Table 4: Helium core masses and core abundances for model stars with masses between 1.0 and 5.0 $M_\odot$ . The second column gives the range of helium core masses (in $M_\odot$ ) that are obtained between the formation of the core and core helium ignition. The third and fourth column give the Ne/O abundance of the core, relative to the initial (ISM) Ne/O abundance, for the helium core (RGB) and carbon-oxygen core (AGB) respectively.
M $M_{\rm He-core}$ (Ne/O) $_{\rm c}$ /(Ne/O) $_{\rm in}$

RGB AGB

1.00 0.00-0.47 2.25 0.14

1.50 0.15-0.47 5.97 0.15

2.00 0.23-0.39 9.03 0.14

2.25 0.30-0.34 10.2 0.13

2.50 0.34-0.36 11.3 0.13

3.00 0.38-0.42 12.9 0.14

4.00 0.63-0.64 16.3 0.15

5.00 0.85-0.85 19.0 0.16

**Table 4:** Helium core masses and core abundances for model stars with masses between 1.0 and 5.0 $M_\odot$ . The second column gives the range of helium core masses (in $M_\odot$ ) that are obtained between the formation of the core and core helium ignition. The third and fourth column give the Ne/O abundance of the core, relative to the initial (ISM) Ne/O abundance, for the helium core (RGB) and carbon-oxygen core (AGB) respectively.
M	$M_{\rm He-core}$	(Ne/O) $_{\rm c}$ /(Ne/O) $_{\rm in}$
		RGB	AGB
1.00	0.00-0.47	2.25	0.14
1.50	0.15-0.47	5.97	0.15
2.00	0.23-0.39	9.03	0.14
2.25	0.30-0.34	10.2	0.13
2.50	0.34-0.36	11.3	0.13
3.00	0.38-0.42	12.9	0.14
4.00	0.63-0.64	16.3	0.15
5.00	0.85-0.85	19.0	0.16

Source LaTeX | All tables | In the text

	1 Introduction
	2 Synopsis of X-ray bursts from 2S 0918-549
	3 Analysis of the long burst
	4 Flux history of persistent emission
	5 Discussion
	6 Conclusion
	References