The keywords

The keywords are often one word, but many of them are compound words separated by an underscore character. This is necessary to make a distinction between the properties of stars and clusters, as, for example, in star_evolution and cluster_evolution.

For NGC and IC clusters it is not necessary to enter NGC or IC, the cluster number is sufficient.

For anonymous clusters, the author's acronym and the cluster number form a single word. You need to start the name with an upper case letter.

Examples:

bib -a 87 2287: displays the bibliographiques references for NGC 2287
bib -a 93 Tr16: lists the references relevant to Trumpler 16