rework introduction

Physics_Thesis_Template/main.tex

@@ -67,6 +67,8 @@
 \newcommand{\aj}{The Astronomical Journal}
 \newcommand{\aaps}{Astronomy and Astrophysics Supplement Series}
 \newcommand{\nat}{Nature}
+\newcommand{\pasj}{Publications of the Astronomical Society of Japan}
+\newcommand{\pasp}{Publications of the Astronomical Society of the Pacific}
 
 \usepackage{xspace}
 \newcommand{\Figure}[1]{Figure\,\ref{#1}\xspace}