Nicolaus Copernicus Astronomical Center: Marek J. Sarna: Cooling

Cooling tracks for white dwarfs

with helium core

The binary stars at the beginning of mass transfer consist from 1.4 Msun neutron star and 1.5 Msun red giant with small helium core (Mcore < 0.05 Msun). In tables bellow we show cooling tracks for different white dwarfs masses. The metalicity is Z=0.003 where Zcno= 0.00154.

Pi=0.70d; Pf=1.591d; Mf=0.191Msun
Pi=0.80d; Pf=2.092d; Mf=0.199Msun
Pi=0.90d; Pf=2.450d; Mf=0.204Msun
Pi=1.20d; Pf=3.409d; Mf=0.212Msun
Pi=1.50d; Pf=4.280d; Mf=0.217Msun
Pi=1.80d; Pf=5.105d; Mf=221Msun
Pi=2.10d; Pf=5.866d; Mf=0.224Msun
Pi=2.50d; Pf=6.831d; Mf=.228Msun
Pi=3.00d; Pf=7.888d; Mf=.231Msun

sarna@camk.ed.pl

Milky Way : Courtesy of HST : 1997 Releases