This answer seems to imply that it was a longbow.
Is there canon information on what kind of bow would Elves use? (and if so, was it different for different Elvish groups?)
This answer seems to imply that it was a longbow.
Is there canon information on what kind of bow would Elves use? (and if so, was it different for different Elvish groups?)
There is no one single type.
The Teleri in Valinor are described in the Silmarillion chapter Of the Flight of the Noldor:
For the Noldor were become fierce and desperate, and the Teleri had less strength, and were armed for the most part but with slender bows.
Beleg Strongbow has something a bit more substantial (from Of Túrin Turambar):
...they laid Beleg in a shallow grave, and placed beside him Belthronding his great bow, that was made of black yew-wood.
The difference between the bows of Mirkwood Elves and those of Lórien Elves is described at Galadriel's gift-giving in Lord of the Rings:
To Legolas she gave a bow such as the Galadhrim used, longer and stouter than the bows of Mirkwood, and strung with a string of elf-hair.
But in general Tolkien doesn't really describe this kind of level of detail, except where it's important to the plot. There are other references where only possession of a bow is mentioned without specification of type: "Fingon strung an arrow, and bent his bow", "Curufin, being filled with shame and malice, took the bow of Celegorm".