%0 Generic %1 nesvadba2016plancks %A Nesvadba, N. %A Kneissl, R. %A Canameras, R. %A Boone, F. %A Falgarone, E. %A Frye, B. %A Gerin, M. %A Koenig, S. %A Lagache, G. %A Floc'h, E. Le %A Malhotra, S. %A Scott, D. %D 2016 %K absorption alma emission %R 10.1051/0004-6361/201629037 %T Planck's Dusty GEMS. II. Extended CII emission and absorption in the Garnet at z=3.4 seen with ALMA %U http://arxiv.org/abs/1610.01169 %X We present spatially resolved ALMA CII observations of the bright (flux density S=400 mJy at 350 microns), gravitationally lensed, starburst galaxy PLCK G045.1+61.1 at z=3.427, the "Garnet". This source is part of our set of "Planck's Dusty GEMS", discovered with the Planck's all-sky survey. Two emission-line clouds with a relative velocity offset of ~600 km/s extend towards north-east and south-west, respectively, of a small, intensely star-forming clump with a star-formation intensity of 220 Msun/yr/kpc^2, akin to maximal starbursts. CII is also seen in absorption, with a redshift of +350 km/s relative to the brightest CO component. CII absorption has previously only been found in the Milky Way along sightlines toward bright high-mass star-forming regions, and this is the first detection in another galaxy. Similar to Galactic environments, the CII absorption feature is associated with CI emission, implying that this is diffuse gas shielded from the UV radiation of the clump, and likely at large distances from the clump. Since absorption can only be seen in front of a continuum source, the gas in this structure can definitely be attributed to gas flowing towards the clump. The absorber could be part of a cosmic filament or merger debris being accreted onto the galaxy. We discuss our results also in light of the on-going debate of the origin of the CII deficit in dusty star-forming galaxies.

@misc{nesvadba2016plancks, abstract = {We present spatially resolved ALMA [CII] observations of the bright (flux density S=400 mJy at 350 microns), gravitationally lensed, starburst galaxy PLCK G045.1+61.1 at z=3.427, the "Garnet". This source is part of our set of "Planck's Dusty GEMS", discovered with the Planck's all-sky survey. Two emission-line clouds with a relative velocity offset of ~600 km/s extend towards north-east and south-west, respectively, of a small, intensely star-forming clump with a star-formation intensity of 220 Msun/yr/kpc^2, akin to maximal starbursts. [CII] is also seen in absorption, with a redshift of +350 km/s relative to the brightest CO component. [CII] absorption has previously only been found in the Milky Way along sightlines toward bright high-mass star-forming regions, and this is the first detection in another galaxy. Similar to Galactic environments, the [CII] absorption feature is associated with [CI] emission, implying that this is diffuse gas shielded from the UV radiation of the clump, and likely at large distances from the clump. Since absorption can only be seen in front of a continuum source, the gas in this structure can definitely be attributed to gas flowing towards the clump. The absorber could be part of a cosmic filament or merger debris being accreted onto the galaxy. We discuss our results also in light of the on-going debate of the origin of the [CII] deficit in dusty star-forming galaxies.}, added-at = {2016-10-06T10:25:25.000+0200}, author = {Nesvadba, N. and Kneissl, R. and Canameras, R. and Boone, F. and Falgarone, E. and Frye, B. and Gerin, M. and Koenig, S. and Lagache, G. and Floc'h, E. Le and Malhotra, S. and Scott, D.}, biburl = {https://www.bibsonomy.org/bibtex/22e3d3308117fd104bc7775de598a1e91/miki}, description = {[1610.01169] Planck's Dusty GEMS. II. Extended [CII] emission and absorption in the Garnet at z=3.4 seen with ALMA}, doi = {10.1051/0004-6361/201629037}, interhash = {94d244279959ccf32fd7b64d44555a22}, intrahash = {2e3d3308117fd104bc7775de598a1e91}, keywords = {absorption alma emission}, note = {cite arxiv:1610.01169Comment: A&A 593, L2}, timestamp = {2016-10-06T10:25:25.000+0200}, title = {Planck's Dusty GEMS. II. Extended [CII] emission and absorption in the Garnet at z=3.4 seen with ALMA}, url = {http://arxiv.org/abs/1610.01169}, year = 2016 }