J/ApJ/890/2ivo://CDS.VizieR/J/ApJ/890/2doi:10.26093/cds/vizier.18900002CDSArendt R.G.Dwek E.Bouchet P.Danziger I.J.Gehrz R.D.Park S.,Woodward C.E.2022-01-17T12:19:48Z2021-08-13T13:53:01ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frinfrared-photometrysupernovaeSpitzer's final Infrared Array Camera observations of SN 1987A show the 3.6 and 4.5{mu}m emission from the equatorial ring (ER) continues a period of steady decline. Deconvolution of the images reveals that the emission is dominated by the ring, not the ejecta, and is brightest on the west side. Decomposition of the marginally resolved emission also confirms this, and shows that the west side of the ER has been brightening relative to the other portions of the ER. The infrared morphological changes resemble those seen in both the soft X-ray emission and the optical emission. The integrated ER light curves at 3.6 and 4.5{mu}m are more similar to the optical light curves than the soft X-ray light curve, though differences would be expected if dust is responsible for this emission and its destruction is rapid. Future observations with the James Webb Space Telescope will continue to monitor the ER evolution, and will reveal the true spectrum and nature of the material responsible for the broadband emission at 3.6 and 4.5{mu}m. The present observations also serendipitously reveal a nearby variable source, subsequently identified as a Be star, that has gone through a multiyear outburst during the course of these observations.2020ApJ...890....2Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/890/2CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/sn : Asiago Supernova Catalogue (Barbon et al., 1999-)II/225 : Catalog of Infrared Observations, Edition 5 (Gezari+ 1999)II/351 : VISTA Magellanic Survey (VMC) catalog (Cioni+, 2011)II/342 : Hubble Source Catalog (V1 and V2) (Whitmore+, 2016)I/345 : Gaia DR2 (Gaia Collaboration, 2018)J/ApJS/99/223 : IUE UV Observations of SN 1987A (Pun+ 1995)J/ApJS/152/251 : Indo-US library of coude feed stellar spectra (Valdes+, 2004)J/AJ/132/2268 : SAGE calibration stars (Meixner+, 2006)J/AJ/138/1003 : IR photometry of massive LMC stars (Bonanos+, 2009)J/A+A/541/L1 : SN 1987A images at 350 and 870um (Lakicevic+, 2012)J/A+A/541/L2 : SN 1987A 3mm image (Lakicevic+, 2012)J/MNRAS/445/2440 : SN with associated Planck CMB temperatures (Yershov+, 2014)J/AJ/151/146 : IRS spectra with features of silicates (Chen+, 2016)J/AJ/153/252 : Phot. variability of BeSS-KELT stars (Labadie-Bartz+, 2017)J/MNRAS/470/3250 : SAGE LMC point-sources classification (Jones+, 2017)J/A+A/624/A116 : Constraints on the progenitor of SN 1987A (Utrobin+, 2019)J/A+A/630/A92 : The Hubble Catalog of Variables (Bonanos+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/890/2https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/890/2http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/890/2https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/890/2https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/890/2http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/890/2GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tap6.772611666688002e-21 6.185923063528282e-20InfrareddefaultJ/ApJ/890/2/table1SN 1987A flux densitiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDay[6130/11886] Days since explosion (1)dtime.epochdoubleS3.6[0.58/1.3]? Spitzer/IRAC 3.6um flux density (2)mJyphot.mag;em.IR.3-4umdoublenullablee_S3.6[0.01/0.02]? Uncertainty in S3.6mJystat.errordoublenullableS4.5[0.9/2.3]? Spitzer/IRAC 4.5um flux density (2)mJyphot.mag;em.IR.4-8umdoublenullablee_S4.5[0.01/0.02]? Uncertainty in S4.5mJystat.errordoublenullableS5.8[1.46/3.92]? Spitzer/IRAC 5.8um flux density (2)mJyphot.flux.density;em.IR.4-8umdoublenullablee_S5.8[0.02/0.05]? Uncertainty in S5.8mJystat.errordoublenullableS8[4.6/13.6]? Spitzer/IRAC 8um flux density (2)mJyphot.flux.density;em.IR.8-15umdoublenullablee_S8[0.03/0.07]? Uncertainty in S8mJystat.errordoublenullableS24[26.3/75.7]? Spitzer/MIPS 24um flux density (2)mJyphot.flux.density;em.IR.15-30umdoublenullablee_S24[1.8/1.9]? Uncertainty in S24mJystat.errordoublenullableAOR[5030912/65861888] Spitzer AOR numbermeta.id;obslongPID[124/90117] Spitzer PID numbermeta.id;obsintf_PID[*] Flag on PID (3)meta.codechar