Infrared observations of the recurrent nova T Pyxidis: ancient dust basks in the warm glow of the 2011 outburst
journal contributionposted on 24.10.2012, 08:57 by A. Evans, R. D. Gehrz, L. A. Helton, S. Starrfield, M. F. Bode, J. P. Osborne, D. P. K. Banerjee, J-U. Ness, F. M. Walter, C. E. Woodward, E. Kuulkers, S. P. S. Eyres, J. M. Oliveira, NM Ashok, J Krautter, TJ O'Brien, K. L. Page, M. T. Rushton
We present Spitzer Space Telescope and Herschel Space Observatory infrared observations of the recurrent nova T Pyx during its 2011 eruption, complemented by ground-base optical-infrared photometry. We find that the eruption has heated dust in the pre-existing nebulosity associated with T Pyx. This is most likely interstellar dust swept up by T Pyx — either during previous eruptions or by a wind — rather than the accumulation of dust produced during eruptions.