I. J. Danziger
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View article: Final Spitzer IRAC Observations of the Rise and Fall of SN 1987A
Final Spitzer IRAC Observations of the Rise and Fall of SN 1987A Open
Spitzer's final Infrared Array Camera observations of SN 1987A show the 3.6 and 4.5 μm emission from the equatorial ring (ER) continues a period of steady decline. Deconvolution of the images reveals that the emission is dominated by the r…
View article: Infrared Continuum and Line Evolution of the Equatorial Ring around SN 1987A
Infrared Continuum and Line Evolution of the Equatorial Ring around SN 1987A Open
Spitzer observations of SN 1987A have now spanned more than a decade. Since day ∼4000, mid-infrared (mid-IR) emission has been dominated by that from shock-heated dust in the equatorial ring (ER). From 6000 to 8000 days after the explosion…
View article: INFRARED CONTINUUM AND LINE EVOLUTION OF THE EQUATORIAL RING AROUND SN 1987A
INFRARED CONTINUUM AND LINE EVOLUTION OF THE EQUATORIAL RING AROUND SN 1987A Open
Spitzer observations of SN 1987A have now spanned more than a decade. Since day ∼4000, mid-infrared (mid-IR) emission has been dominated by that from shock-heated dust in the equatorial ring (ER). From 6000 to 8000 days after the explosion…
View article: The Birth Place of the Type Ic Supernova 2007Gr
The Birth Place of the Type Ic Supernova 2007Gr Open
We report our attempts to locate the progenitor of the peculiar Type Ic SN 2007gr in Hubble Space Telescope (HST) preexplosion images of the host galaxy, NGC 1058. Aligning adaptive optics Altair/NIRI imaging of SN 2007gr from the Gemini (…