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Geometry of nova ejecta

Published online by Cambridge University Press:  09 October 2020

M. Pavana Open the ORCID record for M. Pavana [Opens in a new window] ,
G. C. Anupama ,
Ramya M. Anche ,
U. S. Kamath  and
G. Selva Kumar
M. Pavana
Affiliation:
Indian Institute of Astrophysics, Koramangala block II, 560034 Bangalore, India Pondicherry University, R. V. Nagar, Kalapet, 605014 Puducherry, India email: pavana@iiap.res.in, murali.pavana@gmail.com
G. C. Anupama
Affiliation:
Indian Institute of Astrophysics, Koramangala block II, 560034 Bangalore, India
Ramya M. Anche
Affiliation:
Indian Institute of Astrophysics, Koramangala block II, 560034 Bangalore, India
U. S. Kamath
Affiliation:
Indian Institute of Astrophysics, Koramangala block II, 560034 Bangalore, India
G. Selva Kumar
Affiliation:
Indian Institute of Astrophysics, Koramangala block II, 560034 Bangalore, India
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Abstract

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We present photo-ionization and morpho-kinematic analyses of the ejecta of novae. The sample consists of ten novae belonging to the Fe II, He/N and hybrid classes. The Fe II class of novae in the sample have bipolar cone-like structures, with or without equatorial rings with inclination angle in the range of 40°–60°. The He/N novae have bullet-nose curve along with bipolar cone-like structures and equatorial rings with an inclination angle of ~80°. The hybrid nova in the sample is a bipolar frustum of prolate spheroid along with bipolar cone-like structures and equatorial rings with an inclination angle of 63°.

Keywords

novae, cataclysmic variablesstars : individualtechniques : spectroscopic

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