The maximum mass of neutron stars (NSs) is great importance for constraining equations state NSs and understanding the gap between stellar-mass black holes. in X-ray binaries would increase by accreting material from their companions (known as recycling process), uncertainties accretion process give challenge to study NS at birth. {In this work, we investigate accreted with considering effect s...

A neutron star in a long-lived, low-mass binary can easily accrete enough matter to replace its entire crust. Previous authors noted that an accreted crust, being formed from the burning of accreted hydrogen and helium, allows a series of non-equilibrium reactions, at densities & 6 × 10 g cm−3, which release a substantial amount of heat (∼ 1MeV per accreted nucleon). Recent calculations by Scha...

Existing determinations show that n(C)/n(Fe) is more than a factor of 10 below solar in the atmospheres of three white dwarfs that appear to be externallypolluted. These results are not easily explained if the stars have accreted interstellar matter, and we re-interpret these measurements as evidence that these stars have accreted asteroids with a chondritic composition. Subject headings: plane...

We show that, in order to determine the equation of state inner crust an accreting neutron star, one should minimize not Gibbs free energy, as it is generally assumed literature, but a different thermodynamic potential $\mathrm{\ensuremath{\Psi}}$, which tends minimum at fixed pressure and chemical potential. Once this specified, can calculate heat-release distribution stellar due nonequilibriu...

We propose that accretion can induce a neutron star magnetic field decay because the ferromagnetic accreted matter screens the magnetic field of neutron star. Our model results suggest that: (i) the surface magnetic field decay is inversely correlated with the accretion mass in the X-ray binary accretion phase as∆M−0.4, (ii) the ‘Bottom Field Strength ’ of about 108 G can occur when the accrete...

A simple formulation for the growth of a wedge of constant taper accreting a sediment layer of given thickness and exponential decrease of porosity with depth was used to estimate the rates of growth of the accretionary wedges off Vancouver Island and Oregon. Application to the section off Vancouver Island indicates that the accreted sediments penetrated at Site 889 were added to the toe of the...

We introduce a set of stellar models for massive stars whose evolution has been affected by mass transfer in a binary system, at a range of metallicities. As noted by other authors, the effect of such mass transfer is frequently more than just rejuvenation. We find that, whilst stars with convective cores which have accreted only H-rich matter rejuvenate as expected, those stars which have accr...

We present the results of fully 3-D hydrodynamic simulations of the gravitational collapse of isolated, turbulent molecular cloud cores. Starting from initial states of hydrostatic equilibrium, we follow the collapse of both singular and nonsingular logatropic cores until the central protostar has accreted > 90% of the total available mass. We find that, in the collapse of a singular core with ...