%0 Generic %1 schroetter2016megaflow %A Schroetter, Ilane %A Bouché, Nicolas %A Wendt, Martin %A Contini, Thierry %A Finley, Hayley %A Pello, Roser %A Bacon, Roland %A Cantalupo, Sebastiano %A Marino, Raffaella %A Richard, Johan %A Lilly, Simon %A Schaye, Joop %A Soto, Kurt %A Steinmetz, Matthias %A Straka, Lorrie A %A Wisotzki, Lutz %D 2016 %K MgII galaxies host muse %T MusE GAs FLOw and Wind (MEGAFLOW) I: First MUSE results on background quasars %U http://arxiv.org/abs/1605.03412 %X The physical properties of galactic winds are one of the keys to understand galaxy formation and evolution. These properties can be constrained thanks to background quasar lines of sight (LOS) passing near star-forming galaxies (SFGs). We present the first results of the MusE GAs FLOw and Wind (MEGAFLOW) survey obtained of 2 quasar fields which have 8 MgII absorbers of which 3 have rest-equivalent width greater than 0.8 \AA. With the new Multi Unit Spectroscopic Explorer (MUSE) spectrograph on the Very Large Telescope (VLT), we detect 6 (75$\%$) MgII host galaxy candidates withing a radius of 30 arcsec from the quasar LOS. Out of these 6 galaxy--quasar pairs, from geometrical arguments, one is likely probing galactic outflows, two are classified as ämbiguous", two are likely probing extended gaseous disks and one pair seems to be a merger. We focus on the wind$-$pair and constrain the outflow using a high resolution quasar spectra from Ultraviolet and Visual Echelle Spectrograph (UVES). Assuming the metal absorption to be due to gas flowing out of the detected galaxy through a cone along the minor axis, we find outflow velocities of the order of $\approx$ 150 km/s (i.e. smaller than the escape velocity) with a loading factor, $=M_out/$SFR, of $\approx$ 0.7. We see evidence for an open conical flow, with a low-density inner core. In the future, MUSE will provide us with about 80 multiple galaxy$-$quasar pairs in two dozen fields.

@misc{schroetter2016megaflow, abstract = {The physical properties of galactic winds are one of the keys to understand galaxy formation and evolution. These properties can be constrained thanks to background quasar lines of sight (LOS) passing near star-forming galaxies (SFGs). We present the first results of the MusE GAs FLOw and Wind (MEGAFLOW) survey obtained of 2 quasar fields which have 8 MgII absorbers of which 3 have rest-equivalent width greater than 0.8 \AA. With the new Multi Unit Spectroscopic Explorer (MUSE) spectrograph on the Very Large Telescope (VLT), we detect 6 (75$\%$) MgII host galaxy candidates withing a radius of 30 arcsec from the quasar LOS. Out of these 6 galaxy--quasar pairs, from geometrical arguments, one is likely probing galactic outflows, two are classified as "ambiguous", two are likely probing extended gaseous disks and one pair seems to be a merger. We focus on the wind$-$pair and constrain the outflow using a high resolution quasar spectra from Ultraviolet and Visual Echelle Spectrograph (UVES). Assuming the metal absorption to be due to gas flowing out of the detected galaxy through a cone along the minor axis, we find outflow velocities of the order of $\approx$ 150 km/s (i.e. smaller than the escape velocity) with a loading factor, $\eta =\dot M_{\rm out}/$SFR, of $\approx$ 0.7. We see evidence for an open conical flow, with a low-density inner core. In the future, MUSE will provide us with about 80 multiple galaxy$-$quasar pairs in two dozen fields.}, added-at = {2016-05-12T10:22:43.000+0200}, author = {Schroetter, Ilane and Bouché, Nicolas and Wendt, Martin and Contini, Thierry and Finley, Hayley and Pello, Roser and Bacon, Roland and Cantalupo, Sebastiano and Marino, Raffaella and Richard, Johan and Lilly, Simon and Schaye, Joop and Soto, Kurt and Steinmetz, Matthias and Straka, Lorrie A and Wisotzki, Lutz}, biburl = {https://www.bibsonomy.org/bibtex/217600437c49eb6ff87dc3c5e429c9c2e/miki}, description = {[1605.03412] MusE GAs FLOw and Wind (MEGAFLOW) I: First MUSE results on background quasars}, interhash = {db0f35cf93df10c411a8936ab386a964}, intrahash = {17600437c49eb6ff87dc3c5e429c9c2e}, keywords = {MgII galaxies host muse}, note = {cite arxiv:1605.03412Comment: 20 pages, 16 figures, submitted to ApJ}, timestamp = {2016-05-12T10:22:43.000+0200}, title = {MusE GAs FLOw and Wind (MEGAFLOW) I: First MUSE results on background quasars}, url = {http://arxiv.org/abs/1605.03412}, year = 2016 }