The Amateur Astronomer's Library

The article can be accessed from here -
http://arxiv.org/abs/0808.2611

Key features of the article.
1) All the diagrams have been put at the end of the article instead of in the appropriate position in the text. This is an annoying editorial convention!
2) J-K v Absolute magnitude are included.

OVERALL SCIRE - One Star

The article can be accessed from here -
http://arxiv.org/abs/1001.3402

Key features of this article.
1) Equations for calculating the absolute magnitude (Mi) using either (i-z)or (i-J) colours are given.
2) There are a number of colour/colour diagrams that separate early L from late L from T stars.
3) There are also tables of median colours for L and T dwarfs using various colour combinations.

OVERALL SCORE - Five Stars