Evidence for Extended Hydrogen-Poor CSM in the Three-Peaked Light Curve of Stripped Envelope Ib Supernova
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2022
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| author | Zenati, Yossef Wang, Qinan Bobrick, Alexey DeMarchi, Lindsay Glanz, Hila Rozner, Mor Rest, Armin Metzger, Brian D. Margutti, Raffaella Gomez, Sebastian Smith, Nathan Toonen, Silvia Bright, Joe S. Norman, Colin Foley, Ryan J. Gagliano, Alexander Krolik, Julian H. Smartt, Stephen J. Villar, Ashley V. Narayan, Gautham Fox, Ori Auchettl, Katie Brethauer, Daniel Clocchiatti, Alejandro Coelln, Sophie V. Coppejans, Deanne L. Dimitriadis, Georgios Doroszmai, Andris Drout, Maria Jacobson-Galan, Wynn Gao, Bore Ridden-Harper, Ryan Kilpatrick, Charles Donald Laskar, Tanmoy Matthews, David Rest, Sofia Smith, Ken W. Stauffer, Candice McKenzie Stroh, Michael C. Strolger, Louis-Gregory Terreran, Giacomo Pierel, Justin D. R. Piro, Anthony L. |
| author_facet | Zenati, Yossef Wang, Qinan Bobrick, Alexey DeMarchi, Lindsay Glanz, Hila Rozner, Mor Rest, Armin Metzger, Brian D. Margutti, Raffaella Gomez, Sebastian Smith, Nathan Toonen, Silvia Bright, Joe S. Norman, Colin Foley, Ryan J. Gagliano, Alexander Krolik, Julian H. Smartt, Stephen J. Villar, Ashley V. Narayan, Gautham Fox, Ori Auchettl, Katie Brethauer, Daniel Clocchiatti, Alejandro Coelln, Sophie V. Coppejans, Deanne L. Dimitriadis, Georgios Doroszmai, Andris Drout, Maria Jacobson-Galan, Wynn Gao, Bore Ridden-Harper, Ryan Kilpatrick, Charles Donald Laskar, Tanmoy Matthews, David Rest, Sofia Smith, Ken W. Stauffer, Candice McKenzie Stroh, Michael C. Strolger, Louis-Gregory Terreran, Giacomo Pierel, Justin D. R. Piro, Anthony L. |
| contents | We present multi-band ATLAS photometry for SN 2019tsf, a stripped-envelope Type Ib supernova (SESN). The SN shows a triple-peaked light curve and a late (re-)brightening, making it unique among stripped-envelope systems. The re-brightening observations represent the latest photometric measurements of a multi-peaked Type Ib SN to date. As late-time photometry and spectroscopy suggest no hydrogen, the potential circumstellar material (CSM) must be H-poor. Moreover, late (>150 days) spectra show no signs of narrow emission lines, further disfavouring CSM interaction. On the contrary, an extended CSM structure is seen through a follow-up radio campaign with Karl G. Jansky Very Large Array (VLA), indicating a source of bright optically thick radio emission at late times, which is highly unusual among H-poor SESNe. We attribute this phenomenology to an interaction of the supernova ejecta with spherically-asymmetric CSM, potentially disk-like, and we present several models that can potentially explain the origin of this rare Type Ib supernova. The warped disc model paints a novel picture, where the tertiary companion perturbs the progenitors CSM, that can explain the multi-peaked light curves of SNe, and here we apply it to SN 2019tsf. This SN 2019tsf is likely a member of a new sub-class of Type Ib SNe and among the recently discovered class of SNe that undergo mass transfer at the moment of explosion |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2207_07146 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Evidence for Extended Hydrogen-Poor CSM in the Three-Peaked Light Curve of Stripped Envelope Ib Supernova Zenati, Yossef Wang, Qinan Bobrick, Alexey DeMarchi, Lindsay Glanz, Hila Rozner, Mor Rest, Armin Metzger, Brian D. Margutti, Raffaella Gomez, Sebastian Smith, Nathan Toonen, Silvia Bright, Joe S. Norman, Colin Foley, Ryan J. Gagliano, Alexander Krolik, Julian H. Smartt, Stephen J. Villar, Ashley V. Narayan, Gautham Fox, Ori Auchettl, Katie Brethauer, Daniel Clocchiatti, Alejandro Coelln, Sophie V. Coppejans, Deanne L. Dimitriadis, Georgios Doroszmai, Andris Drout, Maria Jacobson-Galan, Wynn Gao, Bore Ridden-Harper, Ryan Kilpatrick, Charles Donald Laskar, Tanmoy Matthews, David Rest, Sofia Smith, Ken W. Stauffer, Candice McKenzie Stroh, Michael C. Strolger, Louis-Gregory Terreran, Giacomo Pierel, Justin D. R. Piro, Anthony L. High Energy Astrophysical Phenomena We present multi-band ATLAS photometry for SN 2019tsf, a stripped-envelope Type Ib supernova (SESN). The SN shows a triple-peaked light curve and a late (re-)brightening, making it unique among stripped-envelope systems. The re-brightening observations represent the latest photometric measurements of a multi-peaked Type Ib SN to date. As late-time photometry and spectroscopy suggest no hydrogen, the potential circumstellar material (CSM) must be H-poor. Moreover, late (>150 days) spectra show no signs of narrow emission lines, further disfavouring CSM interaction. On the contrary, an extended CSM structure is seen through a follow-up radio campaign with Karl G. Jansky Very Large Array (VLA), indicating a source of bright optically thick radio emission at late times, which is highly unusual among H-poor SESNe. We attribute this phenomenology to an interaction of the supernova ejecta with spherically-asymmetric CSM, potentially disk-like, and we present several models that can potentially explain the origin of this rare Type Ib supernova. The warped disc model paints a novel picture, where the tertiary companion perturbs the progenitors CSM, that can explain the multi-peaked light curves of SNe, and here we apply it to SN 2019tsf. This SN 2019tsf is likely a member of a new sub-class of Type Ib SNe and among the recently discovered class of SNe that undergo mass transfer at the moment of explosion |
| title | Evidence for Extended Hydrogen-Poor CSM in the Three-Peaked Light Curve of Stripped Envelope Ib Supernova |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2207.07146 |