Measuring the Expansion and Age of the Nova Shell IPHASXJ210204.7+471015

Abstract

The parallax expansion and kinematics of a nova shell can be used to assess its age and distance, and to investigate the interaction of the ejecta with the circumstellar medium. These are key to understand the expansion and dispersal of the nova ejecta in the Galaxy. Multi-epoch images and high-dispersion spectroscopic observations of the recently discovered classical nova shell IPHASXJ210204.7+471015 around a nova-like system have been used to derive a present day expansion rate of 0.100 arcsec/yr and an expansion velocity of 285 km/s. These data are combined to obtain a distance of 600 pc to the nova. The secular expansion of the nova shell place the event sometime between 1850 and 1890, yet it seems to have been missed at that time. Despite its young age, 130-170 yrs, we found indications that the ejecta has already experienced a noticeable deceleration, indicating the interaction of this young nova shell with the surrounding medium.

arXiv comment8 pages, 5 figures, Accepted for publication in MNRAS

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Cited by in corpus (7)

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• Rings and arcs around evolved stars. II. The Carbon Star AFGL 3068 and the Planetary Nebulae NGC 6543, NGC 7009 and NGC 7027
• Precise Measures of Orbital Period, Before and After Nova Eruption for QZ Aurigae
• Bow-shocks, nova shells, disc winds and tilted discs: The Nova-Like V341 Ara Has It All
• Discovery of a Fast Expanding Shell in the Inside-out Born-Again Planetary Nebula HuBi 1 Through High-Dispersion Integral Field Spectroscopy
• On the Observability of Recurrent Nova Super-Remnants
• X-ray observations of the nova shell IPHASX J210204.7+471015