%0 Generic %1 klitsch2017almacal %A Klitsch, A. %A Peroux, C. %A Zwaan, M. A. %A Smail, I. %A Oteo, I. %A Biggs, A. D. %A Popping, G. %A Swinbank, A. M. %D 2017 %K ALMA DLA MUSE %T ALMACAL III: A combined ALMA and MUSE Survey for Neutral, Molecular, and Ionised Gas in an HI-Absorption-Selected System %U http://arxiv.org/abs/1712.00014 %X Studying the flow of baryons into and out of galaxies is an important part of understanding the evolution of galaxies over time. We present a detailed case study of the environment around an intervening Ly $\alpha$ absorption line system at $z_abs = 0.633$, seen towards the quasar J0423$-$0130 ($z_\rm QSO = 0.915$). We detect with ALMA the $^12$CO(2--1), $^12$CO(3--2) and $1.2$~mm continuum emission from a galaxy at the redshift of the Ly $\alpha$ absorber at a projected distance of $135$ kpc. From the ALMA detections, we infer ISM conditions similar to those in low redshift Luminous Infrared Galaxies. DDT MUSE integral field unit observations reveal the optical counterpart of the $^12$CO emission line source and three additional emission line galaxies at the absorber redshift, which together form a galaxy group. The $^12$CO emission line detections originate from the most massive galaxy in this group. While we cannot exclude that we miss a fainter host, we reach a dust-uncorrected star-formation rate (SFR) limit of > $0.3 M_ødot yr^-1$ within $100$ kpc from the sightline to the background quasar. We measure the dust-corrected SFR (ranging from $3$ to $50$ M$_ødot$ yr$^-1$), the morpho-kinematics and the metallicities of the four group galaxies to understand the relation between the group and the neutral gas probed in absorption. We find that the Ly $\alpha$ absorber traces either an outflow from the most massive galaxy or intra-group gas. This case study illustrates the power of combining ALMA and MUSE to obtain a census of the cool baryons in a bounded structure at intermediate redshift.

@misc{klitsch2017almacal, abstract = {Studying the flow of baryons into and out of galaxies is an important part of understanding the evolution of galaxies over time. We present a detailed case study of the environment around an intervening Ly $\alpha$ absorption line system at $z_{\rm abs} = 0.633$, seen towards the quasar J0423$-$0130 ($z_{\rm QSO} = 0.915$). We detect with ALMA the $^{12}$CO(2--1), $^{12}$CO(3--2) and $1.2$~mm continuum emission from a galaxy at the redshift of the Ly $\alpha$ absorber at a projected distance of $135$ kpc. From the ALMA detections, we infer ISM conditions similar to those in low redshift Luminous Infrared Galaxies. DDT MUSE integral field unit observations reveal the optical counterpart of the $^{12}$CO emission line source and three additional emission line galaxies at the absorber redshift, which together form a galaxy group. The $^{12}$CO emission line detections originate from the most massive galaxy in this group. While we cannot exclude that we miss a fainter host, we reach a dust-uncorrected star-formation rate (SFR) limit of > $0.3 \text{M}_{\odot} \text{ yr}^{-1}$ within $100$ kpc from the sightline to the background quasar. We measure the dust-corrected SFR (ranging from $3$ to $50$ M$_{\odot}$ yr$^{-1}$), the morpho-kinematics and the metallicities of the four group galaxies to understand the relation between the group and the neutral gas probed in absorption. We find that the Ly $\alpha$ absorber traces either an outflow from the most massive galaxy or intra-group gas. This case study illustrates the power of combining ALMA and MUSE to obtain a census of the cool baryons in a bounded structure at intermediate redshift.}, added-at = {2017-12-04T10:27:07.000+0100}, author = {Klitsch, A. and Peroux, C. and Zwaan, M. A. and Smail, I. and Oteo, I. and Biggs, A. D. and Popping, G. and Swinbank, A. M.}, biburl = {https://www.bibsonomy.org/bibtex/26a1b5c1cd323930bb54c4d666f84bdb0/miki}, description = {[1712.00014] ALMACAL III: A combined ALMA and MUSE Survey for Neutral, Molecular, and Ionised Gas in an HI-Absorption-Selected System}, interhash = {7a2d544c883283b94e2a9e67fe29a06c}, intrahash = {6a1b5c1cd323930bb54c4d666f84bdb0}, keywords = {ALMA DLA MUSE}, note = {cite arxiv:1712.00014Comment: 17 pages, 9 figures, 9 tables, accepted for publication in MNRAS}, timestamp = {2017-12-04T10:27:07.000+0100}, title = {ALMACAL III: A combined ALMA and MUSE Survey for Neutral, Molecular, and Ionised Gas in an HI-Absorption-Selected System}, url = {http://arxiv.org/abs/1712.00014}, year = 2017 }