%0 Generic %1 ryon2014snapshot %A Ryon, J. E. %A Adamo, A. %A Bastian, N. %A Smith, L. J. %A Gallagher III, J. S. %A Konstantopoulos, I. S. %A Larsen, S. %A Silva-Villa, E. %A Zackrisson, E. %D 2014 %K cluster population star %T The Snapshot Hubble U-Band Cluster Survey (SHUCS) II. Star Cluster Population of NGC 2997 %U http://arxiv.org/abs/1405.5881 %X We study the star cluster population of NGC 2997, a giant spiral galaxy located at 9.5 Mpc and targeted by the Snapshot Hubble U-band Cluster Survey (SHUCS). Combining our U-band imaging from SHUCS with archival BVI imaging from HST, we select a high confidence sample of clusters in the circumnuclear ring and disk through a combination of automatic detection procedures and visual inspection. The cluster luminosity functions in all four filters can be approximated by power-laws with indices of $-1.7$ to $-2.3$. Some deviations from pure power-law shape are observed, hinting at the presence of a high-mass truncation in the cluster mass function. However, upon inspection of the cluster mass function, we find it is consistent with a pure power-law of index $-2.2\pm0.2$ despite a slight bend at $\sim$$2.5\times10^4$ M$_ødot$. No statistically significant truncation is observed. From the cluster age distributions, we find a low rate of disruption ($\zeta\sim-0.1$) in both the disk and circumnuclear ring. Finally, we estimate the cluster formation efficiency ($\Gamma$) over the last 100 Myr in each region, finding $7\pm2$% for the disk, $12\pm4$% for the circumnuclear ring, and $10\pm3$% for the entire UBVI footprint. This study highlights the need for wide-field UBVI coverage of galaxies to study cluster populations in detail, though a small sample of clusters can provide significant insight into the characteristics of the population.

@misc{ryon2014snapshot, abstract = {We study the star cluster population of NGC 2997, a giant spiral galaxy located at 9.5 Mpc and targeted by the Snapshot Hubble U-band Cluster Survey (SHUCS). Combining our U-band imaging from SHUCS with archival BVI imaging from HST, we select a high confidence sample of clusters in the circumnuclear ring and disk through a combination of automatic detection procedures and visual inspection. The cluster luminosity functions in all four filters can be approximated by power-laws with indices of $-1.7$ to $-2.3$. Some deviations from pure power-law shape are observed, hinting at the presence of a high-mass truncation in the cluster mass function. However, upon inspection of the cluster mass function, we find it is consistent with a pure power-law of index $-2.2\pm0.2$ despite a slight bend at $\sim$$2.5\times10^{4}$ M$_{\odot}$. No statistically significant truncation is observed. From the cluster age distributions, we find a low rate of disruption ($\zeta\sim-0.1$) in both the disk and circumnuclear ring. Finally, we estimate the cluster formation efficiency ($\Gamma$) over the last 100 Myr in each region, finding $7\pm2$% for the disk, $12\pm4$% for the circumnuclear ring, and $10\pm3$% for the entire UBVI footprint. This study highlights the need for wide-field UBVI coverage of galaxies to study cluster populations in detail, though a small sample of clusters can provide significant insight into the characteristics of the population.}, added-at = {2014-05-26T11:36:37.000+0200}, author = {Ryon, J. E. and Adamo, A. and Bastian, N. and Smith, L. J. and Gallagher III, J. S. and Konstantopoulos, I. S. and Larsen, S. and Silva-Villa, E. and Zackrisson, E.}, biburl = {https://www.bibsonomy.org/bibtex/26d90380c6447e84ecba161548e3975cb/miki}, description = {[1405.5881] The Snapshot Hubble U-Band Cluster Survey (SHUCS) II. Star Cluster Population of NGC 2997}, interhash = {b87afb623e4017a688085db57e96ed26}, intrahash = {6d90380c6447e84ecba161548e3975cb}, keywords = {cluster population star}, note = {cite arxiv:1405.5881Comment: 31 pages, 9 figures, accepted to the AJ}, timestamp = {2014-05-26T11:36:37.000+0200}, title = {The Snapshot Hubble U-Band Cluster Survey (SHUCS) II. Star Cluster Population of NGC 2997}, url = {http://arxiv.org/abs/1405.5881}, year = 2014 }