%0 Generic %1 bethermin2016interstellar %A Béthermin, M. %A De Breuck, C. %A Gullberg, B. %A Aravena, M. %A Bothwell, M. S. %A Chapman, S. C. %A Gonzalez, A. H. %A Greve, T. R. %A Litke, K. %A Ma, J. %A Malkan, M. %A Marrone, D. P. %A Murphy, E. J. %A Spilker, J. S. %A Stark, A. A. %A Strandet, M. %A Vieira, J. D. %A Weiß, A. %A Welikala, N. %D 2016 %K alma emission high-z ism lines %T An ALMA view of the interstellar medium of the z=4.77 lensed starburst SPT-S J213242-5802.9 %U http://arxiv.org/abs/1601.01682 %X We present ALMA detections of the NII 205$\mu$m and CO(12-11) emission lines, and the tentative detection of CI $^3$P$_1$ - $^3$P$_0$ for the strongly lensed ($\mu$=5.7$\pm$0.5) dusty, star-forming galaxy SPT-S J213242-5802.9 (hereafter SPT2132-58) at z=4.77. The NII and CO(12-11) lines are detected at 11.5 and 8.5 $\sigma$ level, respectively, by our band-6 observations. The CI line is detected at 3.2 $\sigma$ after a re-analysis of existing band-3 data. The CI luminosity implies a gas mass of 3.8$\pm$1.2$\times$10$^10$ M$_ødot$, and consequently a very short depletion timescale of 3$\pm$6 Myr and a CO-luminosity-to-gas-mass conversion factor $\alpha_CO$ of 1.0$\pm$0.3 M$_ødot$ (K km s$^-1$ pc$^2$)$^-1$. SPT2132-58 is an extreme starburst with an intrinsic star formation rate of 1100$\pm$200 M$_ødot$/yr. We find a CII/NII ratio of 34$\pm$13, which is the highest reported at z$>$4. This suggests that SPT2132-58 hosts an evolved interstellar medium (0.5 Z$_ødot$<Z<1.5 Z$_ødot$), which may be dominated by photodissociation regions. The CO(2-1) and CO(5-4) transitions have lower CO-to-far-infrared ratios than local and high-redshift samples, while CO(12-11) is similar to these samples, suggesting the presence of an additional very excited component or an AGN.

@misc{bethermin2016interstellar, abstract = {We present ALMA detections of the [NII] 205$\mu$m and CO(12-11) emission lines, and the tentative detection of [CI] $^3$P$_1$ - $^3$P$_0$ for the strongly lensed ($\mu$=5.7$\pm$0.5) dusty, star-forming galaxy SPT-S J213242-5802.9 (hereafter SPT2132-58) at z=4.77. The [NII] and CO(12-11) lines are detected at 11.5 and 8.5 $\sigma$ level, respectively, by our band-6 observations. The [CI] line is detected at 3.2 $\sigma$ after a re-analysis of existing band-3 data. The [CI] luminosity implies a gas mass of 3.8$\pm$1.2$\times$10$^{10}$ M$_\odot$, and consequently a very short depletion timescale of 3$\pm$6 Myr and a CO-luminosity-to-gas-mass conversion factor $\alpha_{\rm CO}$ of 1.0$\pm$0.3 M$_\odot$ (K km s$^{-1}$ pc$^{2}$)$^{-1}$. SPT2132-58 is an extreme starburst with an intrinsic star formation rate of 1100$\pm$200 M$_\odot$/yr. We find a [CII]/[NII] ratio of 34$\pm$13, which is the highest reported at z$>$4. This suggests that SPT2132-58 hosts an evolved interstellar medium (0.5 Z$_\odot$<Z<1.5 Z$_\odot$), which may be dominated by photodissociation regions. The CO(2-1) and CO(5-4) transitions have lower CO-to-far-infrared ratios than local and high-redshift samples, while CO(12-11) is similar to these samples, suggesting the presence of an additional very excited component or an AGN.}, added-at = {2016-01-11T10:43:01.000+0100}, author = {Béthermin, M. and De Breuck, C. and Gullberg, B. and Aravena, M. and Bothwell, M. S. and Chapman, S. C. and Gonzalez, A. H. and Greve, T. R. and Litke, K. and Ma, J. and Malkan, M. and Marrone, D. P. and Murphy, E. J. and Spilker, J. S. and Stark, A. A. and Strandet, M. and Vieira, J. D. and Weiß, A. and Welikala, N.}, biburl = {https://www.bibsonomy.org/bibtex/29ffcf7e90e25fd6a112cdc9c7cc687c5/miki}, description = {[1601.01682] An ALMA view of the interstellar medium of the z=4.77 lensed starburst SPT-S J213242-5802.9}, interhash = {150cd4637b65ed30ca50efc8538f422f}, intrahash = {9ffcf7e90e25fd6a112cdc9c7cc687c5}, keywords = {alma emission high-z ism lines}, note = {cite arxiv:1601.01682Comment: 5 pages, 5 figures, 1 table, Accepted by A&A}, timestamp = {2016-01-11T10:43:01.000+0100}, title = {An ALMA view of the interstellar medium of the z=4.77 lensed starburst SPT-S J213242-5802.9}, url = {http://arxiv.org/abs/1601.01682}, year = 2016 }