Open AccessExplosive disruption of polytropes: a one‐dimensional hydrodynamic calculation
Author(s) -
Wyman Mark C.,
Chernoff David F.,
Wasserman Ira
Publication year - 2004
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1111/j.1365-2966.2004.08267.x
Subject(s) - polytropic process , physics , explosive material , polytrope , phenomenology (philosophy) , astrophysics , equation of state , mechanics , thermodynamics , philosophy , chemistry , organic chemistry , epistemology
We study explosions of stellar models using a one‐dimensional Lagrangian hydrodynamics code. We calculate how much mass is liberated as a function of the energy of explosion for a variety of pre‐explosion polytropic structures and for equations of state with a range of radiation‐to‐gas pressure ratios. The results show that simple assumptions about the amount of mass lost in an explosion can be quite inaccurate, and that even one‐dimensional stellar models exhibit a rich phenomenology. The mass loss fraction rises from about 50 to 100 per cent as a function of the explosion energy in an approximately discontinuous manner. Combining our results with those of other, more realistic models, we suggest that Nova Scorpii (J1655 − 40) may have experienced significant mass fallback because the explosion energy was less than the critical value. We infer that the original progenitor was less than twice the mass of today's remnant.