JWST NIRCam Observations of SN 1987A: Spitzer Comparison and Spectral Decomposition
| dc.contributor.author | Arendt, Richard | |
| dc.contributor.author | Boyer, Martha L. | |
| dc.contributor.author | Dwek, Eli | |
| dc.contributor.author | Matsuura, Mikako | |
| dc.contributor.author | et al | |
| dc.date.accessioned | 2023-10-13T14:00:10Z | |
| dc.date.available | 2023-10-13T14:00:10Z | |
| dc.date.issued | 2023-12-11 | |
| dc.description | Authors:- Richard G. Arendt, Martha L. Boyer, Eli Dwek, Mikako Matsuura, Aravind P. Ravi, Armin Rest, Roger Chevalier, Phil Cigan, Ilse De Looze, Guido De Marchi, Claes Fransson, Christa Gall, R. D. Gehrz, Haley L. Gomez, Tuomas Kangas, Florian Kirchschlager, Robert P. Kirshner, Josefin Larsson, Peter Lundqvist, Dan Milisavljevic, Sangwook Park, Nathan Smith, Jason Spyromilio, Tea Temim, Lifan Wang, J. Craig Wheeler, Charles E. Woodward | en_US |
| dc.description.abstract | JWST NIRCam observations at 1.5-4.5 μm have provided broad and narrow band imaging of the evolving remnant of SN 1987A with unparalleled sensitivity and spatial resolution. Comparing with previous marginally spatially resolved Spitzer IRAC observations from 2004-2019 confirms that the emission arises from the circumstellar equatorial ring (ER), and the current brightness at 3.6 and 4.5 μm was accurately predicted by extrapolation of the declining brightness tracked by IRAC. Despite the regular light curve, the NIRCam observations clearly reveal that much of this emission is from a newly developing outer portion of the ER. Spots in the outer ER tend to lie at position angles in between the well-known ER hotspots. We show that the bulk of the emission in the field can be represented by 5 standard spectral energy distributions (SEDs), each with a distinct origin and spatial distribution. This spectral decomposition provides a powerful technique for distinguishing overlapping emission from the circumstellar medium (CSM) and the supernova (SN) ejecta, excited by the forward and reverse shocks respectively. | en_US |
| dc.description.sponsorship | This work is based on observations made with the NASA/ESA/CSA James Webb Space Telescope. The data were obtained from the Mikulski Archive for Space Telescopes at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-03127 for JWST. These observations are associated with program #1726. Support for program #1726 was provided by NASA through a grant from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-03127. Work by R.G.A. was supported by NASA under award number 80GSFC21M0002. I.D.L. and F.K. acknowledge funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (#851622 DustOrigin). C.G. is supported by a VILLUM FONDEN Villum Young Investigator Grant (25501). R.D.G. was supported, in part, by the United States Air Force. P.L. thanks the Swedish Research Council for support. M.M. and R.W. acknowledge support from STFC STFC Consolidated grant (2422911). J.C.W. is supported by NSF Grant AST 1813825. We thank the anonymous referee for helpful advice on improvements to the text and figures. | en_US |
| dc.description.uri | https://iopscience.iop.org/article/10.3847/1538-4357/acfd95 | en_US |
| dc.format.extent | 16 pages | en_US |
| dc.genre | journal articles | en_US |
| dc.identifier | doi:10.13016/m2irhj-e5uy | |
| dc.identifier.citation | Arendt, Richard G., Martha L. Boyer, Eli Dwek, Mikako Matsuura, Aravind P. Ravi, Armin Rest, Roger Chevalier, et al. “JWST NIRCam Observations of SN 1987A: Spitzer Comparison and Spectral Decomposition.” The Astrophysical Journal 959, no. 2 (December 2023): 95. https://doi.org/10.3847/1538-4357/acfd95. | |
| dc.identifier.uri | https://doi.org/10.3847/1538-4357/acfd95 | |
| dc.identifier.uri | http://hdl.handle.net/11603/30147 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | AAS | |
| dc.relation.isAvailableAt | The University of Maryland, Baltimore County (UMBC) | |
| dc.relation.ispartof | UMBC Center for Space Sciences and Technology | |
| dc.relation.ispartof | UMBC Faculty Collection | |
| dc.rights | This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law. | en_US |
| dc.rights | Public Domain Mark 1.0 | * |
| dc.rights.uri | http://creativecommons.org/publicdomain/mark/1.0/ | * |
| dc.title | JWST NIRCam Observations of SN 1987A: Spitzer Comparison and Spectral Decomposition | en_US |
| dc.type | Text | en_US |
| dcterms.creator | https://orcid.org/0000-0001-8403-8548 | en_US |