Spitzer observations of old novae

Details Spitzer observations of old novae Spitzer observations of old novae

Jun 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005sptz.prop20262e&link_type=abstract

Spitzer Proposal ID #20262

Physics

Scientific paper

Our perception of old classical novae is determined by (i) the physical state of the stellar remnant as it heats up during the eruption, (ii) the distribution of the material ejected in the eruption, (iii) the eventual 'switching off' of the eruption. We propose to use Spitzer to obtain IRS stare spectra of several old novae (including 4 novae observed as targets-of-opportunity in Cy1) and MIPS photometry of old dusty novae, and of a unique nova with cold (possibly pre-eruption) dust. Our targets cover a range of nova parameter space (1-100 years since eruption, 'fast' and 'slow' novae, 'coronal' novae and dusty novae). Our objectives are to determine (i) element abundances in, and masses of, ejected material in the most recent eruptions, (ii) the physical state (density, temperature, clumpiness) of the ejected material, (iii) the long-term evolution of the dust in dusty novae, (iv) the physical state of the stellar remnant. Our goals are to investigate the long-term (10-100 years) evolution of classical novae and their environments, to gain an infrared perspective on the eruption 'turn-off' time, and to investigate the contribution that novae make to the chemical evolution of the Galaxy.

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