CLusters in the Uv as EngineS (CLUES). II. Sub-kpc scale outflows driven by stellar feedback
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arXiv
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| Natura: | Preprint |
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2024
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| author | Sirressi, Mattia Adamo, Angela Hayes, Matthew Rivera-Thorsen, Thøger Emil Aloisi, Alessandra Bik, Arjan Calzetti, Daniela Chisholm, John Fox, Andrew J. Fumagalli, Michele Grasha, Kathryn Hernandez, Svea Messa, Matteo Osborne, Shannon Östlin, Göran Sabbi, Elena Schinnerer, Eva Smith, Linda J. Usher, Christopher Wofford, Aida |
| author_facet | Sirressi, Mattia Adamo, Angela Hayes, Matthew Rivera-Thorsen, Thøger Emil Aloisi, Alessandra Bik, Arjan Calzetti, Daniela Chisholm, John Fox, Andrew J. Fumagalli, Michele Grasha, Kathryn Hernandez, Svea Messa, Matteo Osborne, Shannon Östlin, Göran Sabbi, Elena Schinnerer, Eva Smith, Linda J. Usher, Christopher Wofford, Aida |
| contents | We analyze the far-ultraviolet spectroscopy of 20 young and massive star clusters (YSCs) in 11 nearby star-forming galaxies. We probe the interstellar gas intervening along the line of sight, detecting several metal absorption lines of a wide range of ionization potentials, from 6.0 eV to 77.5 eV. Multiple-component Voigt fits to the absorption lines are used to study the kinematics of the gas. We find that nearly all targets in the sample feature gas outflowing from 30 up to 190 km per second, often both in the neutral and ionized phase. The outflow velocities correlate with the underlying stellar population properties directly linked to the feedback: the mass of the YSCs, the photon production rate and the instantaneous mechanical luminosity produced by stellar winds and SNe. We detect a neutral inflow in 4 targets, which we interpret as likely not associated with the star cluster but tracing larger scale gas kinematics. A comparison between the outflows energy and that produced by the associated young stellar populations suggests an average coupling efficiency of 10 per cent with a broad scatter. Our results extend the relation found in previous works between galactic outflows and the host galaxy star-formation rate to smaller scales, pointing towards the key role that clustered star formation and feedback play in regulating galaxy growth. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_10270 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | CLusters in the Uv as EngineS (CLUES). II. Sub-kpc scale outflows driven by stellar feedback Sirressi, Mattia Adamo, Angela Hayes, Matthew Rivera-Thorsen, Thøger Emil Aloisi, Alessandra Bik, Arjan Calzetti, Daniela Chisholm, John Fox, Andrew J. Fumagalli, Michele Grasha, Kathryn Hernandez, Svea Messa, Matteo Osborne, Shannon Östlin, Göran Sabbi, Elena Schinnerer, Eva Smith, Linda J. Usher, Christopher Wofford, Aida Astrophysics of Galaxies We analyze the far-ultraviolet spectroscopy of 20 young and massive star clusters (YSCs) in 11 nearby star-forming galaxies. We probe the interstellar gas intervening along the line of sight, detecting several metal absorption lines of a wide range of ionization potentials, from 6.0 eV to 77.5 eV. Multiple-component Voigt fits to the absorption lines are used to study the kinematics of the gas. We find that nearly all targets in the sample feature gas outflowing from 30 up to 190 km per second, often both in the neutral and ionized phase. The outflow velocities correlate with the underlying stellar population properties directly linked to the feedback: the mass of the YSCs, the photon production rate and the instantaneous mechanical luminosity produced by stellar winds and SNe. We detect a neutral inflow in 4 targets, which we interpret as likely not associated with the star cluster but tracing larger scale gas kinematics. A comparison between the outflows energy and that produced by the associated young stellar populations suggests an average coupling efficiency of 10 per cent with a broad scatter. Our results extend the relation found in previous works between galactic outflows and the host galaxy star-formation rate to smaller scales, pointing towards the key role that clustered star formation and feedback play in regulating galaxy growth. |
| title | CLusters in the Uv as EngineS (CLUES). II. Sub-kpc scale outflows driven by stellar feedback |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2402.10270 |