학술논문
JWST MIRI Imager Observations of Supernova SN 1987A
Document Type
Working Paper
Author
Bouchet, P.; Gastaud, R.; Coulais, A.; Barlow, M. J.; Fransson, C.; Kavanagh, P. J.; Larsson, J.; Temim, T.; Jones, O. C.; Hirschauer, A. S.; Tikkanen, T.; Blommaert, J. A. D. L.; Fox, O. D.; Glasse, A.; Habel, N.; Hjorth, J.; Jaspers, J.; Krause, O.; Lau, R. M.; Lenkić, L.; Meixner, M.; Nayak, O.; Rest, A.; Sargent, B.; Wesson, R.; Wright, G. S.; Colina, L.; Van Dishoeck, E. F.; Güdel, M.; Henning, Th.; Lagage, P. -O.; Östlin, G.; Ray, T. P.; Vandenbussche, B.
Source
Subject
Language
Abstract
There exist very few mid-infrared (IR) observations of supernovae (SNe) in general. Therefore, SN 1987A, the closest visible SN in 400 years, gives us the opportunity to explore the mid-IR properties of SNe, the dust in their ejecta and surrounding medium, and to witness the birth of a SN remnant (SNR). The James Webb Space Telescope (JWST), with its high spatial resolution and extreme sensitivity, gives a new view on these issues. We report on the first imaging observations obtained with the Mid-InfraRed Instrument (MIRI). We build temperature maps and discuss the morphology of the nascent SNR. Our results show that the temperatures in the equatorial ring (ER) are quite non-uniform. This could be due to dust destruction in some parts of the ring, as had been assumed in some previous works. We show that the IR emission extends beyond the ER, illustrating the fact that the shock wave has now passed through this ring to affect the circumstellar medium on a larger scale. Finally, while sub-mm Atacama Large Millimeter Array (ALMA) observations have hinted at the location of the compact remnant of SN 1987A, we note that our MIRI data have found no such evidence.
Comment: 19 pages, 19 figures, 2 tables; Accepted for publication in the Astrophysical Journal (February 2, 2024)
Comment: 19 pages, 19 figures, 2 tables; Accepted for publication in the Astrophysical Journal (February 2, 2024)