JWST/MIRI detects the dusty SN1993J about 30 years after explosion
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| Title: | JWST/MIRI detects the dusty SN1993J about 30 years after explosion |
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| Authors: | Szalai, Tamás, Zsíros, Szanna, Jencson, Jacob, Fox, Ori D., Shahbandeh, Melissa, Sarangi, Arkaprabha, Temim, Tea, De Looze, Ilse, Smith, Nathan, Filippenko, Alexei V., Van Dyk, Schuyler D., Andrews, Jennifer, Ashall, Chris, Clayton, Geoffrey C., Dessart, Luc, Dulude, Michael, Dwek, Eli, Gomez, Sebastian, Pearson Johansson, Joel, 1984, Milisavljevic, Dan, Pierel, Justin, Rest, Armin, Tinyanont, Samaporn, Brink, Thomas G., De, Kishalay, Engesser, Michael, Foley, Ryan J., Gezari, Suvi, Kasliwal, Mansi, Lau, Ryan, Marston, Anthony, O’Steen, Richard, Siebert, Matthew, Skrutskie, Michael, Strolger, Lou, Wang, Qinan, Williams, Brian J., Williams, Robert, Xiao, Lin, Zheng, WeiKang |
| Source: | Astronomy and Astrophysics. 697 |
| Subject Terms: | dust, extinction, ISM: supernova remnants, supernovae: general, supernovae: individual: SN1993J |
| Description: | Context. Core-collapse supernovae (CCSNe) have long been considered to contribute significantly to the cosmic dust budget. Newly-formed dust in the SN ejecta cools quickly and is therefore detectable at mid-infrared (mid-IR) wavelengths. However, before the era of the James Webb Space Telescope (JWST), direct observational evidence for dust condensation was found in only a handful of nearby CCSNe, and dust masses (∼10−2−10−3 M, generally limited to <5 yr and to >500 K temperatures) have been two to three orders of magnitude smaller than theoretical predictions and dust amounts found by far-IR/submillimeter observations of Galactic SN remnants and in the very nearby SN 1987A. Aims. As recently demonstrated, the combined angular resolution and mid-IR sensitivity of JWST finally allow hidden cool (∼100-200 K) dust reservoirs in extragalactic SNe beyond SN 1987A to be revealed. Our team received JWST/MIRI time for studying a larger sample of CCSNe to fill the currently existing gap in their dust formation histories. The first observed target of this program was the well-known Type IIb SN 1993J that appeared in M81. Methods. We generated its spectral energy distribution (SED) from the current JWST/MIRI F770W, F1000W, F1500W, and F2100W fluxes. We fit single- and two-component silicate and carbonaceous dust models to the SED in order to determine the dust parameters. Results. We find that SN 1993J still contains a significant amount (∼0.01 M) of dust ∼30 yr after explosion. Comparing our results to those from the analysis of earlier Spitzer Space Telescope data, we observed a similar amount of dust as was detected ∼15-20 yr ago, but at a lower temperature (noting that the modeling results of the earlier Spitzer SEDs have strong limitations). We also found residual background emission near the SN site (after point-spread-function subtraction on the JWST/MIRI images) that may plausibly be attributed to an IR echo from more distant interstellar dust grains heated by the SN shock-breakout luminosity or ongoing star formation in the local environment. |
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| Access URL: | https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-243932 https://doi.org/10.1051/0004-6361/202451470 |
| Database: | SwePub |
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Nájsť tento článok vo Web of Science | Abstract: | Context. Core-collapse supernovae (CCSNe) have long been considered to contribute significantly to the cosmic dust budget. Newly-formed dust in the SN ejecta cools quickly and is therefore detectable at mid-infrared (mid-IR) wavelengths. However, before the era of the James Webb Space Telescope (JWST), direct observational evidence for dust condensation was found in only a handful of nearby CCSNe, and dust masses (∼10−2−10−3 M, generally limited to <5 yr and to >500 K temperatures) have been two to three orders of magnitude smaller than theoretical predictions and dust amounts found by far-IR/submillimeter observations of Galactic SN remnants and in the very nearby SN 1987A. Aims. As recently demonstrated, the combined angular resolution and mid-IR sensitivity of JWST finally allow hidden cool (∼100-200 K) dust reservoirs in extragalactic SNe beyond SN 1987A to be revealed. Our team received JWST/MIRI time for studying a larger sample of CCSNe to fill the currently existing gap in their dust formation histories. The first observed target of this program was the well-known Type IIb SN 1993J that appeared in M81. Methods. We generated its spectral energy distribution (SED) from the current JWST/MIRI F770W, F1000W, F1500W, and F2100W fluxes. We fit single- and two-component silicate and carbonaceous dust models to the SED in order to determine the dust parameters. Results. We find that SN 1993J still contains a significant amount (∼0.01 M) of dust ∼30 yr after explosion. Comparing our results to those from the analysis of earlier Spitzer Space Telescope data, we observed a similar amount of dust as was detected ∼15-20 yr ago, but at a lower temperature (noting that the modeling results of the earlier Spitzer SEDs have strong limitations). We also found residual background emission near the SN site (after point-spread-function subtraction on the JWST/MIRI images) that may plausibly be attributed to an IR echo from more distant interstellar dust grains heated by the SN shock-breakout luminosity or ongoing star formation in the local environment. |
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| ISSN: | 00046361 14320746 |
| DOI: | 10.1051/0004-6361/202451470 |