Buchumschlag

WEAVE First Light Observations: Origin and Dynamics of the Shock Front in Stephan's Quintet

Fuente: arXiv

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Bibliographische Detailangaben
Hauptverfasser:	Arnaudova, M. I., Das, S., Smith, D. J. B., Hardcastle, M. J., Hatch, N., Trager, S. C., Smith, R. J., Drake, A. B., McGarry, J. C., Shenoy, S., Stott, J. P., Knapen, J. H., Hess, K. M., Duncan, K. J., Gloudemans, A., Best, P. N., García-Benito, R., Kondapally, R., Balcells, M., Couto, G. S., Abrams, D. C., Aguado, D., Aguerri, J. A. L., Barrena, R., Benn, C. R., Bensby, T., Berlanas, S. R., Bettoni, D., Cano-Infantes, D., Carrera, R., Concepción, P. J., Dalton, G. B., D'Ago, G., Dee, K., Domínguez-Palmero, L., Drew, J. E., Escott, E. L., Fariña, C., Fossati, M., Fumagalli, M., Gafton, E., Gribbin, F. J., Hughes, S., Iovino, A., Jin, S., Lewis, I. J., Longhetti, M., Méndez-Abreu, J., Mercurio, A., Molaeinezhad, A., Molinari, E., Monguió, M., Murphy, D. N. A., Picó, S., Pieri, M. M., Ridings, A. W., Romero-Gómez, M., Schallig, E., Shimwell, T. W., Skvarĉ, R., Stuik, R., Vallenari, A., van der Hulst, J. M., Walton, N. A., Worley, C. C.
Format:	Preprint
Veröffentlicht:	2024
Schlagworte:	Astrophysics of Galaxies
Online-Zugang:	Acceder al recurso
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_version_	1866913582399094784
author	Arnaudova, M. I. Das, S. Smith, D. J. B. Hardcastle, M. J. Hatch, N. Trager, S. C. Smith, R. J. Drake, A. B. McGarry, J. C. Shenoy, S. Stott, J. P. Knapen, J. H. Hess, K. M. Duncan, K. J. Gloudemans, A. Best, P. N. García-Benito, R. Kondapally, R. Balcells, M. Couto, G. S. Abrams, D. C. Aguado, D. Aguerri, J. A. L. Barrena, R. Benn, C. R. Bensby, T. Berlanas, S. R. Bettoni, D. Cano-Infantes, D. Carrera, R. Concepción, P. J. Dalton, G. B. D'Ago, G. Dee, K. Domínguez-Palmero, L. Drew, J. E. Escott, E. L. Fariña, C. Fossati, M. Fumagalli, M. Gafton, E. Gribbin, F. J. Hughes, S. Iovino, A. Jin, S. Lewis, I. J. Longhetti, M. Méndez-Abreu, J. Mercurio, A. Molaeinezhad, A. Molinari, E. Monguió, M. Murphy, D. N. A. Picó, S. Pieri, M. M. Ridings, A. W. Romero-Gómez, M. Schallig, E. Shimwell, T. W. Skvarĉ, R. Stuik, R. Vallenari, A. van der Hulst, J. M. Walton, N. A. Worley, C. C.
author_facet	Arnaudova, M. I. Das, S. Smith, D. J. B. Hardcastle, M. J. Hatch, N. Trager, S. C. Smith, R. J. Drake, A. B. McGarry, J. C. Shenoy, S. Stott, J. P. Knapen, J. H. Hess, K. M. Duncan, K. J. Gloudemans, A. Best, P. N. García-Benito, R. Kondapally, R. Balcells, M. Couto, G. S. Abrams, D. C. Aguado, D. Aguerri, J. A. L. Barrena, R. Benn, C. R. Bensby, T. Berlanas, S. R. Bettoni, D. Cano-Infantes, D. Carrera, R. Concepción, P. J. Dalton, G. B. D'Ago, G. Dee, K. Domínguez-Palmero, L. Drew, J. E. Escott, E. L. Fariña, C. Fossati, M. Fumagalli, M. Gafton, E. Gribbin, F. J. Hughes, S. Iovino, A. Jin, S. Lewis, I. J. Longhetti, M. Méndez-Abreu, J. Mercurio, A. Molaeinezhad, A. Molinari, E. Monguió, M. Murphy, D. N. A. Picó, S. Pieri, M. M. Ridings, A. W. Romero-Gómez, M. Schallig, E. Shimwell, T. W. Skvarĉ, R. Stuik, R. Vallenari, A. van der Hulst, J. M. Walton, N. A. Worley, C. C.
contents	We present a detailed study of the large-scale shock front in Stephan's Quintet, a byproduct of past and ongoing interactions. Using integral-field spectroscopy from the new William Herschel Telescope Enhanced Area Velocity Explorer (WEAVE), recent 144 MHz observations from the LOFAR Two-metre Sky Survey (LoTSS), and archival data from the Very Large Array and James Webb Space Telescope (JWST), we obtain new measurements of key shock properties and determine its impact on the system. Harnessing the WEAVE large integral field unit's (LIFU) field of view (90 $\times$ 78 arcsec$^{2}$), spectral resolution ($R\sim2500$) and continuous wavelength coverage across the optical band, we perform robust emission line modeling and dynamically locate the shock within the multi-phase intergalactic medium (IGM) with higher precision than previously possible. The shocking of the cold gas phase is hypersonic, and comparisons with shock models show that it can readily account for the observed emission line ratios. In contrast, we demonstrate that the shock is relatively weak in the hot plasma visible in X-rays (with Mach number of $\mathcal{M} \sim 2 - 4$), making it inefficient at producing the relativistic particles needed to explain the observed synchrotron emission. Instead, we propose that it has led to an adiabatic compression of the medium, which has increased the radio luminosity ten-fold. Comparison of the Balmer line-derived extinction map with the molecular gas and hot dust observed with JWST suggests that pre-existing dust may have survived the collision, allowing the condensation of H$_{2}$ - a key channel for dissipating the shock energy.
format	Preprint
id	arxiv_https___arxiv_org_abs_2411_13635
institution	arXiv
publishDate	2024
record_format	arxiv
spellingShingle	WEAVE First Light Observations: Origin and Dynamics of the Shock Front in Stephan's Quintet Arnaudova, M. I. Das, S. Smith, D. J. B. Hardcastle, M. J. Hatch, N. Trager, S. C. Smith, R. J. Drake, A. B. McGarry, J. C. Shenoy, S. Stott, J. P. Knapen, J. H. Hess, K. M. Duncan, K. J. Gloudemans, A. Best, P. N. García-Benito, R. Kondapally, R. Balcells, M. Couto, G. S. Abrams, D. C. Aguado, D. Aguerri, J. A. L. Barrena, R. Benn, C. R. Bensby, T. Berlanas, S. R. Bettoni, D. Cano-Infantes, D. Carrera, R. Concepción, P. J. Dalton, G. B. D'Ago, G. Dee, K. Domínguez-Palmero, L. Drew, J. E. Escott, E. L. Fariña, C. Fossati, M. Fumagalli, M. Gafton, E. Gribbin, F. J. Hughes, S. Iovino, A. Jin, S. Lewis, I. J. Longhetti, M. Méndez-Abreu, J. Mercurio, A. Molaeinezhad, A. Molinari, E. Monguió, M. Murphy, D. N. A. Picó, S. Pieri, M. M. Ridings, A. W. Romero-Gómez, M. Schallig, E. Shimwell, T. W. Skvarĉ, R. Stuik, R. Vallenari, A. van der Hulst, J. M. Walton, N. A. Worley, C. C. Astrophysics of Galaxies We present a detailed study of the large-scale shock front in Stephan's Quintet, a byproduct of past and ongoing interactions. Using integral-field spectroscopy from the new William Herschel Telescope Enhanced Area Velocity Explorer (WEAVE), recent 144 MHz observations from the LOFAR Two-metre Sky Survey (LoTSS), and archival data from the Very Large Array and James Webb Space Telescope (JWST), we obtain new measurements of key shock properties and determine its impact on the system. Harnessing the WEAVE large integral field unit's (LIFU) field of view (90 $\times$ 78 arcsec$^{2}$), spectral resolution ($R\sim2500$) and continuous wavelength coverage across the optical band, we perform robust emission line modeling and dynamically locate the shock within the multi-phase intergalactic medium (IGM) with higher precision than previously possible. The shocking of the cold gas phase is hypersonic, and comparisons with shock models show that it can readily account for the observed emission line ratios. In contrast, we demonstrate that the shock is relatively weak in the hot plasma visible in X-rays (with Mach number of $\mathcal{M} \sim 2 - 4$), making it inefficient at producing the relativistic particles needed to explain the observed synchrotron emission. Instead, we propose that it has led to an adiabatic compression of the medium, which has increased the radio luminosity ten-fold. Comparison of the Balmer line-derived extinction map with the molecular gas and hot dust observed with JWST suggests that pre-existing dust may have survived the collision, allowing the condensation of H$_{2}$ - a key channel for dissipating the shock energy.
title	WEAVE First Light Observations: Origin and Dynamics of the Shock Front in Stephan's Quintet
topic	Astrophysics of Galaxies
url	https://arxiv.org/abs/2411.13635