Program: GS-2011B-C-4

Title:Mid-Infrared Late Epoch Observation of Dust Forming Novae
PI:Itsuki Sakon
Co-I(s):

Abstract

In this proposal, we plan to carry out the late epoch (~1600 days after the outburst) mid-infrared observation of dust forming nova V1280Sco as a consecutive program to our previously approved program (program ID: GS-1010B-C-7) in the S10B semester. We have collected the uniform mid-infrared imaging and spectroscopic datasets of V1280Sco at two epochs of 150 days and 1270 days from the outburst with Subaru/COMICS and Gemini-South/TReCS, respectively. The proposed observation here enable us to investigate the infrared spectral evolution of remarkablly interesting dust-forming nova, V1280 Sco, in almost the longest timescale (~1600days) ever known in the mid-infrared, aiming to (1) obtain a correct understanding of the composition and the mass of dust formed during the nova outburst, (2) make an observational verification of the dust-condensation theory and (3) investigate the annealing process of amorphous dust in a harsh UV radiation fields. The results may lead us to improve our knowledge on the dust nucleation and its chemical evolution in circumstellar environment and, thus, to correctly evaluate the amount of interstellar dust of stellar origin from the observational point of view.

Publications using this program's data