تقرير
Radio jet-ISM interaction and positive radio-mechanical feedback in Abell 1795
| العنوان: | Radio jet-ISM interaction and positive radio-mechanical feedback in Abell 1795 |
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| المؤلفون: | Tamhane, Prathamesh, Mcnamara, Brian, Russell, Helen, Combes, Francoise, Qiu, Yu, Edge, Alastair, Maiolino, Roberto, Fabian, Andrew, Nulsen, Paul, Johnstone, R., Carniani, Stefano |
| المساهمون: | Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique et Atmosphères = Laboratory for Studies of Radiation and Matter in Astrophysics and Atmospheres (LERMA), École normale supérieure - Paris (ENS-PSL), Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris Sciences et Lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-CY Cergy Paris Université (CY), Collège de France - Chaire Galaxies et cosmologie, Collège de France (CdF (institution)), Rochester Institute of Technology (RIT), Kavli Institute for Cosmology Cambridge (KICC), University of Cambridge UK (CAM), Cavendish Laboratory, Department of Physics and Astronomy UCL London, University College of London London (UCL), Harvard-Smithsonian Center for Astrophysics (CfA), Harvard University-Smithsonian Institution, Scuola Normale Superiore di Pisa (SNS) |
| المصدر: | https://hal.science/hal-04255838Test ; 2023. |
| بيانات النشر: | HAL CCSD |
| سنة النشر: | 2023 |
| المجموعة: | Archive de l'Observatoire de Paris (HAL) |
| مصطلحات موضوعية: | Astrophysics of Galaxies (astro-ph.GA), FOS: Physical sciences, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] |
| الوصف: | We present XSHOOTER observations with previous ALMA, MUSE and $HST$ observations to study the nature of radio-jet triggered star formation and the interaction of radio jets with the interstellar medium in the brightest cluster galaxy (BCG) in the Abell 1795 cluster. Using $HST$ UV data we determined an ongoing star formation rate of 9.3 M$_\odot$ yr$^{-1}$. The star formation follows the global Kennicutt-Schmidt law, however, it has a low efficiency compared to circumnuclear starbursts in nearby galaxies with an average depletion time of $\sim$1 Gyr. The star formation and molecular gas are offset by $\sim1$ kpc indicating that stars have decoupled from the gas. We detected an arc of high linewidth in ionized gas where electron densities are elevated by a factor of $\sim$4 suggesting a shock front driven by radio jets or peculiar motion of the BCG. An analysis of nebular emission line flux ratios suggests that the gas is predominantly ionized by star formation with a small contribution from shocks. We also calculated the velocity structure function (VSF) of the ionized and molecular gases using velocity maps to characterize turbulent motion in the gas. The ionized gas VSF suggests that the radio jets are driving supersonic turbulence in the gas. Thus radio jets can not only heat the atmosphere on large scales and may quench star formation on longer timescales while triggering star formation in positive feedback on short timescales of a few million years. |
| نوع الوثيقة: | report |
| اللغة: | English |
| العلاقة: | hal-04255838; https://hal.science/hal-04255838Test |
| DOI: | 10.48550/arXiv.2212.11313 |
| الإتاحة: | https://doi.org/10.48550/arXiv.2212.11313Test https://hal.science/hal-04255838Test |
| رقم الانضمام: | edsbas.2CCDCFFB |
| قاعدة البيانات: | BASE |
| DOI: | 10.48550/arXiv.2212.11313 |
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