%0 Generic %1 citeulike:13586848 %A Brandt, Timothy D. %A Huang, Chelsea X. %D 2015 %K imported %T Rotating Stellar Models Can Account for the Extended Main Sequence Turnoffs in Intermediate Age Clusters %U http://arxiv.org/abs/1504.04375 %X We show that the extended main sequence turnoffs seen in intermediate age Large Magellanic Cloud (LMC) clusters, often attributed to age spreads of several hundred Myr, may be easily accounted for by variable stellar rotation in a coeval population. We compute synthetic photometry for grids of rotating stellar evolution models and interpolate them to produce isochrones at a variety of rotation rates and orientations. An extended main sequence turnoff naturally appears in color-magnitude diagrams at ages just under 1 Gyr, peaks in extent between \~1 and 1.5 Gyr, and gradually disappears at around 2 Gyr in age. We then fit our interpolated isochrones by eye to four LMC clusters with very extended main sequence turnoffs: NGC 1783, 1806, 1846, and 1987. In each case, stellar populations with a single age and metallicity can comfortably account for the observed extent of the turnoff region.

@misc{citeulike:13586848, abstract = {{We show that the extended main sequence turnoffs seen in intermediate age Large Magellanic Cloud (LMC) clusters, often attributed to age spreads of several hundred Myr, may be easily accounted for by variable stellar rotation in a coeval population. We compute synthetic photometry for grids of rotating stellar evolution models and interpolate them to produce isochrones at a variety of rotation rates and orientations. An extended main sequence turnoff naturally appears in color-magnitude diagrams at ages just under 1 Gyr, peaks in extent between \~{}1 and 1.5 Gyr, and gradually disappears at around 2 Gyr in age. We then fit our interpolated isochrones by eye to four LMC clusters with very extended main sequence turnoffs: NGC 1783, 1806, 1846, and 1987. In each case, stellar populations with a single age and metallicity can comfortably account for the observed extent of the turnoff region.}}, added-at = {2019-03-25T08:20:55.000+0100}, archiveprefix = {arXiv}, author = {Brandt, Timothy D. and Huang, Chelsea X.}, biburl = {https://www.bibsonomy.org/bibtex/20a5f3f04fbbc7750264b4785ad94983a/ericblackman}, citeulike-article-id = {13586848}, citeulike-linkout-0 = {http://arxiv.org/abs/1504.04375}, citeulike-linkout-1 = {http://arxiv.org/pdf/1504.04375}, day = 16, eprint = {1504.04375}, interhash = {268fcd0f845394c0dc2683946bb2e20d}, intrahash = {0a5f3f04fbbc7750264b4785ad94983a}, keywords = {imported}, month = apr, posted-at = {2015-04-20 04:49:22}, priority = {2}, timestamp = {2019-03-25T08:20:55.000+0100}, title = {{Rotating Stellar Models Can Account for the Extended Main Sequence Turnoffs in Intermediate Age Clusters}}, url = {http://arxiv.org/abs/1504.04375}, year = 2015 }