Bibcode
Santamaría, E.; Guerrero, M. A.; Ramos-Larios, G.; Sabin, L.; Vázquez, R.; Gómez-Muñoz, M. A.; Toalá, J. A.
Bibliographical reference
Monthly Notices of the Royal Astronomical Society, Volume 483, Issue 3, p.3773-3780
Advertised on:
3
2019
Citations
11
Refereed citations
10
Description
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 IPHASX J210204.7 + 471015 around a
nova-like system have been used to derive a present-day expansion rate
of 0{^''.}100 yr-1 and an expansion velocity of
285 km s-1. 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 yr, we found indications
that the ejecta has already experienced a noticeable deceleration,
indicating the interaction of this young nova shell with the surrounding
medium.
Related projects
Nucleosynthesis and molecular processes in the late stages of Stellar Evolution
Low- to intermediate-mass (M < 8 solar masses, Ms) stars represent the majority of stars in the Cosmos. They finish their lives on the Asymptotic Giant Branch (AGB) - just before they form planetary nebulae (PNe) - where they experience complex nucleosynthetic and molecular processes. AGB stars are important contributors to the enrichment of the
Domingo Aníbal
García Hernández