%0 Generic %1 magdis2017forming %A Magdis, Georgios E. %A Rigopoulou, D. %A Daddi, E. %A Bethermin, M. %A Feruglio, C. %A Sargent, M. %A Dannerbauer, H. %A Dickinson, M. %A Elbaz, D. %A Guijarro, C. Gomez %A Huang, J-S %A Toft, S. %A Valentino, F. %D 2017 %K dust forming galaxies gas star %T Dust and Gas in Star Forming Galaxies at z~3 - Extending Galaxy Uniformity to 11.5 Billion Years %U http://arxiv.org/abs/1705.06296 %X We present millimetre dust emission measurements of two Lyman Break Galaxies at z~3 and construct for the first time fully sampled infrared spectral energy distributions (SEDs), from mid-IR to the Rayleigh-Jeans tail, of individually detected, unlensed, UV-selected, main sequence (MS) galaxies at $z=3$. The SED modelling of the two sources confirms previous findings, based on stacked ensembles, of an increasing mean radiation field <U> with redshift, consistent with a rapidly decreasing gas metallicity in z > 2 galaxies. Complementing our study with CO3-2 emission line observations, we measure the molecular gas mass (M_H2) reservoir of the systems using three independent approaches: 1) CO line observations, 2) the dust to gas mass ratio vs metallicity relation and 3) a single band, dust emission flux on the Rayleigh-Jeans side of the SED. All techniques return consistent M_H2 estimates within a factor of ~2 or less, yielding gas depletion time-scales (tau_dep ~ 0.35 Gyrs) and gas-to-stellar mass ratios (M_H2/M* ~ 0.5-1) for our z~3 massive MS galaxies. The overall properties of our galaxies are consistent with trends and relations established at lower redshifts, extending the apparent uniformity of star-forming galaxies over the last 11.5 billion years.

@misc{magdis2017forming, abstract = {We present millimetre dust emission measurements of two Lyman Break Galaxies at z~3 and construct for the first time fully sampled infrared spectral energy distributions (SEDs), from mid-IR to the Rayleigh-Jeans tail, of individually detected, unlensed, UV-selected, main sequence (MS) galaxies at $z=3$. The SED modelling of the two sources confirms previous findings, based on stacked ensembles, of an increasing mean radiation field <U> with redshift, consistent with a rapidly decreasing gas metallicity in z > 2 galaxies. Complementing our study with CO[3-2] emission line observations, we measure the molecular gas mass (M_H2) reservoir of the systems using three independent approaches: 1) CO line observations, 2) the dust to gas mass ratio vs metallicity relation and 3) a single band, dust emission flux on the Rayleigh-Jeans side of the SED. All techniques return consistent M_H2 estimates within a factor of ~2 or less, yielding gas depletion time-scales (tau_dep ~ 0.35 Gyrs) and gas-to-stellar mass ratios (M_H2/M* ~ 0.5-1) for our z~3 massive MS galaxies. The overall properties of our galaxies are consistent with trends and relations established at lower redshifts, extending the apparent uniformity of star-forming galaxies over the last 11.5 billion years.}, added-at = {2017-05-19T10:05:34.000+0200}, author = {Magdis, Georgios E. and Rigopoulou, D. and Daddi, E. and Bethermin, M. and Feruglio, C. and Sargent, M. and Dannerbauer, H. and Dickinson, M. and Elbaz, D. and Guijarro, C. Gomez and Huang, J-S and Toft, S. and Valentino, F.}, biburl = {https://www.bibsonomy.org/bibtex/233d8f89f7291cfc257401168f879e760/miki}, description = {[1705.06296] Dust and Gas in Star Forming Galaxies at z~3 - Extending Galaxy Uniformity to 11.5 Billion Years}, interhash = {8afe133a722e30b753da77f2b9d52dd2}, intrahash = {33d8f89f7291cfc257401168f879e760}, keywords = {dust forming galaxies gas star}, note = {cite arxiv:1705.06296Comment: Accepted for publication at A&A}, timestamp = {2017-05-19T10:05:34.000+0200}, title = {Dust and Gas in Star Forming Galaxies at z~3 - Extending Galaxy Uniformity to 11.5 Billion Years}, url = {http://arxiv.org/abs/1705.06296}, year = 2017 }