A holistic approach to carbon-enhanced metal-poor stars

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Volume 509 (January 2010)

A&A, 509 (2010) A93

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Table 5:

Summary of the properties of CEMP stars.
	CEMP-no	CEMP-low-s	CEMP-s	CEMP-rs	Comment
C	medium, $\nearrow$ with Fe	medium	high	high	from AGB or low-Fe SNII
$\rm ^{12}C/^{13}C$	low to high	low to high	low to high	low to high	signature of CN cycling
N	high	high	high	high	not from HBB, from cool bottom processing, rotation...?
O	high in most	std	std	high in some	SNII or high temperature pulses ?
Mg	high	high in some	std	high in some	$^{22}{\rm Ne}(\alpha,n)^{25}{\rm Mg}$ or $^{20}{\rm Ne}(\alpha,\gamma)^{24}$ Mg ?
Ba	low	low	high	very high	correlated with C for CEMP-s and low-s
La	low	low	high	very high	from $^{13}{\rm C}(\alpha,n)^{16}$ O in CEMP-s and $^{22}{\rm Ne}(\alpha,n)^{25}$ Mg in CEMP-rs
Ce	low	low	high	high and cst	''''
Eu	not measurable	low	medium	high	''''
Pb	not measured	low	medium	high	''''

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