Star Effects
Star Effects in the Stellaris encyclopedia: The bonus granted depends on the star class of your capital system:
Star Effects in the game's words
The encyclopedia entry as the game shows it in its tooltips; underlined words open their own entry or page here.
The bonus granted depends on the star class of your capital system:
- Class B: +75 Alloys
- Class A: +150 Consumer Goods
- Class F: +300 Food
- Class G: +300 
Energy
- Class K: +300 
Minerals
- Class M: +30 
Rare Crystals
- Red Giant: +15 Living Metal
- Brown Dwarf: +30 
Volatile Motes
- Pulsar: +15 Zro
- Black Hole: +15 Dark Matter
- Neutron Star: +15 Nanites
- Viridescent Lightbringer: +30 
Exotic Gases
- Ancient Rift: +15 
Astral Threads
Binary and trinary systems grant the combined effects of their component star types.
Source: common/game_concepts (concept_vacuum_flower_star_effects) and localisation/english, Stellaris Cygnus v4.5.2 (9776).