Buchumschlag

Final Moments II: Observational Properties and Physical Modeling of CSM-Interacting Type II Supernovae

Fuente: arXiv

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Bibliographische Detailangaben
Hauptverfasser:	Jacobson-Galán, W. V., Dessart, L., Davis, K. W., Kilpatrick, C. D., Margutti, R., Foley, R. J., Chornock, R., Terreran, G., Hiramatsu, D., Newsome, M., Gonzalez, E. Padilla, Pellegrino, C., Howell, D. A., Filippenko, A. V., Anderson, J. P., Angus, C. R., Auchettl, K., Bostroem, K. A., Brink, T. G., Cartier, R., Coulter, D. A., de Boer, T., Drout, M. R., Earl, N., Ertini, K., Farah, J. R., Farias, D., Gall, C., Gao, H., Gerlach, M. A., Guo, F., Haynie, A., Hosseinzadeh, G., Ibik, A. L., Jha, S. W., Jones, D. O., Langeroodi, D., LeBaron, N, Magnier, E. A., Piro, A. L., Raimundo, S. I., Rest, A., Rest, S., Rich, R. Michael, Rojas-Bravo, C., Sears, H., Taggart, K., Villar, V. A., Wainscoat, R. J., Wang, X-F., Wasserman, A. R., Yan, S., Yang, Y., Zhang, J., Zheng, W.
Format:	Preprint
Veröffentlicht:	2024
Schlagworte:	High Energy Astrophysical Phenomena Solar and Stellar Astrophysics
Online-Zugang:	Acceder al recurso
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_version_	1866929264492806144
author	Jacobson-Galán, W. V. Dessart, L. Davis, K. W. Kilpatrick, C. D. Margutti, R. Foley, R. J. Chornock, R. Terreran, G. Hiramatsu, D. Newsome, M. Gonzalez, E. Padilla Pellegrino, C. Howell, D. A. Filippenko, A. V. Anderson, J. P. Angus, C. R. Auchettl, K. Bostroem, K. A. Brink, T. G. Cartier, R. Coulter, D. A. de Boer, T. Drout, M. R. Earl, N. Ertini, K. Farah, J. R. Farias, D. Gall, C. Gao, H. Gerlach, M. A. Guo, F. Haynie, A. Hosseinzadeh, G. Ibik, A. L. Jha, S. W. Jones, D. O. Langeroodi, D. LeBaron, N Magnier, E. A. Piro, A. L. Raimundo, S. I. Rest, A. Rest, S. Rich, R. Michael Rojas-Bravo, C. Sears, H. Taggart, K. Villar, V. A. Wainscoat, R. J. Wang, X-F. Wasserman, A. R. Yan, S. Yang, Y. Zhang, J. Zheng, W.
author_facet	Jacobson-Galán, W. V. Dessart, L. Davis, K. W. Kilpatrick, C. D. Margutti, R. Foley, R. J. Chornock, R. Terreran, G. Hiramatsu, D. Newsome, M. Gonzalez, E. Padilla Pellegrino, C. Howell, D. A. Filippenko, A. V. Anderson, J. P. Angus, C. R. Auchettl, K. Bostroem, K. A. Brink, T. G. Cartier, R. Coulter, D. A. de Boer, T. Drout, M. R. Earl, N. Ertini, K. Farah, J. R. Farias, D. Gall, C. Gao, H. Gerlach, M. A. Guo, F. Haynie, A. Hosseinzadeh, G. Ibik, A. L. Jha, S. W. Jones, D. O. Langeroodi, D. LeBaron, N Magnier, E. A. Piro, A. L. Raimundo, S. I. Rest, A. Rest, S. Rich, R. Michael Rojas-Bravo, C. Sears, H. Taggart, K. Villar, V. A. Wainscoat, R. J. Wang, X-F. Wasserman, A. R. Yan, S. Yang, Y. Zhang, J. Zheng, W.
contents	We present ultraviolet/optical/near-infrared observations and modeling of Type II supernovae (SNe II) whose early-time ($δt < 2$ days) spectra show transient, narrow emission lines from shock ionization of confined ($r < 10^{15}$ cm) circumstellar material (CSM). The observed electron-scattering broadened line profiles (i.e., IIn-like) of HI, He I/II, C III/IV, and N III/IV/V from the CSM persist on a characteristic timescale ($t_{\rm IIn}$) that marks a transition to a lower-density CSM and the emergence of Doppler-broadened features from the fast-moving SN ejecta. Our sample, the largest to date, consists of 39 SNe with early-time IIn-like features in addition to 35 "comparison" SNe with no evidence of early-time IIn-like features, all with ultraviolet observations. The total sample consists of 50 unpublished objects with 474 previously unpublished spectra and 50 multiband light curves, collected primarily through the Young Supernova Experiment and Global Supernova Project collaborations. For all sample objects, we find a significant correlation between peak ultraviolet brightness and both $t_{\rm IIn}$ and the rise time, as well as evidence for enhanced peak luminosities in SNe II with IIn-like features. We quantify mass-loss rates and CSM density for the sample through matching of peak multiband absolute magnitudes, rise times, $t_{\rm IIn}$ and optical SN spectra with a grid of radiation hydrodynamics and non-local thermodynamic equilibrium (nLTE) radiative-transfer simulations. For our grid of models, all with the same underlying explosion, there is a trend between the duration of the electron-scattering broadened line profiles and inferred mass-loss rate: $t_{\rm IIn} \approx 3.8[\dot{M}/(0.01 \textrm{M}_{\odot} \textrm{yr}^{-1})]$ days.
format	Preprint
id	arxiv_https___arxiv_org_abs_2403_02382
institution	arXiv
publishDate	2024
record_format	arxiv
spellingShingle	Final Moments II: Observational Properties and Physical Modeling of CSM-Interacting Type II Supernovae Jacobson-Galán, W. V. Dessart, L. Davis, K. W. Kilpatrick, C. D. Margutti, R. Foley, R. J. Chornock, R. Terreran, G. Hiramatsu, D. Newsome, M. Gonzalez, E. Padilla Pellegrino, C. Howell, D. A. Filippenko, A. V. Anderson, J. P. Angus, C. R. Auchettl, K. Bostroem, K. A. Brink, T. G. Cartier, R. Coulter, D. A. de Boer, T. Drout, M. R. Earl, N. Ertini, K. Farah, J. R. Farias, D. Gall, C. Gao, H. Gerlach, M. A. Guo, F. Haynie, A. Hosseinzadeh, G. Ibik, A. L. Jha, S. W. Jones, D. O. Langeroodi, D. LeBaron, N Magnier, E. A. Piro, A. L. Raimundo, S. I. Rest, A. Rest, S. Rich, R. Michael Rojas-Bravo, C. Sears, H. Taggart, K. Villar, V. A. Wainscoat, R. J. Wang, X-F. Wasserman, A. R. Yan, S. Yang, Y. Zhang, J. Zheng, W. High Energy Astrophysical Phenomena Solar and Stellar Astrophysics We present ultraviolet/optical/near-infrared observations and modeling of Type II supernovae (SNe II) whose early-time ($δt < 2$ days) spectra show transient, narrow emission lines from shock ionization of confined ($r < 10^{15}$ cm) circumstellar material (CSM). The observed electron-scattering broadened line profiles (i.e., IIn-like) of HI, He I/II, C III/IV, and N III/IV/V from the CSM persist on a characteristic timescale ($t_{\rm IIn}$) that marks a transition to a lower-density CSM and the emergence of Doppler-broadened features from the fast-moving SN ejecta. Our sample, the largest to date, consists of 39 SNe with early-time IIn-like features in addition to 35 "comparison" SNe with no evidence of early-time IIn-like features, all with ultraviolet observations. The total sample consists of 50 unpublished objects with 474 previously unpublished spectra and 50 multiband light curves, collected primarily through the Young Supernova Experiment and Global Supernova Project collaborations. For all sample objects, we find a significant correlation between peak ultraviolet brightness and both $t_{\rm IIn}$ and the rise time, as well as evidence for enhanced peak luminosities in SNe II with IIn-like features. We quantify mass-loss rates and CSM density for the sample through matching of peak multiband absolute magnitudes, rise times, $t_{\rm IIn}$ and optical SN spectra with a grid of radiation hydrodynamics and non-local thermodynamic equilibrium (nLTE) radiative-transfer simulations. For our grid of models, all with the same underlying explosion, there is a trend between the duration of the electron-scattering broadened line profiles and inferred mass-loss rate: $t_{\rm IIn} \approx 3.8[\dot{M}/(0.01 \textrm{M}_{\odot} \textrm{yr}^{-1})]$ days.
title	Final Moments II: Observational Properties and Physical Modeling of CSM-Interacting Type II Supernovae
topic	High Energy Astrophysical Phenomena Solar and Stellar Astrophysics
url	https://arxiv.org/abs/2403.02382