  Software is a critical part of modern research, and yet there are
insufficient mechanisms in the scholarly ecosystem to acknowledge, cite, and
measure the impact of research software. The majority of academic fields rely
on a one-dimensional credit model whereby academic articles (and their
associated citations) are the dominant factor in the success of a researcher's
career. In the petabyte era of astronomical science, citing software and
measuring its impact enables academia to retain and reward researchers that
make significant software contributions. These highly skilled researchers must
be retained to maximize the scientific return from petabyte-scale datasets.
Evolving beyond the one-dimensional credit model requires overcoming several
key challenges, including the current scholarly ecosystem and scientific
culture issues. This white paper will present these challenges and suggest
practical solutions for elevating the role of software as a product of the
research enterprise.
