centred on 2 microns in wavelength. W means it's a wide broadband filter.
The fact that is disappears at short wavelengths is a possible indication that it's a dropout caused by the Lyman break. For the most distant galaxies these wavelengths correspond to light emitted in the far ultraviolet. Below a specific wavelength (Lyman alpha 121.6 nm) the hydrogen between galaxies strongly absorbs the light. This causes a dramatic break in the spectrum, which can be used to select these galaxies from imaging data.

>>14703056
It's how filters are labelled on JWST. F is for filter. 200 means it's centred on 2 microns in wavelength. W means it's a wide broadband filter.
The fact that is dispersers at short wavelengths is a possible indication that it's a dropout showing caused by the Lyman break. For the most distant galaxies these wavelengths correspond to light emitted in the far ultraviolet. Below a specific wavelength (Lyman alpha 121.6 nm) the hydrogen between galaxies strongly absorbs the light. This causes a dramatic break in the spectrum, which can be used to select these galaxies from imaging data.