The Resolved Kennicutt-Schmidt Law in Nearby Galaxies Academic Article uri icon

abstract

  • AbstractThe Kennicutt-Schmidt law (Schmidt 1959; Kennicutt 1998, hereafter K-S law) is a power law correlation between area averaged star formation rate (SFR) and gas surface density (gas). Despite its importance, the physics that underlie this correlation has remained unclear. The power law index, N, is a prime discriminator of the mechanisms that regulate star formation and form the K-S law (e.g. Leroy et al. 2008; Tan 2010). We present a study of the resolved K-S law for 10 nearby disk galaxies using our new CO(1-0) data at 750 and 500 pc resolutions. The CO(1-0) line emission is established as a tracer of the molecular gas column density, and results in a super-linear correlation (N = 1.3 and 1.8). We discuss the cause of the discrepancy between previous studies, and the mechanism of star formation indicated from our new results.

published proceedings

  • Proceedings of the International Astronomical Union

author list (cited authors)

  • Momose, R., Koda, J., Kennicutt, R. C., Egusa, F., Okumura, S. K., Calzetti, D., ... Kuno, N.

citation count

  • 1

complete list of authors

  • Momose, R||Koda, J||Kennicutt, RC||Egusa, F||Okumura, SK||Calzetti, D||Liu, G||Meyer, J Donovan||Scoville, NZ||Sawada, T||Kuno, N

publication date

  • January 2012