%0 Generic %1 Cannon2011 %A Cannon, John M. %A Most, Hans P. %A Skillman, Evan D. %A Weisz, Daniel R. %A Cook, David %A Dolphin, Andrew E. %A Kennicutt, Robert C. %A Jr., %A Lee, Janice %A Seth, Anil %A Walter, Fabian %A Warren, Steven R. %D 2011 %K HI feedback ism %T The M81 Group Dwarf Irregular Galaxy DDO 165. II. Connecting Recent Star Formation with ISM Structures and Kinematics %U http://arxiv.org/abs/1104.0465 %X We compare the stellar populations and complex neutral gas dynamics of the M81 group dIrr galaxy DDO 165 using data from the HST and the VLA. Paper I identified two kinematically distinct HI components, multiple localized high velocity gas features, and eight HI holes and shells (the largest of which spans ~2.2x1.1 kpc). Using the spatial and temporal information from the stellar populations in DDO 165, we compare the patterns of star formation over the past 500 Myr with the HI dynamics. We extract localized star formation histories within 6 of the 8 HI holes identified in Paper I, as well as 23 other regions that sample a range of stellar densities and neutral gas properties. From population synthesis modeling, we derive the energy outputs (from stellar winds and supernovae) of the stellar populations within these regions over the last 100 Myr, and compare with refined estimates of the energies required to create the HI holes. In all cases, we find that "feedback" is energetically capable of creating the observed structures in the ISM. Numerous regions with significant energy inputs from feedback lack coherent HI structures but show prominent localized high velocity gas features; this feedback signature is a natural product of temporally and spatially distributed star formation. In DDO 165, the extended period of heightened star formation activity (lasting more than 1 Gyr) is energetically capable of creating the observed holes and high velocity gas features in the neutral ISM.

@misc{Cannon2011, abstract = { We compare the stellar populations and complex neutral gas dynamics of the M81 group dIrr galaxy DDO 165 using data from the HST and the VLA. Paper I identified two kinematically distinct HI components, multiple localized high velocity gas features, and eight HI holes and shells (the largest of which spans ~2.2x1.1 kpc). Using the spatial and temporal information from the stellar populations in DDO 165, we compare the patterns of star formation over the past 500 Myr with the HI dynamics. We extract localized star formation histories within 6 of the 8 HI holes identified in Paper I, as well as 23 other regions that sample a range of stellar densities and neutral gas properties. From population synthesis modeling, we derive the energy outputs (from stellar winds and supernovae) of the stellar populations within these regions over the last 100 Myr, and compare with refined estimates of the energies required to create the HI holes. In all cases, we find that "feedback" is energetically capable of creating the observed structures in the ISM. Numerous regions with significant energy inputs from feedback lack coherent HI structures but show prominent localized high velocity gas features; this feedback signature is a natural product of temporally and spatially distributed star formation. In DDO 165, the extended period of heightened star formation activity (lasting more than 1 Gyr) is energetically capable of creating the observed holes and high velocity gas features in the neutral ISM. }, added-at = {2011-04-05T18:09:35.000+0200}, author = {Cannon, John M. and Most, Hans P. and Skillman, Evan D. and Weisz, Daniel R. and Cook, David and Dolphin, Andrew E. and Kennicutt, Robert C. and Jr. and Lee, Janice and Seth, Anil and Walter, Fabian and Warren, Steven R.}, biburl = {https://www.bibsonomy.org/bibtex/2d062b00653fe88260ae298852224898d/miki}, description = {[1104.0465] The M81 Group Dwarf Irregular Galaxy DDO 165. II. Connecting Recent Star Formation with ISM Structures and Kinematics}, interhash = {74cf263895f84de4f18319ad4a5af1c1}, intrahash = {d062b00653fe88260ae298852224898d}, keywords = {HI feedback ism}, note = {cite arxiv:1104.0465 Comment: The Astrophysical Journal, in press. Full-resolution version available on request from the first author}, timestamp = {2011-04-05T18:09:35.000+0200}, title = {The M81 Group Dwarf Irregular Galaxy DDO 165. II. Connecting Recent Star Formation with ISM Structures and Kinematics}, url = {http://arxiv.org/abs/1104.0465}, year = 2011 }