No first ionization potential fractionation in the active stars AR Piscium and AY Ceti

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Volume 505 / No 1 (October I 2009)

A&A, 505 1 (2009) 299-306

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Table 3:

Chandra/LETG line fluxes of AY Cet^a.
Ion	$\lambda_{{\rm model}}$	log $T_{{\rm max}}$	$F_{{\rm obs}}$	S/N	Ratio	Blends
S XV	5.1015	7.2	9.72e-14	3.3	-0.08	S XV 5.0387
Si XIV	6.1804	7.2	5.86e-14	5.4	0.18	Si XIV 6.1858
Si XIII	6.6479	7.0	1.11e-13	7.9	-0.06	Si XIII 6.6882, 6.7403
Mg XII	7.1058	7.0	4.21e-14	4.9	0.14	Mg XII 7.1069, Al XIII 7.1710
Mg XI	7.8503	6.8	4.20e-14	4.9	0.28	Al XII 7.8721
Mg XII	8.4192	7.0	9.72e-14	7.8	-0.26	Mg XII 8.4246
Mg XI	9.1687	6.8	1.08e-13	7.9	-0.07
Mg XI	9.3143	6.8	7.06e-14	6.4	-0.03	Mg XI 9.2312, Ni XIX 9.2540
Fe XX	9.9977	7.0	2.48e-14	3.8	-0.04	Ni XIX 9.9770, Fe XXI 9.9887, Fe XX 10.0004, 10.0054
Ne X	10.2385	6.8	4.17e-14	4.9	-0.11	Ne X 10.2396
Fe XIX	10.6414	6.9	3.10e-14	4.2	-0.09	Fe XVIII 10.5364, Fe XXIV 10.6190, 10.6630, Fe XIX 10.6295, 10.6491, 10.6840, Fe XVII 10.6570
Fe XIX	10.8160	6.9	2.07e-14	3.5	0.18	Fe XVII 10.7700
Fe XXIII	10.9810	7.2	3.16e-14	4.3	-0.01	Ne IX 11.0010, Fe XXIII 11.0190, Fe XVII 11.0260, Fe XXIV 11.0290
Fe XXIV	11.1760	7.3	7.50e-14	6.8	0.28	Fe XVII 11.1310, Ni XXII 11.1818, 11.1950, 11.2118
Fe XVIII	11.3260	6.9	3.83e-14	4.9	0.11	Fe XVII 11.2540, Ni XXI 11.3180
Fe XVIII	11.4230	6.9	2.61e-14	4.1	0.07	Fe XXII 11.4270, Fe XXIV 11.4320, Fe XVIII 11.4494
Fe XVIII	11.5270	6.9	4.42e-14	5.4	0.05	Fe XXII 11.4900, Ni XIX 11.5390, Ni XXI 11.5390, Ne IX 11.5440
Fe XXII	11.7700	7.1	9.48e-14	7.9	0.02	Fe XXIII 11.7360, Ni XX 11.8320, 11.8460
Fe XXII	11.9770	7.1	8.26e-14	7.5	0.36	Fe XXII 11.8810, 11.9320, Ni XX 11.9617, Fe XXI 11.9750, 12.0440
Ne X	12.1321	6.8	3.17e-13	14.7	-0.06	Fe XVII 12.1240, Ne X 12.1375
Fe XXI	12.2840	7.0	1.57e-13	10.4	0.16	Fe XXII 12.2100, Fe XVII 12.2660
Fe XXI	12.3930	7.0	1.05e-13	8.5	0.02	Fe XXI 12.4220, Ni XIX 12.4350
Fe XX	12.5260	7.0	4.46e-14	5.6	0.16	Fe XXI 12.4990, 12.5698, Fe XX 12.5760, 12.5760
Ni XIX	12.6560	6.9	2.36e-14	4.1	0.00	Fe XXI 12.6490
Fe XXII	12.7540	7.1	2.34e-14	4.1	0.24	Fe XVII 12.6950
Fe XX	12.8240	7.0	1.66e-13	10.9	0.03	Fe XXI 12.8220, Fe XX 12.8460, 12.8640
Fe XX	12.9650	7.0	8.63e-14	7.9	0.12	Fe XX 12.9120, 12.9920, Ni XX 12.9270, Fe XIX 12.9330, Fe XXII 12.9530
Fe XX	13.0610	7.0	4.47e-14	5.7	0.06	Fe XIX 13.0220, Fe XX 13.0240, 13.1000, Fe XXI 13.0444, 13.0831
Fe XX	13.2740	7.0	3.13e-14	4.9	-0.01	Fe XXII 13.2360, Fe XXI 13.2487, Ni XX 13.2560, Fe XIX 13.2658, Fe XX 13.2909
Fe XX	13.3850	7.0	3.90e-14	5.5	-0.01	Fe XX 13.3089, 13.3470, Ni XX 13.3090, Fe XVIII 13.3230, 13.3550, 13.3948
Ne IX	13.4473	6.6	2.61e-13	14.2	0.05	Fe XIX 13.4620, 13.4970, 13.5180, Fe XXI 13.5070
Fe XIX	13.6450	6.9	2.31e-14	4.3	0.24	Fe XX 13.6124, 13.6150, Fe XIX 13.6481
Ne IX	13.6990	6.6	5.98e-14	6.9	0.18	Fe XIX 13.6742, 13.6752, 13.6828
Fe XIX	13.7950	6.9	7.46e-14	7.7	-0.06	Fe XIX 13.7315, 13.7458, Fe XX 13.7670, Ni XIX 13.7790
Fe XVII	13.8250	6.8	3.24e-14	5.1	0.05	Fe XIX 13.8390, Fe XX 13.8430, Fe XVII 13.8920
Fe XXI	14.0080	7.0	7.22e-14	7.6	-0.17	Ni XIX 14.0430, 14.0770
Fe XVIII	14.2080	6.9	1.06e-13	9.3	-0.13	Fe XVIII 14.2560, Fe XX 14.2670
Fe XVIII	14.3730	6.9	8.38e-14	8.4	0.06	Fe XX 14.3318, 14.4207, 14.4600 Fe XVIII 14.3430, 14.4250, 14.4392
Fe XVIII	14.5340	6.9	5.83e-14	7.0	0.14	Fe XVIII 14.4856, 14.5056, 14.5710, 14.6011
Fe XIX	14.6640	6.9	2.94e-14	5.0	0.22	Fe XVIII 14.6160, 14.6884
Fe XIX	14.7250	6.9	1.34e-14	3.4	-0.24	Fe XVIII 14.7260, 14.7820, Fe XX 14.7540
O VIII	14.8205	6.5	6.04e-14	7.3	0.34	O VIII 14.8207, Fe XX 14.8276, 14.8526, 14.8651, 14.8785, 14.9196, Fe XIX 14.9170, Fe XVIII 14.9241
Fe XVII	15.0140	6.7	2.04e-13	13.5	-0.01	Fe XIX 15.0790
Fe XVII	15.2610	6.7	5.70e-14	7.2	-0.16	O VIII 15.1760, 15.1765, Fe XIX 15.1980
Fe XVII	15.4530	6.7	1.93e-14	4.2	0.19	Fe XIX 15.4136, Fe XVIII 15.4940, 15.5199, Fe XX 15.5170
Fe XVIII	15.6250	6.8	1.67e-14	3.9	-0.15
Fe XVIII	15.8240	6.8	3.78e-14	6.0	0.24	Fe XVIII 15.8700
Fe XVIII	16.0710	6.8	1.50e-13	12.0	0.06	Fe XVIII 16.0040, O VIII 16.0055, 16.0067, Fe XIX 16.1100
Fe XVIII	16.1590	6.8	1.66e-14	4.1	-0.08	Fe XVII 16.2285, Fe XIX 16.2830
Fe XVII	16.7800	6.7	6.92e-14	8.3	-0.03
Fe XVII	17.0510	6.7	1.82e-13	12.5	0.11	Fe XVII 17.0960
O VIII	18.9671	6.5	2.13e-13	14.6	-0.09	O VIII 18.9725
S XIV	24.2850	6.5	1.68e-14	3.7	0.40	S XIV 24.2000, 24.2890
N VII	24.7792	6.3	5.34e-14	6.6	0.00	N VII 24.7846
C VI	28.4652	6.2	2.11e-14	4.3	0.00	C VI 28.4663
S XIV	30.4270	6.5	1.66e-14	3.5	-0.32	S XIV 30.4690
No id.	36.3980		4.30e-14	6.0	...	(Ne X 12.132, 3 ${\rm rd}$ order)
Si XII	44.1650	6.3	9.40e-15	4.5	-0.12	Si XII 44.0190, 44.1780
Fe XVII	50.6861	6.8	3.99e-15	3.7	0.32	Fe XVI 50.5550, Fe XVII 50.8544
No id.	56.9000		1.07e-14	4.1	...	(O VIII 18.97, 3 ${\rm rd}$ order)
Fe XVIII	93.9230	6.8	2.87e-14	8.6	-0.29	Fe XX 93.7800
Fe XIX	101.5500	6.9	1.30e-14	3.7	-0.21
Fe XXI	102.2200	7.0	1.01e-14	3.3	-0.43
Fe XIX	108.3700	6.9	3.99e-14	6.4	-0.15
Fe XXII	117.1700	7.1	1.92e-14	4.4	-0.54
Fe XXI	128.7300	7.0	4.25e-14	4.9	-0.31
Fe XX	132.8500	7.0	7.64e-14	6.6	-0.38	Fe XXIII 132.8500
Fe XXII	135.7800	7.1	5.89e-14	5.8	0.14

^a Line fluxes (in erg cm^-2 s^-1) measured in Chandra/LETG AY Cet summed spectra, and corrected by the ISM absorption. log $T_{{\rm max}}$ indicates the maximum temperature (K) of formation of the line (unweighted by the EMD). ``Ratio'' is the log ( $F_{{\rm obs}}$ / $F_{{\rm pred}}$ ) of the line. Blends amounting to more than 5% of the total flux for each line are indicated. For some lines not identified in APED, a tentative identification as 3 ${\rm rd}$ order emission of intense lines is suggested in the ``Blends'' column.

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