TY - GEN
T1 - Wave-driven mass loss
T2 - A mechanism for late-stage stellar eruptions
AU - Shiode, Josh
AU - Quataert, Eliot
N1 - Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2011/4
Y1 - 2011/4
N2 - During the late stages of stellar evolution in massive stars (carbon fusion and later), the fusion and neutrino luminosities in the core of the star exceed the Eddington luminosity. This can drive vigorous convective motions which in turn excite a super-Eddington flux in internal gravity waves. We show that an interesting fraction of the energy in excited gravity waves can, in some cases, convert into sound waves as the gravity waves propagate (tunnel) towards the stellar surface. The subsequent dissipation of the sound waves can unbind up to several M · of the stellar envelope. This wave-driven mass loss can explain the existence of extremely large stellar mass loss rates just prior to core-collapse, which are inferred via circumstellar interaction in some core-collapse supernovae (e.g., SNe 2006gy and PTF 09uj).
AB - During the late stages of stellar evolution in massive stars (carbon fusion and later), the fusion and neutrino luminosities in the core of the star exceed the Eddington luminosity. This can drive vigorous convective motions which in turn excite a super-Eddington flux in internal gravity waves. We show that an interesting fraction of the energy in excited gravity waves can, in some cases, convert into sound waves as the gravity waves propagate (tunnel) towards the stellar surface. The subsequent dissipation of the sound waves can unbind up to several M · of the stellar envelope. This wave-driven mass loss can explain the existence of extremely large stellar mass loss rates just prior to core-collapse, which are inferred via circumstellar interaction in some core-collapse supernovae (e.g., SNe 2006gy and PTF 09uj).
KW - outflows; supernovae: general
KW - stars: mass loss
KW - winds
UR - http://www.scopus.com/inward/record.url?scp=84866247979&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84866247979&partnerID=8YFLogxK
U2 - 10.1017/S174392131201349X
DO - 10.1017/S174392131201349X
M3 - Conference contribution
AN - SCOPUS:84866247979
SN - 9781107019799
T3 - Proceedings of the International Astronomical Union
SP - 391
EP - 392
BT - Death of Massive Stars
A2 - San Antonio, Peter W. A.
A2 - Kawai, Nobuyuki
A2 - Pian, Elena
ER -