A Snapshot Survey of Nova Shells

Details A Snapshot Survey of Nova Shells A Snapshot Survey of Nova Shells

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997hst..prop.7386r&link_type=abstract

HST Proposal ID #7386

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Hst Proposal Id #7386 Stellar Ejecta

Scientific paper

We propose to carry out a Snapshot survey of recent novae, to detect and measure their expanding gaseous shells. The survey will obtain narrow-band images in the light of HAlpha and other strong emission lines of 43 recent Galactic novae. This should more than double the number of known resolved nova shells, and provide insight into the hydrodynamics of common envelope evolution, by correlating the degree of the shells' ellipticities with the decay times of the novae. It will trace the distribution of hot and cool gas in the nova shells, and show their degree of inhomogeneity on both large and small scales. It will also help to find the distances to the novae, useful in modeling their accretion disks, and in providing an independent check of the extragalactic distance scale.

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