Giant molecular association in spiral arms of M 31: Evidence for dense gas formation via spiral shock associated with density waves?

Tosaki, T., Shioya, Y., Kuno, N., Hasegawa, T., Nakanishi, K., Matsushita, S., & Kohno, K. (2008). Giant molecular association in spiral arms of M 31: Evidence for dense gas formation via spiral shock associated with density waves? In Astrophysics and Space Science Proceedings (Vol. 0, p. 382). Springer Science and Business Media B.V. https://doi.org/10.1007/978-0-387-72768-4_118