TY - JOUR
T1 - Accreting white dwarfs among the planetary nebulae most luminous in [O III] λ5007 emission
AU - Soker, Noam
N1 - Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 2006/4/1
Y1 - 2006/4/1
N2 - I propose that some of the most luminous planetary nebulae (PNs) are actually proto-PNs, where a companion white dwarf (WD) accretes mass at a relatively high rate from the post-asymptotic giant branch star that blew the nebula. The WD sustains a continuous nuclear burning and ionizes the nebula. The WD is luminous enough to make the dense nebula luminous in the [O III] λ5007 line. In young stellar populations these WD accreting systems account for a small fraction of [O III]-luminous PNs, but in old stellar populations these binaries might account for most, or even all, of the [O III]-luminous PNs. This might explain the puzzling constant cutoff (maximum) [O III] λ5007 luminosity of the planetary nebula luminosity function across different galaxy types.
AB - I propose that some of the most luminous planetary nebulae (PNs) are actually proto-PNs, where a companion white dwarf (WD) accretes mass at a relatively high rate from the post-asymptotic giant branch star that blew the nebula. The WD sustains a continuous nuclear burning and ionizes the nebula. The WD is luminous enough to make the dense nebula luminous in the [O III] λ5007 line. In young stellar populations these WD accreting systems account for a small fraction of [O III]-luminous PNs, but in old stellar populations these binaries might account for most, or even all, of the [O III]-luminous PNs. This might explain the puzzling constant cutoff (maximum) [O III] λ5007 luminosity of the planetary nebula luminosity function across different galaxy types.
KW - Binaries: close
KW - Planetary nebulae: general
KW - Stars: AGB and post-AGB
UR - http://www.scopus.com/inward/record.url?scp=33645823388&partnerID=8YFLogxK
U2 - 10.1086/500291
DO - 10.1086/500291
M3 - 文章
AN - SCOPUS:33645823388
VL - 640
SP - 966
EP - 970
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 2 I
ER -