Broad [CII] line wings as tracer of molecular and multi-phase outflows in infrared bright galaxies
<p style="text-align:justify;">We report a tentative correlation between the outflow characteristics derived from OH absorption at 119 μm and [C ii] emission at 158 μm in a sample of 22 local and bright ultraluminous infrared galaxies (ULIRGs). For this sample, we investigate whether...
| Autores principales: | , , , , , , , , , , , , , , , |
|---|---|
| Formato: | Journal article |
| Publicado: |
American Astronomical Society
2016
|
| _version_ | 1826301165938147328 |
|---|---|
| author | Janssen, A Christopher, N Sturm, E Veilleux, S Contursi, A Gonzalez-Alfonso, E Fischer, J Davies, R Verma, A Gracia-Carpio, J Genzel, R Lutz, D Sternberg, A Tacconi, L Burtscher, L Poglitsch, A |
| author_facet | Janssen, A Christopher, N Sturm, E Veilleux, S Contursi, A Gonzalez-Alfonso, E Fischer, J Davies, R Verma, A Gracia-Carpio, J Genzel, R Lutz, D Sternberg, A Tacconi, L Burtscher, L Poglitsch, A |
| author_sort | Janssen, A |
| collection | OXFORD |
| description | <p style="text-align:justify;">We report a tentative correlation between the outflow characteristics derived from OH absorption at 119 μm and [C ii] emission at 158 μm in a sample of 22 local and bright ultraluminous infrared galaxies (ULIRGs). For this sample, we investigate whether [C ii] broad wings are a good tracer of molecular outflows, and how the two tracers are connected. Fourteen objects in our sample have a broad wing component as traced by [C ii], and all of these also show OH119 absorption indicative of an outflow (in one case an inflow). The other eight cases, where no broad [C ii] component was found, are predominantly objects with no OH outflow or a low-velocity (≤100 km s−1) OH outflow. The FWHM of the broad [C ii] component shows a trend with the OH119 blueshifted velocity, although with significant scatter. Moreover, and despite large uncertainties, the outflow masses derived from OH and broad [C ii] show a 1:1 relation. The main conclusion is therefore that broad [C ii] wings can be used to trace molecular outflows. This may be particularly relevant at high redshift, where the usual tracers of molecular gas (like low-J CO lines) become hard to observe. Additionally, observations of blueshifted Na i D λλ 5890, 5896 absorption are available for 10 of our sources. Outflow velocities of Na i D show a trend with OH velocity and broad [C ii] FWHM. These observations suggest that the atomic and molecular gas phases of the outflow are connected.</p> |
| first_indexed | 2024-03-07T05:28:15Z |
| format | Journal article |
| id | oxford-uuid:e14e1e0b-98ec-4c2c-99b5-ecb3f0bf821a |
| institution | University of Oxford |
| last_indexed | 2024-03-07T05:28:15Z |
| publishDate | 2016 |
| publisher | American Astronomical Society |
| record_format | dspace |
| spelling | oxford-uuid:e14e1e0b-98ec-4c2c-99b5-ecb3f0bf821a2022-03-27T09:53:35ZBroad [CII] line wings as tracer of molecular and multi-phase outflows in infrared bright galaxiesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:e14e1e0b-98ec-4c2c-99b5-ecb3f0bf821aSymplectic Elements at OxfordAmerican Astronomical Society2016Janssen, AChristopher, NSturm, EVeilleux, SContursi, AGonzalez-Alfonso, EFischer, JDavies, RVerma, AGracia-Carpio, JGenzel, RLutz, DSternberg, ATacconi, LBurtscher, LPoglitsch, A<p style="text-align:justify;">We report a tentative correlation between the outflow characteristics derived from OH absorption at 119 μm and [C ii] emission at 158 μm in a sample of 22 local and bright ultraluminous infrared galaxies (ULIRGs). For this sample, we investigate whether [C ii] broad wings are a good tracer of molecular outflows, and how the two tracers are connected. Fourteen objects in our sample have a broad wing component as traced by [C ii], and all of these also show OH119 absorption indicative of an outflow (in one case an inflow). The other eight cases, where no broad [C ii] component was found, are predominantly objects with no OH outflow or a low-velocity (≤100 km s−1) OH outflow. The FWHM of the broad [C ii] component shows a trend with the OH119 blueshifted velocity, although with significant scatter. Moreover, and despite large uncertainties, the outflow masses derived from OH and broad [C ii] show a 1:1 relation. The main conclusion is therefore that broad [C ii] wings can be used to trace molecular outflows. This may be particularly relevant at high redshift, where the usual tracers of molecular gas (like low-J CO lines) become hard to observe. Additionally, observations of blueshifted Na i D λλ 5890, 5896 absorption are available for 10 of our sources. Outflow velocities of Na i D show a trend with OH velocity and broad [C ii] FWHM. These observations suggest that the atomic and molecular gas phases of the outflow are connected.</p> |
| spellingShingle | Janssen, A Christopher, N Sturm, E Veilleux, S Contursi, A Gonzalez-Alfonso, E Fischer, J Davies, R Verma, A Gracia-Carpio, J Genzel, R Lutz, D Sternberg, A Tacconi, L Burtscher, L Poglitsch, A Broad [CII] line wings as tracer of molecular and multi-phase outflows in infrared bright galaxies |
| title | Broad [CII] line wings as tracer of molecular and multi-phase outflows in infrared bright galaxies |
| title_full | Broad [CII] line wings as tracer of molecular and multi-phase outflows in infrared bright galaxies |
| title_fullStr | Broad [CII] line wings as tracer of molecular and multi-phase outflows in infrared bright galaxies |
| title_full_unstemmed | Broad [CII] line wings as tracer of molecular and multi-phase outflows in infrared bright galaxies |
| title_short | Broad [CII] line wings as tracer of molecular and multi-phase outflows in infrared bright galaxies |
| title_sort | broad cii line wings as tracer of molecular and multi phase outflows in infrared bright galaxies |
| work_keys_str_mv | AT janssena broadciilinewingsastracerofmolecularandmultiphaseoutflowsininfraredbrightgalaxies AT christophern broadciilinewingsastracerofmolecularandmultiphaseoutflowsininfraredbrightgalaxies AT sturme broadciilinewingsastracerofmolecularandmultiphaseoutflowsininfraredbrightgalaxies AT veilleuxs broadciilinewingsastracerofmolecularandmultiphaseoutflowsininfraredbrightgalaxies AT contursia broadciilinewingsastracerofmolecularandmultiphaseoutflowsininfraredbrightgalaxies AT gonzalezalfonsoe broadciilinewingsastracerofmolecularandmultiphaseoutflowsininfraredbrightgalaxies AT fischerj broadciilinewingsastracerofmolecularandmultiphaseoutflowsininfraredbrightgalaxies AT daviesr broadciilinewingsastracerofmolecularandmultiphaseoutflowsininfraredbrightgalaxies AT vermaa broadciilinewingsastracerofmolecularandmultiphaseoutflowsininfraredbrightgalaxies AT graciacarpioj broadciilinewingsastracerofmolecularandmultiphaseoutflowsininfraredbrightgalaxies AT genzelr broadciilinewingsastracerofmolecularandmultiphaseoutflowsininfraredbrightgalaxies AT lutzd broadciilinewingsastracerofmolecularandmultiphaseoutflowsininfraredbrightgalaxies AT sternberga broadciilinewingsastracerofmolecularandmultiphaseoutflowsininfraredbrightgalaxies AT tacconil broadciilinewingsastracerofmolecularandmultiphaseoutflowsininfraredbrightgalaxies AT burtscherl broadciilinewingsastracerofmolecularandmultiphaseoutflowsininfraredbrightgalaxies AT poglitscha broadciilinewingsastracerofmolecularandmultiphaseoutflowsininfraredbrightgalaxies |