Molecular gas inflows and outflows in ultraluminous infrared galaxies at z similar to 0.2 and one QSO at z=6.1
<p><strong>Aims:</strong> Our aim is to search for and characterize inflows and outflows of molecular gas in four ultraluminous infrared galaxies (ULIRGs; LIR > 1012L⊙) at z ∼ 0.2−0.3 and one distant quasi-stellar object (QSO) at z = 6.13.</p> <p><strong>Meth...
| Main Authors: | , , , , , , , , , , , , , , |
|---|---|
| 格式: | Journal article |
| 出版: |
EDP Sciences
2020
|
| _version_ | 1826285404650733568 |
|---|---|
| author | Herrera-Camus, R Sturm, E Gracia-Carpio, J Veilleux, S Shimizu, T Lutz, D Stone, M Gonzalez-Alfonso, E Davies, R Fischer, J Genzel, R Maiolino, R Sternberg, A Tacconi, L Verma, A |
| author_facet | Herrera-Camus, R Sturm, E Gracia-Carpio, J Veilleux, S Shimizu, T Lutz, D Stone, M Gonzalez-Alfonso, E Davies, R Fischer, J Genzel, R Maiolino, R Sternberg, A Tacconi, L Verma, A |
| author_sort | Herrera-Camus, R |
| collection | OXFORD |
| description | <p><strong>Aims:</strong> Our aim is to search for and characterize inflows and outflows of molecular gas in four ultraluminous infrared galaxies (ULIRGs; LIR > 1012L⊙) at z ∼ 0.2−0.3 and one distant quasi-stellar object (QSO) at z = 6.13.</p>
<p><strong>Methods:</strong> We used Herschel/PACS and ALMA Band 7 observations of the hydroxyl molecule (OH) line at rest-frame wavelength 119 μm, which in absorption can provide unambiguous evidence of inflows or outflows of molecular gas in nuclear regions of galaxies. Our study contributes to doubling the number of OH 119 μm observations of luminous systems at z ∼ 0.2−0.3, and pushes the search for molecular outflows based on the OH 119 μm transition to z ∼ 6.</p>
<p><strong>Results:</strong> We detect OH 119 μm high-velocity absorption wings in three of the four ULIRGs. In two cases, IRAS F20036−1547 and IRAS F13352+6402, the blueshifted absorption profiles indicate the presence of powerful and fast (∼200−500 km s−1) molecular gas outflows. Consistent with an inside-out quenching scenario, these outflows are depleting the central reservoir of star-forming molecular gas at a rate similar to that of intense star formation activity. For the starburst-dominated system IRAS 10091+4704, we detect an inverted P Cygni profile that is unique among ULIRGs and indicates the presence of a fast (∼400 km s−1) inflow of molecular gas at a rate of ∼100 M⊙ yr−1 towards the central region. Finally, we tentatively detect (∼3σ) the OH 119 μm doublet in absorption in the z = 6.13 QSO ULAS J131911+095051. The OH 119 μm feature is blueshifted with a median velocity that suggests the presence of a molecular outflow, although characterized by a modest molecular mass loss rate of ∼200 M⊙ yr−1. This value is comparable to the small mass outflow rates found in the stacking of the [C II] spectra of other z ∼ 6 QSOs and suggests that ejective feedback in this phase of the evolution of ULAS J131911+095051 has subsided.</p> |
| first_indexed | 2024-03-07T01:28:19Z |
| format | Journal article |
| id | oxford-uuid:92b8f6a5-7de0-4c35-90b0-76908f4136dd |
| institution | University of Oxford |
| last_indexed | 2024-03-07T01:28:19Z |
| publishDate | 2020 |
| publisher | EDP Sciences |
| record_format | dspace |
| spelling | oxford-uuid:92b8f6a5-7de0-4c35-90b0-76908f4136dd2022-03-26T23:27:40ZMolecular gas inflows and outflows in ultraluminous infrared galaxies at z similar to 0.2 and one QSO at z=6.1Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:92b8f6a5-7de0-4c35-90b0-76908f4136ddSymplectic ElementsEDP Sciences2020Herrera-Camus, RSturm, EGracia-Carpio, JVeilleux, SShimizu, TLutz, DStone, MGonzalez-Alfonso, EDavies, RFischer, JGenzel, RMaiolino, RSternberg, ATacconi, LVerma, A<p><strong>Aims:</strong> Our aim is to search for and characterize inflows and outflows of molecular gas in four ultraluminous infrared galaxies (ULIRGs; LIR > 1012L⊙) at z ∼ 0.2−0.3 and one distant quasi-stellar object (QSO) at z = 6.13.</p> <p><strong>Methods:</strong> We used Herschel/PACS and ALMA Band 7 observations of the hydroxyl molecule (OH) line at rest-frame wavelength 119 μm, which in absorption can provide unambiguous evidence of inflows or outflows of molecular gas in nuclear regions of galaxies. Our study contributes to doubling the number of OH 119 μm observations of luminous systems at z ∼ 0.2−0.3, and pushes the search for molecular outflows based on the OH 119 μm transition to z ∼ 6.</p> <p><strong>Results:</strong> We detect OH 119 μm high-velocity absorption wings in three of the four ULIRGs. In two cases, IRAS F20036−1547 and IRAS F13352+6402, the blueshifted absorption profiles indicate the presence of powerful and fast (∼200−500 km s−1) molecular gas outflows. Consistent with an inside-out quenching scenario, these outflows are depleting the central reservoir of star-forming molecular gas at a rate similar to that of intense star formation activity. For the starburst-dominated system IRAS 10091+4704, we detect an inverted P Cygni profile that is unique among ULIRGs and indicates the presence of a fast (∼400 km s−1) inflow of molecular gas at a rate of ∼100 M⊙ yr−1 towards the central region. Finally, we tentatively detect (∼3σ) the OH 119 μm doublet in absorption in the z = 6.13 QSO ULAS J131911+095051. The OH 119 μm feature is blueshifted with a median velocity that suggests the presence of a molecular outflow, although characterized by a modest molecular mass loss rate of ∼200 M⊙ yr−1. This value is comparable to the small mass outflow rates found in the stacking of the [C II] spectra of other z ∼ 6 QSOs and suggests that ejective feedback in this phase of the evolution of ULAS J131911+095051 has subsided.</p> |
| spellingShingle | Herrera-Camus, R Sturm, E Gracia-Carpio, J Veilleux, S Shimizu, T Lutz, D Stone, M Gonzalez-Alfonso, E Davies, R Fischer, J Genzel, R Maiolino, R Sternberg, A Tacconi, L Verma, A Molecular gas inflows and outflows in ultraluminous infrared galaxies at z similar to 0.2 and one QSO at z=6.1 |
| title | Molecular gas inflows and outflows in ultraluminous infrared galaxies at z similar to 0.2 and one QSO at z=6.1 |
| title_full | Molecular gas inflows and outflows in ultraluminous infrared galaxies at z similar to 0.2 and one QSO at z=6.1 |
| title_fullStr | Molecular gas inflows and outflows in ultraluminous infrared galaxies at z similar to 0.2 and one QSO at z=6.1 |
| title_full_unstemmed | Molecular gas inflows and outflows in ultraluminous infrared galaxies at z similar to 0.2 and one QSO at z=6.1 |
| title_short | Molecular gas inflows and outflows in ultraluminous infrared galaxies at z similar to 0.2 and one QSO at z=6.1 |
| title_sort | molecular gas inflows and outflows in ultraluminous infrared galaxies at z similar to 0 2 and one qso at z 6 1 |
| work_keys_str_mv | AT herreracamusr moleculargasinflowsandoutflowsinultraluminousinfraredgalaxiesatzsimilarto02andoneqsoatz61 AT sturme moleculargasinflowsandoutflowsinultraluminousinfraredgalaxiesatzsimilarto02andoneqsoatz61 AT graciacarpioj moleculargasinflowsandoutflowsinultraluminousinfraredgalaxiesatzsimilarto02andoneqsoatz61 AT veilleuxs moleculargasinflowsandoutflowsinultraluminousinfraredgalaxiesatzsimilarto02andoneqsoatz61 AT shimizut moleculargasinflowsandoutflowsinultraluminousinfraredgalaxiesatzsimilarto02andoneqsoatz61 AT lutzd moleculargasinflowsandoutflowsinultraluminousinfraredgalaxiesatzsimilarto02andoneqsoatz61 AT stonem moleculargasinflowsandoutflowsinultraluminousinfraredgalaxiesatzsimilarto02andoneqsoatz61 AT gonzalezalfonsoe moleculargasinflowsandoutflowsinultraluminousinfraredgalaxiesatzsimilarto02andoneqsoatz61 AT daviesr moleculargasinflowsandoutflowsinultraluminousinfraredgalaxiesatzsimilarto02andoneqsoatz61 AT fischerj moleculargasinflowsandoutflowsinultraluminousinfraredgalaxiesatzsimilarto02andoneqsoatz61 AT genzelr moleculargasinflowsandoutflowsinultraluminousinfraredgalaxiesatzsimilarto02andoneqsoatz61 AT maiolinor moleculargasinflowsandoutflowsinultraluminousinfraredgalaxiesatzsimilarto02andoneqsoatz61 AT sternberga moleculargasinflowsandoutflowsinultraluminousinfraredgalaxiesatzsimilarto02andoneqsoatz61 AT tacconil moleculargasinflowsandoutflowsinultraluminousinfraredgalaxiesatzsimilarto02andoneqsoatz61 AT vermaa moleculargasinflowsandoutflowsinultraluminousinfraredgalaxiesatzsimilarto02andoneqsoatz61 |