Measuring the expansion and age of the nova shell IPHASX J210204.7 + 471015

DOI: 
10.1093/mnras/sty3364
Publication date: 
01/03/2019
Main author: 
Santamaría, E.
IAA authors: 
Guerrero, M. A.
Authors: 
Santamaría, E.;Guerrero, M. A.;Ramos-Larios, G.;Sabin, L.;Vázquez, R.;Gómez-Muñoz, M. A.;Toalá, J. A.
Journal: 
Monthly Notices of the Royal Astronomical Society
Refereed: 
Yes
Publication type: 
Article
Volume: 
483
Pages: 
3773-3780
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 IPHASX J210204.7 + 471015 around a nova-like system have been used to derive a present-day expansion rate of 0{^''<SUB>.</SUB>}100 yr<SUP>-1</SUP> and an expansion velocity of 285 km s<SUP>-1</SUP>. 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.
Database: 
ADS
SCOPUS
URL: 
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85071165534&doi=10.1093%2fmnras%2fsty3364&partnerID=40&md5=0f320b1b6bddc29effd5b5b6d42d334b
ADS Bibcode: 
2019MNRAS.483.3773S
Keywords: 
techniques: image processing;techniques: imaging spectroscopy;stars: individual: novae;novae;cataclysmic variables;ISM: kinematics and dynamics;Astrophysics - Solar and Stellar Astrophysics