%0 Generic %1 Eldridge2011 %A Eldridge, John J. %D 2011 %K cluster ha imf sfr %T The effect of stochastic star-formation, a variable stellar upper mass limit and binaries on star-formation rate indicators %U http://arxiv.org/abs/1106.4311 %X Using our binary population and spectral synthesis code, BPASS, we explore the effect of stochastically filling the stellar initial mass function, a variable stellar upper mass limit and binaries on star-formation rate indicators derived from the spectra of young clusters and star-forming galaxies. We compare our synthetic stellar populations to observations of H-alpha emission from isolated clusters and H-alpha and FUV observations of galaxies. We find that observations of clusters tend to favour a pure stochastic sampling of the initial mass function, rather than the maximum stellar mass being dependant on the total cluster mass. We also find that binaries make observational details of a stellar populations less susceptible to the stochastic effects of how the initial-mass function is filled. This is due to mass-transfer and stellar mergers in binaries creating more massive stars then created initially.

@misc{Eldridge2011, abstract = { Using our binary population and spectral synthesis code, BPASS, we explore the effect of stochastically filling the stellar initial mass function, a variable stellar upper mass limit and binaries on star-formation rate indicators derived from the spectra of young clusters and star-forming galaxies. We compare our synthetic stellar populations to observations of H-alpha emission from isolated clusters and H-alpha and FUV observations of galaxies. We find that observations of clusters tend to favour a pure stochastic sampling of the initial mass function, rather than the maximum stellar mass being dependant on the total cluster mass. We also find that binaries make observational details of a stellar populations less susceptible to the stochastic effects of how the initial-mass function is filled. This is due to mass-transfer and stellar mergers in binaries creating more massive stars then created initially. }, added-at = {2011-06-23T16:19:12.000+0200}, author = {Eldridge, John J.}, biburl = {https://www.bibsonomy.org/bibtex/2f2a8f3adac744a9810831118a588842a/miki}, description = {[1106.4311] The effect of stochastic star-formation, a variable stellar upper mass limit and binaries on star-formation rate indicators}, interhash = {c3b43cce41419bba2d6dcdb0dac63f02}, intrahash = {f2a8f3adac744a9810831118a588842a}, keywords = {cluster ha imf sfr}, note = {cite arxiv:1106.4311Comment: Submitted to MNRAS, 8 pages, 5 figures, Figures 1 & 2 low resolution figures, comments welcome}, timestamp = {2011-06-23T16:19:12.000+0200}, title = {The effect of stochastic star-formation, a variable stellar upper mass limit and binaries on star-formation rate indicators}, url = {http://arxiv.org/abs/1106.4311}, year = 2011 }