| Issue |
A&A
Volume 367, Number 2, February IV 2001
|
|
|---|---|---|
| Page(s) | 582 - 587 | |
| Section | Interstellar and circumstellar matter | |
| DOI | https://doi.org/10.1051/0004-6361:20000428 | |
| Published online | 15 February 2001 | |
On the minimum and maximum mass of neutron stars and the delayed collapse
Sektion Physik, Ludwig-Maximilians Universität München, Am Coulombwall 1, 85748 Garching, Germany
Corresponding author: K. Strobel, Klaus.Strobel@physik.uni-muenchen.de
Received:
23
September
2000
Accepted:
28
November
2000
The minimum and maximum mass of protoneutron stars and neutron stars
are investigated. The hot dense matter is
described by relativistic (including hyperons) and non-relativistic
equations of state.
We show that the minimum mass (∼ 0.88-1.28 
)
of a neutron star is determined by the earliest stage of
its evolution and is nearly unaffected by the presence of hyperons.
The maximum mass of a neutron star is limited by the protoneutron star
or hot neutron star stage.
Further we find that the delayed collapse of a neutron star into a black hole
during deleptonization is not only possible for equations of state
with softening components, as for instance, hyperons, meson
condensates etc., but also for neutron stars with a pure
nucleonic-leptonic equation of state.
Key words: stars: evolution / stars: neutron / dense matter / equation of state
© ESO, 2001
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