I. Schroetter, Nicolas Bouche, Martin Wendt, Thierry Contini, H. Finley, R. Pello, Roland Bacon, Sebastiano Cantalupo, Raffaella Anna Marino, J. Richard, S. J. Lilly, Joop Schaye, K. Soto, Matthias Steinmetz, Lorrie A. Straka, Lutz Wisotzki
- 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 survey obtained from two quasar fields, which have eight Mg II absorbers of which three have rest equivalent width greater than 0.8 angstrom. With the new Multi Unit Spectroscopic Explorer (MUSE) spectrograph on the Very Large Telescope (VLT), we detect six (75%) Mg II host galaxy candidates within a radius of 30. from the quasar LOS. Out of these six galaxy-quasar pairs, from geometrical argument, one is likely probing galactic outflows, where 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 the Ultraviolet and Visual Echelle Spectrograph. Assuming the metal absorption to be due toThe 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 survey obtained from two quasar fields, which have eight Mg II absorbers of which three have rest equivalent width greater than 0.8 angstrom. With the new Multi Unit Spectroscopic Explorer (MUSE) spectrograph on the Very Large Telescope (VLT), we detect six (75%) Mg II host galaxy candidates within a radius of 30. from the quasar LOS. Out of these six galaxy-quasar pairs, from geometrical argument, one is likely probing galactic outflows, where 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 the Ultraviolet and Visual Echelle Spectrograph. Assuming the metal absorption to be due to ga;s flowing out of the detected galaxy through a cone along the minor axis, we find outflow velocities in the order of approximate to 150 km s(-1) (i.e., smaller than the escape velocity) with a loading factor, eta = M-out/SFR, of approximate to 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.…
MetadatenAuthor details: | I. Schroetter, Nicolas Bouche, Martin WendtORCiDGND, Thierry Contini, H. Finley, R. Pello, Roland Bacon, Sebastiano CantalupoORCiD, Raffaella Anna MarinoORCiD, J. Richard, S. J. Lilly, Joop SchayeORCiD, K. Soto, Matthias SteinmetzORCiDGND, Lorrie A. Straka, Lutz WisotzkiORCiDGND |
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DOI: | https://doi.org/10.3847/1538-4357/833/1/39 |
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ISSN: | 0004-637X |
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ISSN: | 1538-4357 |
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Title of parent work (English): | The astrophysical journal : an international review of spectroscopy and astronomical physics |
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Publisher: | IOP Publ. Ltd. |
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Place of publishing: | Bristol |
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Publication type: | Article |
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Language: | English |
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Year of first publication: | 2016 |
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Publication year: | 2016 |
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Release date: | 2020/03/22 |
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Tag: | galaxies: evolution; galaxies: formation; intergalactic medium; quasars: individual (SDSS J213748+001220, SDSS J215200+062516) |
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Volume: | 833 |
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Number of pages: | 17 |
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Funding institution: | Career Integration Grant (CIG) within the 7th European Community Framework Program [PCIG11-GA-2012-321702]; ANR FOGHAR [ANR-13-BS05-0010-02]; OCEVU Labex [ANR-11-LABX-0060]; A*MIDEX project - [ANR-11-IDEX-0001-02]; European Research Council under the European Unions Seventh Framework Programme (FP7)/ERC [278594] |
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Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
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Peer review: | Referiert |
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